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 0x5b6064a876981573bffee0ccdf35dfe75d8c94b778d60ee6d7d898b699c8a3ae. 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/ed1d4938-09da-49b4-8023-db76157c9257.json and https://artists.proofprofile.net/proofs/artist/ed1d4938-09da-49b4-8023-db76157c9257.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Down to the Beach - Hair Band Drop-Out Remix
{"copyright_id":"0x435c98a3e737e3d24bdc7cf2aa8f8e932fcf4101f6880156a8d9d8d7df80d0ab","isrc":"US83Z2018149","name":"Overtone Earth - KlangDruide Remix","registered_at":"2026-06-23T09:18:09Z","spotify_id":"0jeRRpZ6vR2Kf9qvsVzQEZ","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 0x435c98a3e737e3d24bdc7cf2aa8f8e932fcf4101f6880156a8d9d8d7df80d0ab. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0jeRRpZ6vR2Kf9qvsVzQEZ.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/0jeRRpZ6vR2Kf9qvsVzQEZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4517a1f84dbc08271c5f3b758651d51c32c40172831fe766eaca230287f2046. 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/4JhPFBnOcDSr2Muv2nFwNn.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/4JhPFBnOcDSr2Muv2nFwNn.
Overtone Earth - KlangDruide Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743094e02e7007863864b5ce12dd2c4323901903015fe62fbb24282908448484. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1SdttjFkhPxU9eGGZPoRLO.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/1SdttjFkhPxU9eGGZPoRLO.
{"copyright_id":"0x435c98a3e737e3d24bdc7cf2aa8f8e932fcf4101f6880156a8d9d8d7df80d0ab","isrc":"US83Z2018149","name":"Overtone Earth - KlangDruide Remix - Mixed","registered_at":"2026-06-23T09:18:09Z","spotify_id":"7yQp0QvdixxZUI9SSsDSxq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435c98a3e737e3d24bdc7cf2aa8f8e932fcf4101f6880156a8d9d8d7df80d0ab. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7yQp0QvdixxZUI9SSsDSxq.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/7yQp0QvdixxZUI9SSsDSxq.