The African fugu (smock) also called batakari in the Asante Twi language, is a traditional garment from West Africa. Though it originates from Northern Ghana, it has gained acceptance throughout the c
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108711ef0386fb9e99b466aa8eaabf3df6542da3de2d93a91c879d57b929dd21. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05b2b421-0f8f-4486-94d9-79a296ab6c99.json and https://artists.proofprofile.net/proofs/artist/05b2b421-0f8f-4486-94d9-79a296ab6c99.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).