diff --git a/backend/src/core/bitcoin-api/bitcoin-api.schema.ts b/backend/src/core/bitcoin-api/bitcoin-api.schema.ts
index c95c2ed1..cf1ad399 100644
--- a/backend/src/core/bitcoin-api/bitcoin-api.schema.ts
+++ b/backend/src/core/bitcoin-api/bitcoin-api.schema.ts
@@ -25,6 +25,7 @@ export const Block = z.object({
   difficulty: z.number(),
   extras: z
     .object({
+      reward: z.number(),
       totalFees: z.number(),
       avgFee: z.number(),
       avgFeeRate: z.number(),
diff --git a/backend/src/modules/bitcoin/address/address.dataloader.ts b/backend/src/modules/bitcoin/address/address.dataloader.ts
index 244120ed..5c9938e8 100644
--- a/backend/src/modules/bitcoin/address/address.dataloader.ts
+++ b/backend/src/modules/bitcoin/address/address.dataloader.ts
@@ -3,7 +3,7 @@ import { NestDataLoader } from '@applifting-io/nestjs-dataloader';
 import { Address } from 'src/core/bitcoin-api/bitcoin-api.schema';
 import { BitcoinApiService } from 'src/core/bitcoin-api/bitcoin-api.service';
 import { DataLoaderResponse } from 'src/common/type/dataloader';
-import { BitcoinTransaction } from '../transaction/transaction.model';
+import { BitcoinBaseTransaction, BitcoinTransaction } from '../transaction/transaction.model';
 
 @Injectable()
 export class BitcoinAddressLoader implements NestDataLoader<string, Address> {
@@ -29,7 +29,7 @@ export interface BitcoinAddressTransactionsLoaderProps {
 
 @Injectable()
 export class BitcoinAddressTransactionsLoader
-  implements NestDataLoader<BitcoinAddressTransactionsLoaderProps, BitcoinTransaction[]>
+  implements NestDataLoader<BitcoinAddressTransactionsLoaderProps, BitcoinBaseTransaction[]>
 {
   private logger = new Logger(BitcoinAddressTransactionsLoader.name);
 
diff --git a/backend/src/modules/bitcoin/address/address.module.ts b/backend/src/modules/bitcoin/address/address.module.ts
index d1d64b7c..c5a931a9 100644
--- a/backend/src/modules/bitcoin/address/address.module.ts
+++ b/backend/src/modules/bitcoin/address/address.module.ts
@@ -7,4 +7,4 @@ import { BitcoinAddressLoader, BitcoinAddressTransactionsLoader } from './addres
   imports: [BitcoinApiModule],
   providers: [BitcoinAddressResolver, BitcoinAddressLoader, BitcoinAddressTransactionsLoader],
 })
-export class AddressModule {}
+export class BitcoinAddressModule {}
diff --git a/backend/src/modules/bitcoin/address/address.resolver.ts b/backend/src/modules/bitcoin/address/address.resolver.ts
index 90694d20..5cb7dca0 100644
--- a/backend/src/modules/bitcoin/address/address.resolver.ts
+++ b/backend/src/modules/bitcoin/address/address.resolver.ts
@@ -1,7 +1,6 @@
 import DataLoader from 'dataloader';
 import { Loader } from '@applifting-io/nestjs-dataloader';
-import { Args, Float, Parent, ResolveField, Resolver } from '@nestjs/graphql';
-import { BitcoinApiService } from 'src/core/bitcoin-api/bitcoin-api.service';
+import { Args, Float, Parent, Query, ResolveField, Resolver } from '@nestjs/graphql';
 import { BitcoinBaseTransaction, BitcoinTransaction } from '../transaction/transaction.model';
 import { BitcoinAddress } from './address.model';
 import {
@@ -14,7 +13,13 @@ import {
 
 @Resolver(() => BitcoinAddress)
 export class BitcoinAddressResolver {
-  constructor(private bitcoinApiService: BitcoinApiService) {}
+  @Query(() => BitcoinAddress, { name: 'btcAddress', nullable: true })
+  public async getBtcAddress(
+    @Loader(BitcoinAddressLoader) addressLoader: DataLoader<string, BitcoinAddress>,
+    @Args('address') address: string,
+  ): Promise<BitcoinAddress> {
+    return await addressLoader.load(address);
+  }
 
   @ResolveField(() => Float)
   public async satoshi(
diff --git a/backend/src/modules/bitcoin/bitcoin.module.ts b/backend/src/modules/bitcoin/bitcoin.module.ts
index 1cd9345b..5ccb41fd 100644
--- a/backend/src/modules/bitcoin/bitcoin.module.ts
+++ b/backend/src/modules/bitcoin/bitcoin.module.ts
@@ -2,19 +2,19 @@ import { Module } from '@nestjs/common';
 import { BitcoinApiModule } from 'src/core/bitcoin-api/bitcoin-api.module';
 import { BitcoinTransactionModule } from './transaction/transaction.module';
 import { BitcoinResolver } from './bitcoin.resolver';
-import { BlockModule } from './block/block.module';
-import { AddressModule } from './address/address.module';
-import { InputModule } from './input/input.module';
-import { OutputModule } from './output/output.module';
+import { BitcoinBlockModule } from './block/block.module';
+import { BitcoinAddressModule } from './address/address.module';
+import { BitcoinInputModule } from './input/input.module';
+import { BitcoinOutputModule } from './output/output.module';
 
