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 0x802f44fb2c1856a8a0ef3373f6dc3c314f59d8d000685995ff9b673a9f9a7f6f. 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/443761b4-d9cf-42d8-b40e-f364f5c133da.json and https://artists.proofprofile.net/proofs/artist/443761b4-d9cf-42d8-b40e-f364f5c133da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tmwycf (Tell Me Why You Came For) [feat. Grynch, Taane Jr & Billy the Fridge]