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 0xdac4fcb0a1e220e94f2ee496c99b3be1040ad2862678d160d4d2632a82ead72e. 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/d98ecc51-43ae-41e2-8ecd-1740dcfe3941.json and https://artists.proofprofile.net/proofs/artist/d98ecc51-43ae-41e2-8ecd-1740dcfe3941.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soleá del Silencio (Soleá) [feat. Juan José Amador] - Single
Andando (Bulería) [feat. Ismael de la Rosa "El Bola"] - Single
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 0xd353a4c8ef1f2628ced279d303a3369455e40aa0126ce4bf94978d506358f5dd. 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/ES7731402115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f2011e7faf8513aec76c82903d6629a280d7973f27be9216ca3fa80064ab42. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES7731402116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefac0934ee351bc39f69e5d2c9380bffefc28b841aa33e87fe0d13471a786ff7. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/ES7731402117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1754d296fc62eba4483bafd36a025987a0886be96fb7bfa06ebbb55b135ded. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/ES7731402118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171e6ef0d673cce987042e7f63cd3d3a559a4f310d8f5449659a6b6a98374e42. 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/ES7731402119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829043c1383c7aad998e1bba07dad2124684d3ac3fae8be7fb421638b8ce49c4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES7731402120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f69548e8fe1def925a8dc69b3a817cce2235c4c48a3f14f521152dc4b92d760. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ES7731402121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76b0b878c3677ae2e471bc3db8f532e0ad317ad6d6699b6e67f5c886f754162. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES7731402122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c11675367832202f1aea40a5d4a11d197b2d9d6044d8ff0ed0d79ca5cd82f8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES7731402123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33acead270ab7f0f5975d9ac0e967cd04ed4ff7a022dcdb4fbe9976d12724d3d. 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/ES7731402124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a1ffa5f89e102e26f310861cb381a7613a201aea421c6d5462702f67ec1514. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ESA012076472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30017dbea912db6854a7d8579e39b60a320ecb17974df52833132a8eb950a2b. 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/QMARG2050890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74822ff841850a78fb8842ed49f7fa655725d7eef18ae5a13f397253c8f43951. 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/QMARG2050891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b27fd6bd491f1e4aefc12752de85bde0bd5b490d2443502eea956bedd82315. 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/QMARG2050892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7ef65f2d7a756effd6daddc8d4784475a7e6bcba11b59011c59cd607c4fe8e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMARG2050893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e8ffbf7e176be73e1e29c7a197bd6d7069ee9edfd65542f9b6ba37c307820b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMARG2050895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553d6b7a00d59afe21504ae1729a0106d1bda683e414aa61e10d3e1ae4ab7636. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ESA011665794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206f678ec900290d181123f9e7fd0f5a6254a1502dca2ba28d3b2dfab4ee4bfc. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QMARG2050897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a9ba597c8798748710f344c885220a00763991c4e25276f0d262dc5072c234. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMARG2050898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f98fd3ab853d57899d5d47352b373913a582d1a594f84902d974e8661f51887. 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/QMARG2050899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d3a6cd944dc0912f1f8321cbfaed6383903fe249b625f7f938e011484139f1. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QZNJY2283845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbdfea14b28ca3f614659baccc209e89a4fe5c4b09acef718fc4f2dfa2754e8. 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/ES5052000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a770ced849e88a9be6d0f52cc32dbc0d2f5c94a51e6f8f2966ae6ed9a6ad926. 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/ES5052000225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530cd564cadb81aa8dd066a6c5cc3ad2639042b28a8d4801390dcd46b1bcfb74. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/ES5052000226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9d54a6091d41c047ee8491561caf7b49519d25067fc1a06cb551ed88d043a1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/AEA0Q2067065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae38ec7cc578d59062ecf29cab83ba53bea786070acf0ed4d4d3fa8202cfd48. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/AEA0Q2067066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c555bd585ab656373cfb8b8b536e8f610877023d5e5ebf32e2df2e758db2192. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/AEA0Q2067068.