 @Module({
   imports: [
     BitcoinApiModule,
-    BlockModule,
+    BitcoinBlockModule,
     BitcoinTransactionModule,
-    AddressModule,
-    InputModule,
-    OutputModule,
+    BitcoinAddressModule,
+    BitcoinInputModule,
+    BitcoinOutputModule,
   ],
   providers: [BitcoinResolver],
 })
diff --git a/backend/src/modules/bitcoin/block/block.model.ts b/backend/src/modules/bitcoin/block/block.model.ts
index 3333d80a..f60e81a6 100644
--- a/backend/src/modules/bitcoin/block/block.model.ts
+++ b/backend/src/modules/bitcoin/block/block.model.ts
@@ -5,7 +5,7 @@ import { BitcoinAddress } from '../address/address.model';
 
 export type BitcoinBaseBlock = Omit<
   BitcoinBlock,
-  'miner' | 'totalFee' | 'feeRateRange' | 'transactions'
+  'miner' | 'reward' | 'totalFee' | 'feeRateRange' | 'transactions'
 >;
 
 @ObjectType({ description: 'Fee Rate Range' })
@@ -49,6 +49,9 @@ export class BitcoinBlock {
   @Field(() => BitcoinAddress)
   miner: BitcoinAddress;
 
+  @Field(() => Float)
+  reward: number;
+
   @Field(() => Float)
   totalFee: number;
 
diff --git a/backend/src/modules/bitcoin/block/block.module.ts b/backend/src/modules/bitcoin/block/block.module.ts
index 7074795b..ad2ea246 100644
--- a/backend/src/modules/bitcoin/block/block.module.ts
+++ b/backend/src/modules/bitcoin/block/block.module.ts
@@ -7,4 +7,4 @@ import { BitcoinBlockResolver } from './block.resolver';
   imports: [BitcoinApiModule],
   providers: [BitcoinBlockResolver, BitcoinBlockLoader, BitcoinBlockTransactionsLoader],
 })
-export class BlockModule {}
+export class BitcoinBlockModule {}
diff --git a/backend/src/modules/bitcoin/block/block.resolver.ts b/backend/src/modules/bitcoin/block/block.resolver.ts
index 7745f241..8c06b719 100644
--- a/backend/src/modules/bitcoin/block/block.resolver.ts
+++ b/backend/src/modules/bitcoin/block/block.resolver.ts
@@ -25,14 +25,33 @@ export class BitcoinBlockResolver {
   @ResolveField(() => BitcoinAddress)
   public async miner(
     @Parent() block: BitcoinBaseBlock,
-    @Loader(BitcoinBlockTransactionsLoader)
-    blockTxsLoader: DataLoader<string, BitcoinBlockTransactionsLoaderResponse>,
+    @Loader(BitcoinBlockLoader) blockLoader: DataLoader<string, BitcoinBlockLoaderResponse>,
   ): Promise<BitcoinBaseAddress> {
-    const txs = await blockTxsLoader.load(block.id);
-    const coinbaseTx = BitcoinTransaction.from(txs[0]);
-    return {
-      address: coinbaseTx.vout[0].scriptpubkeyAddress,
-    };
+    // XXX: only the "mempool" mode returns the "extra" field
+    const detail = await blockLoader.load(block.id);
+    if (detail.extras) {
+      return {
+        address: detail.extras.coinbaseAddress,
+      };
+    } else {
+      // TODO: what should be returned when using the "electrs" mode?
+      return null;
+    }
+  }
+
+  @ResolveField(() => Float)
+  public async reward(
+    @Parent() block: BitcoinBaseBlock,
+    @Loader(BitcoinBlockLoader) blockLoader: DataLoader<string, BitcoinBlockLoaderResponse>,
+  ): Promise<number> {
+    // XXX: only the "mempool" mode returns the "extra" field
+    const detail = await blockLoader.load(block.id);
+    if (detail.extras) {
+      return detail.extras.reward;
+    } else {
+      // TODO: what should be returned when using the "electrs" mode?
+      return 0;
+    }
   }
 
