Hi! We are looking for a backend dev with experience on processing / decoding large amounts of ethereum transactions. We are looking to index all dex + nft TX in a database. Full-Time position possible after task completion.
there is a catch:
I also need the metadata URLs from NFT contracts that are being used on OpenSea (or actually all NFT contracts that get published). you are aware that usually the metadata URL is added to contracts later by calling a function, so "constant" monitoring is needed
also - I need this to be viable for very, very quick (as fast as possible) reaction times. Eventually, a tool that works on this foundation might want to trigger reactions quickly (e.g. copy a trade on a DEX or a minting of a NFT)
maybe even - thats just a bonus - with current balances visible for buyer / seller at any time (time of the transaction) and other small things..so basically as soon as a token gets approved for listing on opensea (which would be the very first time it appears on opensea, before the first sale), we start looking for a metadata URL on the contract address
basically (i am not a dev, if its not obvious by now) we need to check if transactions use a function called setBaseURI for ERC721 (i hope thats the right number) or if any other call to the contracts holds a URL. it wont work in 100% of cases. some people solve it different. some do it weird. but it should work in more than 80% of cases.
If you are interesting this project and saw all requirement carefully, write "decode transaction" in the head of your coverletter.
16 freelancer chào giá trung bình$1385 cho công việc này
Decode Transaction I read your description carefully, i can do it with high quality. I would like to have a chat for more detail I am looking forward to your good news.