มาริโอ้, ฟรอยด์, เผือก, เชน, บอมบ์
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 0x5251bca1ad76b071e8b11ae658bffbb415cdd52532f40985ff3b9be7c5c61660. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21e1975a-812a-4039-8f98-d08ccfec0c07.json and https://artists.proofprofile.net/proofs/artist/21e1975a-812a-4039-8f98-d08ccfec0c07.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).