Drew may refer to: __NOTOC__ Places In the United States Drew, Georgia, an unincorporated community Drew, Mississippi, a city Drew, Missouri, an unincorporated community Drew, Oregon, an unincorp
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f47d959672ea65eed7f519ac02691dde7cf2cdedb04ccf75f0de8b6011d55f3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68c4692a-3f6c-4748-b85c-da31fe17b598.json and https://artists.proofprofile.net/proofs/artist/68c4692a-3f6c-4748-b85c-da31fe17b598.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).