Otis Leavill (February 8, 1937 Otis Leavill at Soulwalking.com Accessed 8 February 2010 Discography and biographical note at SoulfulKindaMusic.com. Accessed 8 February 2010Some other sources give birt
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 0xd47185c450638ba768ab847a10f2a334fcd16384f15f50da6a10a19143157694. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd259970-e282-4426-813d-be26431269cb.json and https://artists.proofprofile.net/proofs/artist/fd259970-e282-4426-813d-be26431269cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).