   @ResolveField(() => Float)
diff --git a/backend/src/modules/bitcoin/input/input.model.ts b/backend/src/modules/bitcoin/input/input.model.ts
index b827016f..3ae2dbea 100644
--- a/backend/src/modules/bitcoin/input/input.model.ts
+++ b/backend/src/modules/bitcoin/input/input.model.ts
@@ -1,6 +1,6 @@
 import { Field, Float, ObjectType } from '@nestjs/graphql';
 import * as BitcoinApi from 'src/core/bitcoin-api/bitcoin-api.schema';
-import { BitcoinOutput } from '../output/output.model';
+import { BitcoinBaseOutput, BitcoinOutput } from '../output/output.model';
 
 @ObjectType({ description: 'Bitcoin Input' })
 export class BitcoinInput {
@@ -11,7 +11,7 @@ export class BitcoinInput {
   vout: number;
 
   @Field(() => BitcoinOutput, { nullable: true })
-  prevout: BitcoinOutput;
+  prevout: BitcoinBaseOutput;
 
   @Field(() => String)
   scriptsig: string;
diff --git a/backend/src/modules/bitcoin/input/input.module.ts b/backend/src/modules/bitcoin/input/input.module.ts
index 7307a6a1..8b1f6f1d 100644
--- a/backend/src/modules/bitcoin/input/input.module.ts
+++ b/backend/src/modules/bitcoin/input/input.module.ts
@@ -4,4 +4,4 @@ import { BitcoinInputResolver } from './input.resolver';
 @Module({
   providers: [BitcoinInputResolver],
 })
-export class InputModule {}
+export class BitcoinInputModule {}
diff --git a/backend/src/modules/bitcoin/output/output.model.ts b/backend/src/modules/bitcoin/output/output.model.ts
index 1227ce56..c75e175c 100644
--- a/backend/src/modules/bitcoin/output/output.model.ts
+++ b/backend/src/modules/bitcoin/output/output.model.ts
@@ -2,6 +2,8 @@ import { Field, Float, ObjectType } from '@nestjs/graphql';
 import * as BitcoinApi from 'src/core/bitcoin-api/bitcoin-api.schema';
 import { BitcoinAddress, BitcoinBaseAddress } from '../address/address.model';
 
+export type BitcoinBaseOutput = Omit<BitcoinOutput, 'spent'>;
+
 @ObjectType({ description: 'Bitcoin Output' })
 export class BitcoinOutput {
   @Field(() => String)
@@ -22,7 +24,10 @@ export class BitcoinOutput {
   @Field(() => BitcoinAddress, { nullable: true })
   address: BitcoinBaseAddress;
 
-  public static from(output: BitcoinApi.Output) {
+  @Field(() => Boolean)
+  spent: boolean;
+
+  public static from(output: BitcoinApi.Output): BitcoinBaseOutput {
     return {
       scriptpubkey: output.scriptpubkey,
       scriptpubkeyAsm: output.scriptpubkey_asm,
diff --git a/backend/src/modules/bitcoin/output/output.module.ts b/backend/src/modules/bitcoin/output/output.module.ts
index c4664b10..36e713c0 100644
--- a/backend/src/modules/bitcoin/output/output.module.ts
+++ b/backend/src/modules/bitcoin/output/output.module.ts
@@ -4,4 +4,4 @@ import { BitcoinOutputResolver } from './output.resolver';
 @Module({
   providers: [BitcoinOutputResolver],
 })
-export class OutputModule {}
+export class BitcoinOutputModule {}
diff --git a/backend/src/modules/bitcoin/output/output.resolver.ts b/backend/src/modules/bitcoin/output/output.resolver.ts
index 37e4de78..a6612402 100644
--- a/backend/src/modules/bitcoin/output/output.resolver.ts
+++ b/backend/src/modules/bitcoin/output/output.resolver.ts
@@ -14,4 +14,10 @@ export class BitcoinOutputResolver {
       address: output.scriptpubkeyAddress,
     };
   }
+
+  @ResolveField(() => Boolean)
+  public async spent(@Parent() output: BitcoinOutput): Promise<boolean> {
+    // TODO: implement this resolver
+    return false;
+  }
 }
diff --git a/backend/src/modules/bitcoin/transaction/transaction.model.ts b/backend/src/modules/bitcoin/transaction/transaction.model.ts
index a0f35d9b..d791ae1b 100644
--- a/backend/src/modules/bitcoin/transaction/transaction.model.ts
+++ b/backend/src/modules/bitcoin/transaction/transaction.model.ts
@@ -1,9 +1,9 @@
 import { Field, Float, Int, ObjectType } from '@nestjs/graphql';
 import * as BitcoinApi from 'src/core/bitcoin-api/bitcoin-api.schema';
 import { BitcoinInput } from '../input/input.model';
-import { BitcoinOutput } from '../output/output.model';
+import { BitcoinBaseOutput, BitcoinOutput } from '../output/output.model';
 
-export type BitcoinBaseTransaction = BitcoinTransaction;
+export type BitcoinBaseTransaction = Omit<BitcoinTransaction, 'confirmations'>;
 
 @ObjectType({ description: 'Bitcoin Transaction' })
 export class BitcoinTransaction {
@@ -23,7 +23,7 @@ export class BitcoinTransaction {
   vin: BitcoinInput[];
 
