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 0xc6af0c9d103dd0b552d8fbfa780eaa00c5313366c8735b496afa592d8afe6f16. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c257593-50e6-4084-80fe-66899441a2d9.json and https://artists.proofprofile.net/proofs/artist/1c257593-50e6-4084-80fe-66899441a2d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
only hanging out cause i'm lonely (acoustic)
Hopelessly Devoted To You - Spotify Single
{"copyright_id":"0x042cdd6e85edb9b985441598db7396bf0f36056f9cbedfdd3072a2158c58cae1","isrc":"KRA112400001","name":"HALF SOBER","registered_at":"2026-06-07T06:38:18Z","spotify_id":"6oZDiJJbHcaBM1NgWSPpYY","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 0x042cdd6e85edb9b985441598db7396bf0f36056f9cbedfdd3072a2158c58cae1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6oZDiJJbHcaBM1NgWSPpYY.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/6oZDiJJbHcaBM1NgWSPpYY.
{"copyright_id":"0x042cdd6e85edb9b985441598db7396bf0f36056f9cbedfdd3072a2158c58cae1","isrc":"KRA112400001","name":"half sober (with Alex Porat)","registered_at":"2026-06-07T06:38:18Z","spotify_id":"0qX2OWJlT7Nfec9RUVua9S","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042cdd6e85edb9b985441598db7396bf0f36056f9cbedfdd3072a2158c58cae1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0qX2OWJlT7Nfec9RUVua9S.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/0qX2OWJlT7Nfec9RUVua9S.