~/talk

Taming The Web3 Data Zoo: Hands-on Tutorial

on YouTube 25m
Talkat Big Data LDN 2022 · 2022-09-21..09-22· [web3, data-engineering]

speaker

name:Surya Rastogi
links:none on file

resources

video:https://youtu.be/hkeA4TLKASw
slides:none on file

summary

Live demo shows a reproducible Datalore notebook that queries an ERC‑721 token from Ethereum, computes the keccak256 four‑byte selector and pads the uint256 token parameter, then issues eth_call via Cloudflare JSON‑RPC to retrieve the tokenURI, extracts the IPFS CID and GETs it from an IPFS gateway fetch, returning the NFT JSON and image. Example ties to the Christie’s sale that hit about $70M and uses Python + pysha3; the pipeline resolves and verifies on‑chain → IPFS metadata.

AI-written summary · about

chapters (8)

  1. 0:00Introduction to Web3 data
  2. 3:11Understanding NFT sales
  3. 8:50ERC721 metadata interface
  4. 14:34Querying Ethereum blockchain
  5. 18:45IPFS decentralized storage
  6. 21:54Verifying NFT metadata
  7. 23:41Centralization risks in Web3
  8. 24:02Conclusion and resources

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