   @Field(() => [BitcoinOutput])
-  vout: BitcoinOutput[];
+  vout: BitcoinBaseOutput[];
 
   @Field(() => Float)
   size: number;
@@ -37,10 +37,18 @@ export class BitcoinTransaction {
   @Field(() => Float)
   fee: number;
 
+  @Field(() => Float)
+  feeRate: number;
+
   @Field(() => Boolean)
   confirmed: boolean;
 
+  @Field(() => Float)
+  confirmations: number;
+
   public static from(tx: BitcoinApi.Transaction): BitcoinBaseTransaction {
+    const vSize = Math.ceil(tx.weight / 4);
+
     return {
       blockHeight: tx.status.block_height,
       blockHash: tx.status.block_hash,
@@ -52,6 +60,7 @@ export class BitcoinTransaction {
       locktime: new Date(tx.locktime),
       weight: tx.weight,
       fee: tx.fee,
+      feeRate: tx.fee / vSize,
       confirmed: tx.status.confirmed,
     };
   }
diff --git a/backend/src/modules/bitcoin/transaction/transaction.resolver.ts b/backend/src/modules/bitcoin/transaction/transaction.resolver.ts
index d813a069..b6c476fe 100644
--- a/backend/src/modules/bitcoin/transaction/transaction.resolver.ts
+++ b/backend/src/modules/bitcoin/transaction/transaction.resolver.ts
@@ -1,6 +1,7 @@
 import DataLoader from 'dataloader';
-import { Args, Query, Resolver } from '@nestjs/graphql';
+import { Args, Float, Parent, Query, ResolveField, Resolver } from '@nestjs/graphql';
 import { Loader } from '@applifting-io/nestjs-dataloader';
+import { BitcoinApiService } from '../../../core/bitcoin-api/bitcoin-api.service';
 import { BitcoinBaseTransaction, BitcoinTransaction } from './transaction.model';
 import {
   BitcoinTransactionLoader,
@@ -9,6 +10,8 @@ import {
 
 @Resolver(() => BitcoinTransaction)
 export class BitcoinTransactionResolver {
+  constructor(private bitcoinApiService: BitcoinApiService) {}
+
   @Query(() => BitcoinTransaction, { name: 'btcTransaction', nullable: true })
   public async getTransaction(
     @Args('txid') txid: string,
@@ -18,4 +21,15 @@ export class BitcoinTransactionResolver {
     const transaction = await transactionLoader.load(txid);
     return BitcoinTransaction.from(transaction);
   }
+
+  @ResolveField(() => Float)
+  public async confirmations(@Parent() transaction: BitcoinTransaction): Promise<number> {
+    if (!transaction.confirmed) {
+      return 0;
+    }
+
+    // TODO: should this resolver be refactored with a dataloader?
+    const info = await this.bitcoinApiService.getBlockchainInfo();
+    return info.blocks - transaction.blockHeight + 1;
+  }
 }
diff --git a/backend/src/modules/ckb/address/address.model.ts b/backend/src/modules/ckb/address/address.model.ts
new file mode 100644
index 00000000..dcc17144
--- /dev/null
+++ b/backend/src/modules/ckb/address/address.model.ts
@@ -0,0 +1,25 @@
+import { Field, Float, ObjectType } from '@nestjs/graphql';
+import { CkbTransaction } from '../transaction/transaction.model';
+
+export type CkbBaseAddress = Pick<CkbAddress, 'address'>;
+
+@ObjectType({ description: 'CKB Address' })
+export class CkbAddress {
+  @Field(() => String)
+  address: string;
+
+  @Field(() => Float)
+  shannon: number;
+
+  @Field(() => Float)
+  transactionCount: number;
+
+  @Field(() => [CkbTransaction])
+  transactions: CkbTransaction[];
+
+  public static from(address: string): CkbBaseAddress {
+    return {
+      address,
+    };
+  }
+}
diff --git a/backend/src/modules/ckb/address/address.module.ts b/backend/src/modules/ckb/address/address.module.ts
new file mode 100644
index 00000000..3a196257
--- /dev/null
+++ b/backend/src/modules/ckb/address/address.module.ts
@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { BitcoinApiModule } from 'src/core/bitcoin-api/bitcoin-api.module';
+import { CkbAddressResolver } from './address.resolver';
+
+@Module({
+  imports: [BitcoinApiModule],
+  providers: [CkbAddressResolver],
+})
+export class CkbAddressModule {}
diff --git a/backend/src/modules/ckb/address/address.resolver.ts b/backend/src/modules/ckb/address/address.resolver.ts
new file mode 100644
index 00000000..b4366646
--- /dev/null
+++ b/backend/src/modules/ckb/address/address.resolver.ts
@@ -0,0 +1,34 @@
+import { Args, Float, Parent, Query, ResolveField, Resolver } from '@nestjs/graphql';
+import { CkbTransaction } from '../transaction/transaction.model';
+import { CkbAddress } from './address.model';
+
+@Resolver(() => CkbAddress)
+export class CkbAddressResolver {
+  @Query(() => CkbAddress, { name: 'ckbAddress', nullable: true })
+  public async getCkbAddress(@Args('address') address: string): Promise<CkbAddress> {
+    // TODO: implement this resolver
+    return null;
+  }
+
+  @ResolveField(() => Float)
+  public async shannon(@Parent() address: CkbAddress): Promise<number> {
+    // TODO: implement this resolver
+    return 0;
+  }
+
+  @ResolveField(() => Float)
+  public async transactionCount(@Parent() address: CkbAddress): Promise<number> {
+    // TODO: implement this resolver
+    return 0;
+  }
+
+  @ResolveField(() => [CkbTransaction])
+  public async transactions(
+    @Parent() address: CkbAddress,
+    @Args('page', { nullable: true }) page?: number,
+    @Args('pageSize', { nullable: true }) pageSize?: number,
+  ): Promise<CkbTransaction[]> {
+    // TODO: implement this resolver
+    return [];
+  }
+}
diff --git a/backend/src/modules/ckb/block/block.model.ts b/backend/src/modules/ckb/block/block.model.ts
index 811931a8..bd21fd2a 100644
--- a/backend/src/modules/ckb/block/block.model.ts
+++ b/backend/src/modules/ckb/block/block.model.ts
@@ -1,9 +1,11 @@
 import { toNumber } from 'lodash';
 import { Field, Float, Int, ObjectType } from '@nestjs/graphql';
 import * as CkbRpc from 'src/core/ckb-rpc/ckb-rpc.interface';
+import { CkbAddress } from '../address/address.model';
+import { FeeRateRange } from '../../bitcoin/block/block.model';
 import { CkbTransaction } from '../transaction/transaction.model';
 
