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 0xbcfe7b6e1ebde975f2df3e6316eed5e791741d69b12942e92383377d0bb83f9b. 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/723f992d-668c-42f1-b404-95fabd31803e.json and https://artists.proofprofile.net/proofs/artist/723f992d-668c-42f1-b404-95fabd31803e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x60697eb46c5c7e93ed4f917844a722a45f864cbc953ba01f3de6e7c4623387b9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1EXqv0Y00ypwMhZl2lwNa9.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/1EXqv0Y00ypwMhZl2lwNa9.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55802c6529883793ea2b9d2b090362c93bc9e3c46c7373732732713940cedd3b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0nspEAkkYSS9Uo2XOJQaYR.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/0nspEAkkYSS9Uo2XOJQaYR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a21a6f2771e247471654234415aeac0c794d20720f89e4f6b97f3929a8e8a2. 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/77fMScJv0fhItKFnLFA2Y9.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/77fMScJv0fhItKFnLFA2Y9.
{"copyright_id":"0xe781ab3ed38c6632bd1fdc4630c2e26ec0b5c23be22b86d4d20480c98ec9142e","isrc":"QZTAU2367254","name":"Não To Valendo Nada","registered_at":"2026-06-04T15:19:51Z","spotify_id":"5hrQJau0klz6kpd0WoNRRo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe781ab3ed38c6632bd1fdc4630c2e26ec0b5c23be22b86d4d20480c98ec9142e. 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/5hrQJau0klz6kpd0WoNRRo.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/5hrQJau0klz6kpd0WoNRRo.
{"copyright_id":"0x54eebd7901e935da9e65f28d6a807e7200f7b5aae1d124c5b1228cea46b28e97","isrc":"BX4IU2350486","name":"AGORA TU LAMENTA E CHORA","registered_at":"2026-06-25T19:44:08Z","spotify_id":"0cOc0DydGivNpT3nCXQsR1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eebd7901e935da9e65f28d6a807e7200f7b5aae1d124c5b1228cea46b28e97. 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/0cOc0DydGivNpT3nCXQsR1.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/0cOc0DydGivNpT3nCXQsR1.