{"block":{"chainId":10,"hash":"0xd3b578d7e1a455afefb0e4c85f6ca72a47b4657d6b318411303092cca29f02d9","number":"137864611","timestamp":1751327999},"call":{"args":[],"data":"0x18160ddd","fn":"totalSupply()","result":"0x0000000000000000000000000000000000000000000000000000ab197543e55c","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":"0x9381465e60c7f7f44fd424cbba74808179707183b71db83de33a192932df3daa","id":"rcpt_9381465e60c7f7f44fd4","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 137864611 --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\":\"0xd3b578d7e1a455afefb0e4c85f6ca72a47b4657d6b318411303092cca29f02d9\",\"requireCanonical\":true}]}'"},"source":{"endpoint":"conduit","fetchedAt":"2026-10-29T15:21:23.155Z","provider":"Archive RPC node (single provider, via Conduit)","responseHash":"0x4c7f5ddd4219ab212fa5c47394c1f5ed8d150a79fac26b705fd75bef81169502"},"subject":{"label":"USDC totalSupply on OP Mainnet, 2025-06-30 UTC close","unit":"raw","value":"188125829915996"},"v":1}