-export type CkbBaseBlock = Omit<CkbBlock, 'totalFee' | 'transactions'>;
+export type CkbBaseBlock = Omit<CkbBlock, 'totalFee' | 'feeRateRange' | 'miner' | 'transactions'>;
 
 @ObjectType({ description: 'CKB Block' })
 export class CkbBlock {
@@ -25,6 +27,12 @@ export class CkbBlock {
   @Field(() => Float)
   totalFee: number;
 
+  @Field(() => FeeRateRange)
+  feeRateRange: FeeRateRange;
+
+  @Field(() => CkbAddress)
+  miner: CkbAddress;
+
   @Field(() => [CkbTransaction])
   transactions: CkbTransaction[];
 
diff --git a/backend/src/modules/ckb/block/block.resolver.ts b/backend/src/modules/ckb/block/block.resolver.ts
index 69dd72ac..5e6eab64 100644
--- a/backend/src/modules/ckb/block/block.resolver.ts
+++ b/backend/src/modules/ckb/block/block.resolver.ts
@@ -3,6 +3,8 @@ import { BI } from '@ckb-lumos/bi';
 import { Loader } from '@applifting-io/nestjs-dataloader';
 import { Args, Float, Parent, Query, ResolveField, Resolver } from '@nestjs/graphql';
 import { CkbBaseTransaction, CkbTransaction } from '../transaction/transaction.model';
+import { FeeRateRange } from '../../bitcoin/block/block.model';
+import { CkbAddress } from '../address/address.model';
 import { CkbBlock, CkbBaseBlock } from './block.model';
 import {
   CkbBlockEconomicStateLoader,
@@ -36,6 +38,21 @@ export class CkbBlockResolver {
     return BI.from(blockEconomicState.txs_fee).toNumber();
   }
 
+  @ResolveField(() => FeeRateRange)
+  public async feeRateRange(@Parent() block: CkbBlock): Promise<FeeRateRange> {
+    // TODO: implement this resolver
+    return {
+      min: 0,
+      max: 0,
+    };
+  }
+
+  @ResolveField(() => CkbAddress)
+  public async miner(@Parent() block: CkbBlock): Promise<CkbAddress> {
+    // TODO: implement this resolver
+    return null;
+  }
+
   @ResolveField(() => [String])
   public async transactions(
     @Parent() { hash }: CkbBlock,
diff --git a/backend/src/modules/ckb/cell/cell.model.ts b/backend/src/modules/ckb/cell/cell.model.ts
index 115ed462..b170f611 100644
--- a/backend/src/modules/ckb/cell/cell.model.ts
+++ b/backend/src/modules/ckb/cell/cell.model.ts
@@ -18,7 +18,7 @@ export class CkbXUDTInfo {
   typeHash: string;
 }
 
-export type CkbBaseCell = Omit<CkbCell, 'xudtInfo'>;
+export type CkbBaseCell = Omit<CkbCell, 'xudtInfo' | 'spent'>;
 
