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 0x7c3a87424dd1fd3dc6f940253cd454bcca2a6536c22837d8fad59b3843154c7b. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70461d52-4d22-4865-9918-e7f5cc22be8b.json and https://artists.proofprofile.net/proofs/artist/70461d52-4d22-4865-9918-e7f5cc22be8b.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 0x7fe43117e190bc026b2e4833232d104fb71460e27319303fb19326d169ae42c7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/MX2831907643.
11 Mix: A Bailar la Cumbia - El Platanito - Don Diablo - El Chubasco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12749bee48b1435c48ae68182c54925b8b5a929a8f45b1a02605ad06ce3d667c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/MX2831907651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d54343f17fe484bfabcec6a81da41ce0a1accf1e441fea432cc8a55a32264a2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MX2831907657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1477b2705bb8d37035e2558a67ef8c23f51205101eabfd2e7d77ebd0842b67a3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/MX2831907683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4ebc23471fc929ca6bb90dafcdd3fb849575fae4473d4116a30ea044c257f7. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:25:24Z), 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/MX2831907684.
Mix: Todas las Cosas Bonitas - Marilú - Vagabundo - Chica Sexi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ff0b82c5e46cb7d8d5a950e3b0dcf98d6ca72ae0c5ec7f2b9b08463fb2d8a6. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/MX2831907688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df8fdcd0bc9369d0f7cdad45571c0ae71a50d799c0ccd0c845bfd5998ff6718. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MX2831907689.
Mix: Una Noche en Guaraní - Calor de Locos - Navegar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28083a6f0936f647fd6969d20737cfd651090d087051067999fc9e586a7add25. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:45:13Z), 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/MX2831907696.