1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe7631870cd128504991e0eb64474b82f0ba1d010b1cb479567e6c21e520d24ae. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/baa478b8-2cf4-4994-b517-58618aa7ab90.json and https://artists.proofprofile.net/proofs/artist/baa478b8-2cf4-4994-b517-58618aa7ab90.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xb931afdf54a13a962b6cc134a484ab7ab8e06b76c7772fa67e2851d436f6eaf4","isrc":"RSA221600826","name":"Vodka I Martini","registered_at":"2026-06-29T15:11:35Z","spotify_id":"0B0QacTQ98u0QpIIACFNmg","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb931afdf54a13a962b6cc134a484ab7ab8e06b76c7772fa67e2851d436f6eaf4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0B0QacTQ98u0QpIIACFNmg.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0B0QacTQ98u0QpIIACFNmg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f57a01a3d0a3f531237a9f881f4ceaf5f78052d0524f6936363c7bfecd68395. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4THstLyl29ea0ynVzs6z4Y.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4THstLyl29ea0ynVzs6z4Y.