 @ObjectType({ description: 'CKB Cell' })
 export class CkbCell {
@@ -40,6 +40,9 @@ export class CkbCell {
   @Field(() => CkbXUDTInfo, { nullable: true })
   xudtInfo: CkbXUDTInfo;
 
+  @Field(() => Boolean)
+  spent: boolean;
+
   public static from(tx: CkbRpc.Transaction, index: number): CkbBaseCell {
     const output = tx.outputs[index];
     return {
diff --git a/backend/src/modules/ckb/cell/cell.resolver.ts b/backend/src/modules/ckb/cell/cell.resolver.ts
index 23024ad8..a2e34292 100644
--- a/backend/src/modules/ckb/cell/cell.resolver.ts
+++ b/backend/src/modules/ckb/cell/cell.resolver.ts
@@ -11,4 +11,10 @@ export class CellResolver {
     const tx = await this.ckbExplorerService.getTransaction(cell.txHash);
     return tx.data.attributes.display_outputs[cell.index].xudt_info;
   }
+
+  @ResolveField(() => Boolean)
+  public async spent(@Parent() cell: CkbCell): Promise<boolean> {
+    // TODO: implement this resolver
+    return false;
+  }
 }
diff --git a/backend/src/modules/ckb/ckb.module.ts b/backend/src/modules/ckb/ckb.module.ts
index d1cbf569..dea0fcce 100644
--- a/backend/src/modules/ckb/ckb.module.ts
+++ b/backend/src/modules/ckb/ckb.module.ts
@@ -5,9 +5,17 @@ import { CkbCellModule } from './cell/cell.module';
 import { CkbTransactionModule } from './transaction/transaction.module';
 import { CkbScriptModule } from './script/script.module';
 import { CkbResolver } from './ckb.resolver';
+import { CkbAddressModule } from './address/address.module';
 
 @Module({
-  imports: [CkbRpcModule, CkbBlockModule, CkbTransactionModule, CkbCellModule, CkbScriptModule],
+  imports: [
+    CkbRpcModule,
+    CkbBlockModule,
+    CkbTransactionModule,
+    CkbAddressModule,
+    CkbCellModule,
+    CkbScriptModule,
+  ],
   providers: [CkbResolver],
 })
 export class CkbModule {}
diff --git a/backend/src/modules/ckb/transaction/transaction.model.ts b/backend/src/modules/ckb/transaction/transaction.model.ts
index 8628821e..f67c2b5b 100644
--- a/backend/src/modules/ckb/transaction/transaction.model.ts
+++ b/backend/src/modules/ckb/transaction/transaction.model.ts
@@ -4,7 +4,10 @@ import * as CkbRpc from 'src/core/ckb-rpc/ckb-rpc.interface';
 import { CkbBaseCell, CkbCell } from '../cell/cell.model';
 import { CkbBlock } from '../block/block.model';
 
-export type CkbBaseTransaction = Omit<CkbTransaction, 'block' | 'inputs'>;
+export type CkbBaseTransaction = Omit<
+  CkbTransaction,
+  'block' | 'feeRate' | 'size' | 'inputs' | 'confirmations'
+>;
 
 @ObjectType({ description: 'CKB Transaction' })
 export class CkbTransaction {
@@ -20,6 +23,12 @@ export class CkbTransaction {
   @Field(() => Float)
   fee: number;
 
+  @Field(() => Float)
+  feeRate: number;
+
+  @Field(() => Float)
+  size: number;
+
   @Field(() => [CkbCell])
   inputs: CkbBaseCell[];
 
@@ -29,6 +38,9 @@ export class CkbTransaction {
   @Field(() => CkbBlock)
   block: CkbBlock;
 
