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 0x68ef70fe6f2db5cacab37c25f78ce3da4759cff7f3dc02ea15c9a60da0e372da. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b25b0f66-cf24-4b9a-93a7-d63239fb1dfb.json and https://artists.proofprofile.net/proofs/artist/b25b0f66-cf24-4b9a-93a7-d63239fb1dfb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
私は最後の瞬間に明るい光を見る
Each night, I went to sleep wishing that this would turn out to be a nightmare