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 0xebaf3785c5bdc8f13d3747f97cbd7d8cdedc0f3116f5e68194cf07fa0e033278. 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/4ad3de2c-1599-4aff-88e7-cf950cc448d7.json and https://artists.proofprofile.net/proofs/artist/4ad3de2c-1599-4aff-88e7-cf950cc448d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Carbono 14 (Grabaciones Originales Remasterizadas)
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 0x06f11d6bf4271b0462780cb98e1bc94371797ca373afd28731cc1c8dce20e8e9. 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/ES5701400583.
2 en 1 (El Eslabon Perdido - El Tigre Guadarrama)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20896adaf354a3d7f96680a91dec18508181c8527b977919441487cf0b587e49. 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/ES5108000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e6815a2d66405e30064596eb3d0edeea14ee30afef2939f988aa9cb39c66a2. 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/DEUD91767341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3655a03b177f291adf49b288fa279e07f0cc3f212f4cb26cd6a00e368720215. 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/ES5120800226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217af309b0b54ee4e8ecc8da896a72586b3bd26122b5c76ecae453dbee10bd77. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES5120800238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33fe409a3cef027fa11eecaf2d9a7c98cbb8cad0876304719a76de390b14253. 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/ES5079700044.
Elegía al Jardin de Mi Abuela, Con una Dedicatoria y un Suspiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9bb68ee803ac8d6756b451abb4b497f661bef4f034beeabef5ecba1b576052. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5027300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170b3e69ae31f4f7e23986b059739a2b0bf32d388e3284a34b3af390530d3487. 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/ES5027300013.