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 0x8e5a53e96d23ade4b41069d3a36488318cf3ce6f2da8d406235070891867eb83. 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/f00e24fe-a585-42e7-8726-b02dea085eef.json and https://artists.proofprofile.net/proofs/artist/f00e24fe-a585-42e7-8726-b02dea085eef.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 0x1dd79693757585c31220f0f38e16b1f8820e79a269e955e95a61d26ddfbed094. 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/ES5701300805.
Cante De La Roda De Sevilla - Fandanguillos Del Jilguero De Marchena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa3f6b1cc897c88892b99bee67b7377b8f8f6eb2fbde5217f05453b3034bdaa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5701400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa472993b853cc69b35d9bdac546d427e3ed33264af45b877236f43a474af20c6. 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/ES5701300803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe556b384b4d2937bb4bd079203953bfc0ae25e336a634c2716c0a326090b0f09. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5701400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55c72a77c3db046edaa1872a3be3eea71bb4c62640636456cb5164ef5b8dc1f. 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/ES5701400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5d4a81a5a94940938f2f41d1c93a25bae01be741dc29055c55eeea53e5b5cc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5701400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8400915ea45529b293959748282e3d0e5c6d548f145ff4cce4b7cbff820e847c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5701400115.
La Camisa Partía - Tangos Gitanos Portugueses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611282f47a5df7e937194057865bd4daef294e7b5fc3a1564fdbcd24207db404. 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/ES5701400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa36435f24f60b68e410eb8615eb80bac5e0a7abf77e8326717961f276568cb2. 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/ES5701400118.
Y Llegó Manuel, Momento Papá - Canción Nana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a71db772d8f8e4b4690c65b9a9f8e3896b94847ef830759ef019bec3b83481. 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/ES5701400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84833efa718f77b8a6e2893055c81486ca1a0b208b6ee7a86364967716ffb4f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES64E2201056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50091413a1fc185fa078faba10d5686095591586307a85e20d766bc580e21d65. 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/ES5152000388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84833efa718f77b8a6e2893055c81486ca1a0b208b6ee7a86364967716ffb4f. 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/ES64E2201056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8a8f8e0413e6f66d77084b819c3cd2c5715d7d541b4a600da707cc4588850b. 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/ES5702100034.
Yo No Te He Dado Motivos - Tientos - Remasterizada 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1824041c81e0265c2b2a335edda8c142f3d8960856d1f6b6965adc2d36026dcb. 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/ES5701200782.