+  @Field(() => Float)
+  confirmations: number;
+
   public static from(transactionWithStatus: CkbRpc.TransactionWithStatusResponse) {
     const { transaction, tx_status, fee } = transactionWithStatus;
     const isCellbase = transaction.inputs[0].previous_output.tx_hash.endsWith('0'.repeat(64));
diff --git a/backend/src/modules/ckb/transaction/transaction.resolver.ts b/backend/src/modules/ckb/transaction/transaction.resolver.ts
index 36880529..770941e2 100644
--- a/backend/src/modules/ckb/transaction/transaction.resolver.ts
+++ b/backend/src/modules/ckb/transaction/transaction.resolver.ts
@@ -1,7 +1,7 @@
 import DataLoader from 'dataloader';
 import { BI } from '@ckb-lumos/bi';
 import { Loader } from '@applifting-io/nestjs-dataloader';
-import { Args, Parent, Query, ResolveField, Resolver } from '@nestjs/graphql';
+import { Args, Float, Parent, Query, ResolveField, Resolver } from '@nestjs/graphql';
 import { CkbTransaction, CkbBaseTransaction } from './transaction.model';
 import { CkbTransactionLoader, CkbTransactionLoaderResponse } from './transaction.dataloader';
 import { CkbBlockLoader, CkbBlockLoaderResponse } from '../block/block.dataloader';
@@ -53,4 +53,22 @@ export class CkbTransactionResolver {
     const block = await blockLoader.load(transaction.blockNumber.toString());
     return CkbBlock.from(block);
   }
+
+  @ResolveField(() => Float)
+  public async feeRate(@Parent() transaction: CkbBaseTransaction): Promise<number> {
+    // TODO: implement this resolver
+    return 0;
+  }
+
+  @ResolveField(() => Float)
+  public async size(@Parent() transaction: CkbBaseTransaction): Promise<number> {
+    // TODO: implement this resolver
+    return 0;
+  }
+
+  @ResolveField(() => Float)
+  public async confirmations(@Parent() transaction: CkbBaseTransaction): Promise<number> {
+    // TODO: implement this resolver
+    return 0;
+  }
 }
diff --git a/backend/src/modules/rgbpp/coin/coin.resolver.ts b/backend/src/modules/rgbpp/coin/coin.resolver.ts
index 25864dab..b42b8478 100644
--- a/backend/src/modules/rgbpp/coin/coin.resolver.ts
+++ b/backend/src/modules/rgbpp/coin/coin.resolver.ts
@@ -8,7 +8,7 @@ import { RgbppBaseCoin, RgbppCoin, RgbppCoinList } from './coin.model';
 export class RgbppCoinResolver {
   constructor(private ckbExplorerService: CkbExplorerService) {}
 
-  @Query(() => RgbppCoinList, { name: 'rgbppCoinList' })
+  @Query(() => RgbppCoinList, { name: 'rgbppCoins' })
   public async coins(
     @Args('page', { type: () => Int, nullable: true }) page: number = 1,
     @Args('pageSize', { type: () => Int, nullable: true }) pageSize: number = 10,
diff --git a/backend/src/modules/rgbpp/transaction/transaction.resolver.ts b/backend/src/modules/rgbpp/transaction/transaction.resolver.ts
index e90d4348..756396b2 100644
--- a/backend/src/modules/rgbpp/transaction/transaction.resolver.ts
+++ b/backend/src/modules/rgbpp/transaction/transaction.resolver.ts
@@ -11,7 +11,11 @@ import {
   BitcoinTransactionLoader,
   BitcoinTransactionLoaderResponse,
 } from 'src/modules/bitcoin/transaction/transaction.dataloader';
-import { RgbppBaseTransaction, RgbppLatestTransactionList, RgbppTransaction } from './transaction.model';
+import {
+  RgbppTransaction,
+  RgbppBaseTransaction,
+  RgbppLatestTransactionList,
+} from './transaction.model';
 import { RgbppTransactionService } from './transaction.service';
 
 @Resolver(() => RgbppTransaction)
@@ -19,7 +23,7 @@ export class RgbppTransactionResolver {
   constructor(private transactionService: RgbppTransactionService) {}
 
   @Query(() => RgbppLatestTransactionList, { name: 'rgbppLatestTransactions' })
-  public async getLatestTransaction(
+  public async getLatestTransactions(
     @Args('page', { type: () => Int, nullable: true }) page: number = 1,
     @Args('pageSize', { type: () => Int, nullable: true }) pageSize: number = 10,
   ): Promise<RgbppLatestTransactionList> {
@@ -56,6 +60,9 @@ export class RgbppTransactionResolver {
     @Loader(BitcoinTransactionLoader)
     btcTxLoader: DataLoader<string, BitcoinTransactionLoaderResponse>,
   ) {
+    if (!tx.btcTxid) {
+      return null;
+    }
     const btcTx = await btcTxLoader.load(tx.btcTxid);
     if (!btcTx) {
       return null;
diff --git a/backend/src/modules/rgbpp/transaction/transaction.service.ts b/backend/src/modules/rgbpp/transaction/transaction.service.ts
index 657fea0e..61ba8af4 100644
--- a/backend/src/modules/rgbpp/transaction/transaction.service.ts
+++ b/backend/src/modules/rgbpp/transaction/transaction.service.ts
@@ -1,7 +1,11 @@
 import { Injectable } from '@nestjs/common';
 import { BitcoinApiService } from 'src/core/bitcoin-api/bitcoin-api.service';
 import { CkbExplorerService } from 'src/core/ckb-explorer/ckb-explorer.service';
-import { RgbppBaseTransaction, RgbppLatestTransactionList, RgbppTransaction } from './transaction.model';
+import {
+  RgbppTransaction,
+  RgbppBaseTransaction,
+  RgbppLatestTransactionList,
+} from './transaction.model';
 
 @Injectable()
 export class RgbppTransactionService {
diff --git a/backend/src/schema.gql b/backend/src/schema.gql
index 5992df44..750e2727 100644
--- a/backend/src/schema.gql
+++ b/backend/src/schema.gql
@@ -25,38 +25,15 @@ type CkbCell {
   type: CkbScript
   lock: CkbScript!
   xudtInfo: CkbXUDTInfo
+  spent: Boolean!
 }
 
