Robert, Bob or Bobby Davidson may refer to: Arts Robert Davidson (artist) (born 1946), Alaska-born Canadian Haida artist Robert Davidson (composer) (born 1965), Australian composer and double bassi
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 0xd5e7869ba01c11e7241112af8edc762f8b23c04e30c775cb2ebf4e6cdd716e6f. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5223d8aa-b6e7-4471-9f42-4ffc2c3b1e76.json and https://artists.proofprofile.net/proofs/artist/5223d8aa-b6e7-4471-9f42-4ffc2c3b1e76.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).