1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x5bce9dec3d7ea609df30dbd364a3c08326e876d764c136ec60fd904d9f8b50f9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f3bdec5-ab79-48fb-8863-5c795bf893d3.json and https://artists.proofprofile.net/proofs/artist/3f3bdec5-ab79-48fb-8863-5c795bf893d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2a1f5b1ee6c3a344387c9ab1ac137554d29c190d1431a27f7b40a6ef60cd81. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COF019400572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b88e9ff75fa5278c958a919162f7b7a76ddf5e1516c02bc7a6dcea2e8cedba. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:28:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COF019100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0532e56dda7915f1595e0f3f2f97f3ec7259588e644eb3255125d743c7df774e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COF019400525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43be66f8cf3aaba2b24fcc38e134a35839857f184dd48b27312f34138911dc8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COF019501677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918f89e7d1882fcda7a45759bd179fdaef0f1324e8ed5e6df77eb826e98eaf48. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COF019300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13477351d0b4df19227507a6c00ff136a0655a0767fd28a795d56f9bab074db2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G1815663.
El Santo Cachón / Soka al Soko / Todo el Mundo Necesita un Beso / en Mi Pensamiento / Te Necesito / Bailando Bailando / Muñeca Linda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078d98c7f799050236ba66bdf08520b264f273b04dac8571fb323b35a1cd5ff1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G1815678.