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 0x150bcded3a17337f1dbd811b51bad7b7f12c859ef0deab6cdeaf8894e7eb58b8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f2af3cb-041d-4598-90ca-e4cd860953de.json and https://artists.proofprofile.net/proofs/artist/3f2af3cb-041d-4598-90ca-e4cd860953de.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 0xbaf3b240f3a7b01b28f33fe0c1919aea625b545cda5965a586a9ff55d930255d. 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/ES5088004172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5b65bc68e60f89d64bdee209c75db597eee6ed0a95a3bd353e734d93b5bfa7. 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/ES5088003778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08a1244d3249932f8409ae9ac4f24981d5a2660c6d92b742b389920a4e223ea. 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/ES5088208144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf019698bc797afbfe3ad8308f1ecfbe1de8353dba3ddb86faabcdd0c66210f1f. 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/ES5088000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ad0b11db1e6fed90b79b48f16f749b79b8d7e76b555d9b6a11a7c52f7ac99f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5088003894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed48ca997430a0dac49146e3345672ef2289f7e51d0151cea9d1398ce134c25. 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/ES5020200442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06858994c8c2809c89d2ecafbbf84c11e2ba3c7ddc3460bc151d8bd9ec969ad. 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/ES5109900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b67c9b102ac653b80f0585eb16b5da6d2e1c55c6996ecb8e915b7431cf7796. 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/ES5028700052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dec8deacd2bfe9f1971596ec3b25f22fc65ad601ca0766a092273dc87c01c11. 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/ES5109000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe6f68992df84ad08116152b7c2192702482753aa861705bf307e9f2c836702. 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/ES5020200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229abd023846d8b830c8d3552e3a477cfae3870b739ef5d97107d71d41f1cfb7. 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/ES5020600471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5c9cbd0d557a71e17bed381fb3e930d2896446b8eaa9b9b3341ca61a412491. 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/ES5020100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b90b9aa864e86307405e3266e7a07b3ae8ccd365557fc3375a51380f3b08bda. 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/ES5119901193.
Héroes (Edición Especial 40 Aniversario)
Preferiblemente Vivos (En Directo) [Remasterizado]
Corazón de Rock and Roll (Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbca01b42aea26908d001651b0490967b1c1465b1307ed2ed67ef40543f27e7. 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/ES8650910133.
Rebeldes 1979/1985 (Las Cintas de la Buhardilla)
Esto Es Rocanrol (Edición Especial 40 Aniversario Rebeldes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec97f35351a2d059b0f81b3f05a2c8de1b00a3de0818b6909f8459932aa453e2. 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/ES5050301116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656280db2d0f8ec6b266f3497601657b4a570b5f9763fda2991bd168d0db4e12. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5050301117.
Basicamente... Rebeldes (Vol. I) / Basicamente... Rebeldes (Vol. II)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8dfca6c0144dd9a92d5820b9ea5dd014497387196745c9ed1310e21cd29127d. 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/ES5119500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094ebec75b5e15237b9d6ab9e023d964b26b84c727e0c80759a65e39e0a0713d. 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/ES5119500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c19a3ecc74a3f94e379afc702c6c9cfd0812a0f6ebc342dec044fe71e131ac6. 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/ES5119500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9fb7eece475121e57c772424e4628b241d2150fd953e2457c3328991a9b8c5. 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/ES5119500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe83de9ff908e73921573041dee2721be2c9058d396edfbb523b0d22f53a4455. 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/ES5118800097.
Corazón de Rock and Roll (Remasterizado) [Boxset]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43463b8e9b298dd91813e16d66e93e7f790281d31013e2bf9dfecc9f5b3a1fd. 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/ES5021901421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27e08e80433489fbb201116367c0584842e2541f212130a4144ba593dbec381. 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/USRC11600642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27076fa6780f759cd6a058aba80ca1f8373b7e4fc8fd98615c21721d12692e3d. 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/USSD11600112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85e5f256800bf1446d2a3aa5af4dacc3bab40fd8377bb60459b3a5371175fdb. 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/USSD11600252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5ee2d810f24837f3b8e64d685f450772d95ca538627ed5fde8e671f3a8ef63. 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/USSD11600299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2782c089ab2264dfc3ec412727f106287e3a0a9091fb6fea22cec6da0b79140. 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/USSD11600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126de992c45e82a2068e4e29963104c2abd33a31785e079990a3599084bbeee7. 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/USSD11500463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643fab47b38bff24c36641c5fa8c0393f08401431b9163d59dbb0c6650694242. 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/USSD11400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489ebfaafda51db6f6e9014a17c4b5e5695b024986fac1ae41c1c28a28087d84. 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/NLB630100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5292baedcfb3b329ebb6095e5fd130034d13634b4bd10cf5d55d3b27c2ebdfd8. 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/USSD11300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55e3cb37b83e4fdef4c7bdae763f5a8d1ddeeb4bfca9eab6ba837b60a1dd427. 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/USSD11500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9b2e322dc9a914a432c2ef37d80e2fb5092ddcf70cd08e396c8e24e000af09. 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/USSD19700576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaaa2e8289ff22b29cdd132415a541c243e97cd28ca9ef15d631cf8eaedd409d. 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/ES5021100308.