-"""CKB Block"""
-type CkbBlock {
-  version: Int!
-  hash: String!
-  number: Int!
-  timestamp: Timestamp!
-  transactionsCount: Int!
-  totalFee: Float!
-  transactions: [CkbTransaction!]!
-}
-
-"""
-`Date` type as integer. Type represents date and time as number of milliseconds from start of UNIX epoch.
-"""
-scalar Timestamp
-
-"""CKB Transaction"""
-type CkbTransaction {
-  isCellbase: Boolean!
-  blockNumber: Int!
-  hash: String!
-  fee: Float!
-  inputs: [CkbCell!]!
-  outputs: [CkbCell!]!
-  block: CkbBlock!
-}
-
-"""CKB ChainInfo"""
-type CkbChainInfo {
-  tipBlockNumber: Float!
+"""CKB Address"""
+type CkbAddress {
+  address: String!
+  shannon: Float!
+  transactionCount: Float!
+  transactions(page: Float, pageSize: Float): [CkbTransaction!]!
 }
 
 """Bitcoin Address"""
@@ -76,6 +53,7 @@ type BitcoinOutput {
   scriptpubkeyAddress: String
   value: Float!
   address: BitcoinAddress
+  spent: Boolean!
 }
 
 """Bitcoin Input"""
@@ -101,7 +79,70 @@ type BitcoinTransaction {
   locktime: Timestamp!
   weight: Float!
   fee: Float!
+  feeRate: Float!
   confirmed: Boolean!
+  confirmations: Float!
+}
+
+"""
+`Date` type as integer. Type represents date and time as number of milliseconds from start of UNIX epoch.
+"""
+scalar Timestamp
+
+"""Fee Rate Range"""
+type FeeRateRange {
+  min: Float!
+  max: Float!
+}
+
+"""Bitcoin Block"""
+type BitcoinBlock {
+  id: String!
+  height: Float!
+  version: Int!
+  timestamp: Timestamp!
+  txCount: Float!
+  size: Float!
+  weight: Float!
+  bits: Float!
+  difficulty: Float!
+  miner: BitcoinAddress!
+  reward: Float!
+  totalFee: Float!
+  feeRateRange: FeeRateRange!
+  transactions: [BitcoinTransaction!]!
+}
+
+"""CKB Block"""
+type CkbBlock {
+  version: Int!
+  hash: String!
+  number: Int!
+  timestamp: Timestamp!
+  transactionsCount: Int!
+  totalFee: Float!
+  feeRateRange: FeeRateRange!
+  miner: CkbAddress!
+  transactions: [CkbTransaction!]!
+}
+
+"""CKB Transaction"""
+type CkbTransaction {
+  isCellbase: Boolean!
+  blockNumber: Int!
+  hash: String!
+  fee: Float!
+  feeRate: Float!
+  size: Float!
+  inputs: [CkbCell!]!
+  outputs: [CkbCell!]!
+  block: CkbBlock!
+  confirmations: Float!
+}
+
+"""CKB ChainInfo"""
+type CkbChainInfo {
+  tipBlockNumber: Float!
 }
 
 """RGB++ Transaction"""
@@ -169,38 +210,17 @@ type BitcoinChainInfo {
   fees: BitcoinFees!
 }
 
-"""Fee Rate Range"""
-type FeeRateRange {
-  min: Float!
-  max: Float!
-}
-
-"""Bitcoin Block"""
-type BitcoinBlock {
-  id: String!
-  height: Float!
-  version: Int!
-  timestamp: Timestamp!
-  txCount: Float!
-  size: Float!
-  weight: Float!
-  bits: Float!
-  difficulty: Float!
-  miner: BitcoinAddress!
-  totalFee: Float!
-  feeRateRange: FeeRateRange!
-  transactions: [BitcoinTransaction!]!
-}
-
 type Query {
   ckbChainInfo: CkbChainInfo!
   ckbBlock(heightOrHash: String!): CkbBlock!
   ckbTransaction(txHash: String!): CkbTransaction
+  ckbAddress(address: String!): CkbAddress
   btcChainInfo: BitcoinChainInfo!
   btcBlock(hashOrHeight: String!): BitcoinBlock!
   btcTransaction(txid: String!): BitcoinTransaction
+  btcAddress(address: String!): BitcoinAddress
   rgbppLatestTransactions(page: Int, pageSize: Int): RgbppLatestTransactionList!
   rgbppTransaction(txidOrTxHash: String!): RgbppTransaction
-  rgbppCoinList(page: Int, pageSize: Int): RgbppCoinList!
+  rgbppCoins(page: Int, pageSize: Int): RgbppCoinList!
   rgbppCoin(typeHash: String!): RgbppCoin!
 }
\ No newline at end of file