{"block":{"chainId":10,"hash":"0x129fea34b2fe47294dc056c50954399b7b6402bc375db01095a31a84ee973364","number":"154971811","timestamp":1785542399},"call":{"args":[],"data":"0x18160ddd","fn":"totalSupply()","result":"0x00000000000000000000000000000000000000000000000000008cbeb600113c","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":"0x78924bdd88846335d05ce6c1061aec8399c4c7c0d2b225adb99120f88277e1a7","id":"rcpt_78924bdd88846335d05c","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 154971811 --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\":\"0x129fea34b2fe47294dc056c50954399b7b6402bc375db01095a31a84ee973364\",\"requireCanonical\":true}]}'"},"source":{"endpoint":"conduit","fetchedAt":"2026-10-29T15:21:02.134Z","provider":"Archive RPC node (single provider, via Conduit)","responseHash":"0x530e4e3ace6ca7de9749634c66b8e544bc07349bba258a6593cfbe81d2ac5dae"},"subject":{"label":"USDC totalSupply on OP Mainnet, 2026-07-31 UTC close","unit":"raw","value":"154750725132604"},"v":1}