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 0x9097abb57a2bc835ff63f108d1645ef3aade347c6ef540ed18fa71014e39acd8. Chain 2 (Bitcoin): anchored in block 954055 (2026-06-17T05:51:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43e58ea9-dde7-470c-b2ca-403f80c8b289.json and https://artists.proofprofile.net/proofs/artist/43e58ea9-dde7-470c-b2ca-403f80c8b289.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Geisser / Mazzola: Boarding / Vision One, Two and Five / Superclusters / Bela's Dream / Bungy Jump