Increase gas price (#469)

* Added alfajores proposal

* Added example tx hash

* Fixed date format

CGPs/cgp-0145.md

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+---
+cgp: 145
+title: Increase minimum gas threshold to 25000000000 gwei
+date-created: 2024-08-06
+author: Martín Volpe (@martinvol)
+status: DRAFT
+discussions-to:
+governance-proposal-id:
+date-executed:
+---
+
+### Proposal Overview
+
+We propose to increase gas_price_minimum_(lower_bound) so that the gas of a simple ERC20 transaction, paid in stablecoins, costs around 0.1 cents or USD 0.001. Note that transactions paid in stablecoins use slightly more gas than standard ERC20 transactions.
+
+This has previously been attempted with [CGP 66](https://github.com/celo-org/governance/blob/277ae3cb52e8bbb0e7f74c819b9b09f738f4bbd0/CGPs/cgp-0066.md), but as the value of CELO has shifted, as well as how much gas is needed to a cUSD transfer changed, it is required to update the parameters. The option to pay for gas with USDC and USDT has been added since then as well.
+
+Definitions of terms used and an overall explanation of the setup can be found in [CGP 66](https://github.com/celo-org/governance/blob/277ae3cb52e8bbb0e7f74c819b9b09f738f4bbd0/CGPs/cgp-0066.md).
+
+Please note: 
+* This increase only impacts the base fee, meaning that the validator rewards from gas remain unaltered.
+* We are confident this increase addresses the issues we discuss under _Rationale_, while at the same time the proposed fees are so low that they should not interfere with most use of the blockchain.
+
+### Rationale
+
+This proposal builds on the rationale of [CGP 66](TBD), where the effort was to keep gas cost for cUSD at  $0.01 for a transfer paid for cUSD itself. Since then, it's been made possible to pay gas with USDC and USDT and the total cost for a tx has reduced considerably. These are gas costs of transfers of those tokens on mainnet at the time of writing:
+
+cUSD
+Example tx hash: 0x485e1aaab931ff206dbdd3994ae76a2e0f890f6d91ddf1405c76549b41ca32e3
+Cost: 0.000237143493845625 cUSD
+USDC:
+Example tx hash: 0x45b84acb1f440509b85d8ab942e489c28427751a3cf55f558a6bf8f7df8aeea2
+Cost: 0.000240841172077479
+USDT:
+	Example tx hash: 
+0x2310021513441c5ba42b028f907732510143d9e3e23d03719830a4b5cbd8d32d
+Cost: 0.000237139846444008
+
+
+After this change is implemented, the most expensive stable asset transfer will cost $0.00120420586. 
+
+Please note that these numbers are illustrative, smart contracts are complex and how much gas a transfer takes may vary depending on many factors. The actual cost of gas is also volatile, affected also by the value of CELO and network usage.
+
+### Testing
+
+This change has already been deployed to alfajores, you can see a test transaction here where the gas for a stable asset was 0.1 cent of cUSD. Here's an example tx hash: [0x36d33d45a5a1c4c2a20fef6ba6e771569c361ae0152fd2dc198043150f49d398](https://alfajores.celoscan.io/tx/0x36d33d45a5a1c4c2a20fef6ba6e771569c361ae0152fd2dc198043150f49d398)
+
+## Proposed Changes
+
+
+1. Setting a new gas price minimum
+  - Destination: GasPriceMinimum.setGasPriceMinimumFloor
+  - Data: ["25000000000"]
+  - Value: 0
+
+## Verification
+
+Current GasPriceMinimum floor can be fetched with:
+
+`celocli network:parameters --node https://forno.celo.org`
+
+The proposal can be fetched with:
+
+`$ celocli governance:view --proposalID $proposalID --node https://forno.celo.org`
+
+The proposed number should be 5x higher than the current gas price.
+
+## Useful Links
+
+* Forum Post 
+* Forum Post for previous gas price minimum modification https://forum.celo.org/t/increase-of-minimum-gas-fee/4616
+* Celo Docs: Gas Pricing https://docs.celo.org/protocol/transaction/gas-pricing

CGPs/cgp-0145/alfajores.json

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+[
+    {
+      "contract": "GasPriceMinimum",
+      "function": "setGasPriceMinimumFloor",
+      "args": [
+        "25000000000"
+      ],
+      "value": "0"
+    }
+  ]