The "unauthorized" error when using multichain strategy

[jakub-zarembinski]

I'm trying to apply the multichain voting strategy for this proposal.

Here is the config I've applied for the strategy:

{
  "symbol": "EXN",
  "blockApi": "https://i1sak4tqoh.execute-api.eu-central-1.amazonaws.com/v1/blocks",
  "strategies": [
    {
      "name": "erc20-balance-of",
      "params": {
        "address": "0x81ea4161AeF246A72253CdB20F852519ec61689c",
        "decimals": 18
      },
      "network": "97"
    },
    {
      "name": "erc20-balance-of",
      "params": {
        "address": "0x0aF4F2f52E59aB68CfF8C016778Af329baFDc85C",
        "decimals": 18
      },
      "network": "80001"
    }
  ]
}

However, when trying to vote with this strategy or when trying it out in the playground I'm getting the error 500 and the error message "unauthorized".

Here are the details of those error messages:

What's strange is the fact that in the playground when I apply a block number which is very close to the latest one, everything works fine:

But for a bit older block numbers the playground fails and I'm getting the error message "Cannot read properties of undefined (reading 'scores')" and the 500 error.

Here are the addresses I'm using for testing:

0x83C38E7AC47B1ba9CD21E106322DD1BA35E6055f
0x09aa80Dd70f6d4ac00BA3a7aCE1999491a64605D
0x599AaCb67e0a56bd01C38F7Ce55C8a65B0b60fcc

What am I doing wrong?

EDIT: Further observations:

(1) It seems this problem is also affecting the basic single-chain strategy "erc20-balance-of", which is applied in this proposal.

(2) The details of the error message indicate that the problem stems from "missing trie node", which is described here. This would be consistent with my earlier observation about queries using recent blocks working properly, while queries for more distant block numbers fail.

[samuveth]

Do you really need a multichain strategy here? You could just use the erc-20 twice and select the right network for each @jakub-zarembinski

[ChaituVR]

Also, does the "blockApi" endpoint matter in the multichain strategy configuration?

You can remove it, it is not being used anymore

However, after replacing Mumbai with Rinkeby (so I now have BSC Testnet & Rinkeby) I'm still having the same problem.

Can share playground link for this? will take a look.

What about BSC Testnet? Does it have an archive node?
Or more generally: which two testnets are safe to use in terms of archive nodes?

As of now only mumbai node is not full archive others should work,

[jakub-zarembinski]

@ChaituVR

Can share playground link for this? will take a look.

Here is a proposal with a simple ""erc20-balance-of"" strategy on BSC Testnet:
https://demo.snapshot.org/#/shopdock.eth/proposal/0x1cd41327c41620c7554adb009bf8fe8454e0c547dd733ac3330ecf68f847dd98

For me it fails with the same "unauthorized" error.

Here is the corresponding playground for the strategy:
https://demo.snapshot.org/#/playground/erc20-balance-of?query=eyJuZXR3b3JrIjoiOTciLCJzbmFwc2hvdCI6IjIxNjI2MTYzIiwicGFyYW1zIjp7InN5bWJvbCI6IkRBVEExIiwiYWRkcmVzcyI6IjB4ODFlYTQxNjFBZUYyNDZBNzIyNTNDZEIyMEY4NTI1MTllYzYxNjg5YyIsImRlY2ltYWxzIjoxOH19

Here is a list of accounts which have a balance on the 0x81ea4161AeF246A72253CdB20F852519ec61689c token on BSC Testnet:
0x83C38E7AC47B1ba9CD21E106322DD1BA35E6055f
0x09aa80Dd70f6d4ac00BA3a7aCE1999491a64605D
0x599AaCb67e0a56bd01C38F7Ce55C8a65B0b60fcc

(The playground might work for snapshot 21626163 if it's cached, but it fails for any other snapshot number).

[ChaituVR]

It works fine for me? 🤔 Maybe there was some problem at that time?

[ChaituVR]

[ChaituVR]

@jakub-zarembinski I think it is working because of cache, I changed node to a more consistent one, should work fine :) let me know