{"block":{"chainId":10,"hash":"0xb246bc7d23c2a9016b8af6b3d1531bb35ede485841b636fe04bd99a7b6681099","number":"143178211","timestamp":1761955199},"call":{"args":[],"data":"0x18160ddd","fn":"totalSupply()","result":"0x0000000000000000000000000000000000000000000000000000fd14f085b91b","specId":"erc20.totalSupply","to":"0x0b2c639c533813f4aa9d7837caf62653d097ff85"},"checks":[{"detail":"eth_call totalSupply() at the day's last block, by block number, on one archive RPC provider; responseHash is sha256 of the response text as landed","name":"rpc","status":"pass"},{"detail":"block hash and timestamp from eth_getBlockByNumber at that block number on the same provider","name":"block-header","status":"pass"}],"hash":"0x7ff1a262ea32ab7e4c079fa671c4d24686440f42e07799660de653272e28885f","id":"rcpt_7ff1a262ea32ab7e4c07","kind":"eth_call","lineage":{"inputs":[],"transform":{"expression":"total_supply_raw = uint256(result); total_supply = total_supply_raw / 10^decimals","name":"erc20.totalSupply","version":"1"}},"proofLevel":1,"reproduce":{"cast":"cast call 0x0b2c639c533813f4aa9d7837caf62653d097ff85 \"totalSupply()(uint256)\" --block 143178211 --rpc-url $RPC_URL","curl":"curl -s -X POST \"$RPC_URL\" -H 'content-type: application/json' --data '{\"jsonrpc\":\"2.0\",\"id\":1,\"method\":\"eth_call\",\"params\":[{\"to\":\"0x0b2c639c533813f4aa9d7837caf62653d097ff85\",\"data\":\"0x18160ddd\"},{\"blockHash\":\"0xb246bc7d23c2a9016b8af6b3d1531bb35ede485841b636fe04bd99a7b6681099\",\"requireCanonical\":true}]}'"},"source":{"endpoint":"conduit","fetchedAt":"2026-10-29T15:23:21.114Z","provider":"Archive RPC node (single provider, via Conduit)","responseHash":"0x00d260804023b09c7512b69fe3b1dea27aa95e52df3770434637e68a4e058a6b"},"subject":{"label":"USDC totalSupply on OP Mainnet, 2025-10-31 UTC close","unit":"raw","value":"278266376468763"},"v":1}