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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008aba66c730af0099ac0bd02a2c9a5d4cbd9a80d9b768910bcf9c2642aff9d1. 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/abf1c2c7-8bf6-49c8-a419-4fde133a43ce.json and https://artists.proofprofile.net/proofs/artist/abf1c2c7-8bf6-49c8-a419-4fde133a43ce.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac87b96ed3fadcce0af49c49e6dff986ee1d627461d0749d634816f833eac05. 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/FRX282140957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e47c73ad0d6431ebb3617587fc4bd8a8b2ea0ba8d34c04e49928e3c03443c6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX452120037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4013f3b77e9d8af1b2529848334cb8f22d969217b6c805aaba1ce20adfcc08. 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/FRX452163187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129b77cf2f4aecc81c606405a50f2fbfe151adfb1c20b2dee1107fa3d6446018. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX872152363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7f1f984536f782271cc0d70c09344afa33ddf053b22c86d1e3ec83624443ee. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX872168338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13709acbc6331a3c1d9d6fde54998e8f2ad5914f007d3b0a3f16305a0565e4c2. 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/FRS182137594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c9f1893f30b37d30eef195fec334047ec44a1bd820084153666d83d885b4b2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRS182137595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2423cb075781e15bafef4e205148af2988776a21c334c4fbc1c339c9c36a6f0c. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZFYZ1961656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43a9e9908903f4c2b0fe837305e6efec878712f917dbd366a3663c758d14af9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ8LD1914837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb403e036f8b474d9fd30ca3d0dadbaba73c87f4a0fb48b23ff83515878031ce7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZES71984878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f481c3f6952ed8e922f9cb2f2cda5b541292431d03967792803a89ed16b626. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES61931001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ec64d52f1344fcd548de5a7742251b20a59c0f4e3365149d058eb30a714c4e. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/QZES91959965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4702d94296c8d132aa23d116965cb771026836a5bde77996426c83a0544fd8d1. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZ8LD1988276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2dd15f3cd4004c6ee769586c7c2cc0bf36007d2a42e2a66d5e4aad9fe970bb. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZFYY1905038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e47407f2a755c02a64ba40c659817cca71e1e2038677b73fc5210141f25049. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZ4JJ1986589.
Se Mandó a Mudar (Solo Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c9f1893f30b37d30eef195fec334047ec44a1bd820084153666d83d885b4b2. 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/FRS182137595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05be56034a17611317c4e82c7ed2aa6003949aca513ab35022042b8faa75815e. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ES5022301271.