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 0x0519cfcc1c81c70ea5097e9b2e9cc3b6e8a17f92b406128d767318825e084262. 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/8992a363-9661-4b2b-b98f-f606b010a845.json and https://artists.proofprofile.net/proofs/artist/8992a363-9661-4b2b-b98f-f606b010a845.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xe9684d093b437cda2ecc92f2dfb55ddeb83fdb85defa071fae43afdc0e546218","isrc":"USAT22217351","name":"Rock & Roll (Remix) [feat. Peezy]","registered_at":"2026-06-20T19:54:46Z","spotify_id":"3IiXrLNMp4a4fwlTCi9rLU","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 0xe9684d093b437cda2ecc92f2dfb55ddeb83fdb85defa071fae43afdc0e546218. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3IiXrLNMp4a4fwlTCi9rLU.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/3IiXrLNMp4a4fwlTCi9rLU.
{"copyright_id":"0xa15c7e0fdd806c044756e47c5f61778467a82788be61d3c5e50d321e4c56aa4c","isrc":"USUYG1448718","name":"No Manners (feat. R3 DA Chilliman)","registered_at":"2026-06-05T08:33:20Z","spotify_id":"3TBAP12UEEPb3p5wtgybIq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15c7e0fdd806c044756e47c5f61778467a82788be61d3c5e50d321e4c56aa4c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3TBAP12UEEPb3p5wtgybIq.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/3TBAP12UEEPb3p5wtgybIq.