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9128 :: My nooby questions on nim-web3 library

• Cnerd (orginal) [2022-04-26T11:03:06+02:00] view original

  Hello 👋, I plan on executing a personal project and I need some information before I start. I have googling for over a week now and some of my questions are still left unanswered that's why I want to ask folks on this forum, any contribution is very much appreciated. Here are my questions

  • how many blockchains does the nim-web3 library support and what are their names
  • I have some experience using web3.py for the Ethereum Blockchain and I tried to get all nfts associated with a wallet but there was no feature such as that. Apparently I'll have to check all transactions since the start of the Blockchain in other to do that and I know I could cache the Blockchain data but that would be overkill for my project so does the nim-web3 library have such a feature
  • And the final and most nooby question of all what is the difference between and normal transaction and a token transaction data on a Blockchain using Ethereum as an example

  Thanks 🙏 I appreciate all answers

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• zahary (orginal) [2022-04-28T19:08:14+02:00] view original

  nim-web3 supports only Ethereum at the moment. In general, the web3 libraries tend to be specialized for a particular blockchain. Coming up with a common interface for all blockchains would result in a rather limited and overly abstract library.

  You'll need to clarify what you mean by "token transaction data" because this is not a well established term. Perhaps you refer to transactions involving ERC20 tokens? These differ from "normal" transactions in the sense that they must execute a smart contract function that will take care of transferring the ERC20 tokens (which are represented by variables in a smart contract instead of something that's baked at a deeper level in the protocol).

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• Cnerd (orginal) [2022-04-29T05:21:03+02:00] view original

  Thanks for the clarification

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• Cnerd (orginal) [2022-04-29T11:18:08+02:00] view original

  Hi one more question if you don't mind. Is it possible to get all data on a nft from just the transaction hash of a transaction the nft was involved in, and if so can you give an example of how it can be done. I saw a example on the web but there were some part of the code I don't understand like using the ABIs to decide the transaction log or using a erc721 keccak encoded string to confirm if the transaction does contain an nft.

  Here is the link to the example I found https://medium.com/@hazenbart/determining-nft-ownership-at-large-scale-using-web3-py-f1d5752edf08

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