thumb|upright=1.35|The 2004 Indian Ocean tsunami at Ao Nang, Krabi Province, Thailand A tsunami ( ; Entry: "tsunami" from , ) is a series of waves in a water body caused by the displacement of a large
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 0xe44c3a46b84a7395b35a2515b7da5796478b3b7d958ed7ee0438d8b417ef85b5. Chain 2 (Bitcoin): anchored in block 953903 (2026-06-16T07:05:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/149b24f9-09d1-4db4-83f4-d9b5e50023e1.json and https://artists.proofprofile.net/proofs/artist/149b24f9-09d1-4db4-83f4-d9b5e50023e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).