{"block":{"chainId":10,"hash":"0xf8a40c384218d4ac1a7f9f09c31fd0fe2168baa983e10b77f7607a3d79f02793","number":"147152611","timestamp":1769903999},"call":{"args":[],"data":"0x18160ddd","fn":"totalSupply()","result":"0x0000000000000000000000000000000000000000000000000000194df1cb5f7e","specId":"erc20.totalSupply","to":"0x7f5c764cbc14f9669b88837ca1490cca17c31607"},"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":"0x70ffb7ec2e3ad98c571c003f75ff8d40b00aef0d912f45028942c9e24596837d","id":"rcpt_70ffb7ec2e3ad98c571c","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 0x7f5c764cbc14f9669b88837ca1490cca17c31607 \"totalSupply()(uint256)\" --block 147152611 --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\":\"0x7f5c764cbc14f9669b88837ca1490cca17c31607\",\"data\":\"0x18160ddd\"},{\"blockHash\":\"0xf8a40c384218d4ac1a7f9f09c31fd0fe2168baa983e10b77f7607a3d79f02793\",\"requireCanonical\":true}]}'"},"source":{"endpoint":"conduit","fetchedAt":"2026-10-29T15:20:43.287Z","provider":"Archive RPC node (single provider, via Conduit)","responseHash":"0x5fa2bdfb07732b370884036c0607cacd0f2f0480c562af0512d669d97876d91b"},"subject":{"label":"USDC totalSupply on OP Mainnet, 2026-01-31 UTC close","unit":"raw","value":"27822559813502"},"v":1}