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 0x155400ac833cc9ee00b32576b49b317aba969d1eb37c432a440bb2e4ccd5cf0e. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/faf19104-310f-45a7-af9d-c2e65fcb9030.json and https://artists.proofprofile.net/proofs/artist/faf19104-310f-45a7-af9d-c2e65fcb9030.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I wrote a letter to my past self and told me everything would be okay
An Old Lady, A Scarecrow And A Wizard Went Into A Bar