Explorer fails to decode call to system contract

[ericleponner]

Description

Explorer fails to decode the following call to system contract:

https://hashscan.io/mainnet/transaction/1684236107.179110285

In navigator console, the following error is reported by parseTransaction() function (ethers library):

Uncaught (in promise) Error: no matching function (argument="sighash", value="0x618dc65e", code=INVALID_ARGUMENT, version=abi/5.7.0)
    at Logger.makeError (index.js?ffb2:224:1)
    at Logger.throwError (index.js?ffb2:233:1)
    at Logger.throwArgumentError (index.js?ffb2:236:1)
    at Interface.getFunction (interface.js?a807:143:1)
    at Interface.parseTransaction (interface.js?a807:548:1)
    at _callee$ (FunctionCallAnalyzer.ts?d126:119:1)
    at tryCatch (runtime.js?96cf:63:1)
    at Generator.invoke [as _invoke] (runtime.js?96cf:294:1)
    at Generator.eval [as next] (runtime.js?96cf:119:1)
    at asyncGeneratorStep (asyncToGenerator.js?1da1:3:1)

Steps to reproduce

Go to https://hashscan.io/mainnet/transaction/1684236107.179110285

Additional context

No response

Hedera network

mainnet

Version

Built Mon, 15 May 2023 14:06:52 GMT

Operating system

macOS

[ericleponner]

Root cause of decoding error is that HTS ABI embedded in Explorer (IHederaTokenService.json) is obsolete.

However using the latest ABI, etherjs still throws a data out-of-bounds error.
So it looks like input value from 1684236107.179110285 cannot be decoded anymore.

Anyway Explorer should be enhanced and inform user that it is facing an invaliding encoding.

[mshakeg]

Hi @ericleponner can you elaborate why the call cannot be decoded even using the latest HTS abi?

I've experienced this issue very recently: https://hashscan.io/testnet/transaction/1687896276.413382005

[ericleponner]

Hi @mshakeg
You can find more information in the bug I filed in smart-contract.
However my conclusions might be wrong according latest bug update. I need to dig into it a bit more i guess.