thumb|254x254px|A kamikaze attack aircraft crashes into a US naval warship, May 1945. , officially , were a part of the Japanese Special Attack Units of military aviators who flew suicide attacks for
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 0xf114e49d61b1f3480b0ebace64947eb391ca8e16b7cf9998ec7774bebfcce0ba. Chain 2 (Bitcoin): anchored in block 953936 (2026-06-16T11:24:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/201ac086-22a6-4cb5-b57e-dc6ae12a8a06.json and https://artists.proofprofile.net/proofs/artist/201ac086-22a6-4cb5-b57e-dc6ae12a8a06.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).