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 0x2ca40fd8307bffa2c669dfa4ce8aae4d9b457dc65cf8d53d230f26f3013f9368. 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/4daf97d4-4e1f-47c0-8657-b4478e51ee9b.json and https://artists.proofprofile.net/proofs/artist/4daf97d4-4e1f-47c0-8657-b4478e51ee9b.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 0xf60fe8c2ded61b73f19ecebbcb93f09b233652103a2ec58cb3c2390e02767e54. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES17D2201732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd5b0f4d3b656452bb32fa7b3ff28cc706376b00d90c7c053a21958c9bdc4dd. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ES17D2201734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc276aa1133137ed426c0a417a93bc89f245575154674b151758402fcbc3fe95d. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/ES17D2201735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3b43facc49b145ef917cde26079227fcb9c75098f56a8d0475c4c15ba5cbdc. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ES17D2201739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b253ff43983a460143d59a6c08f3ae9416a4df2934315dc8cad3a5774e08e5. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/ES17D2302164.
Una història a explicar (Story of my life) [El Disc de la Marató 2023]
Una història a explicar (Story of my life) - El Disc de la Marató 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585add6fe7fa0455a75ffa877d75e0b187456203357d2633784edfbc1dfa5851. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ES17D2302165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad46a28d9ebb574fc1dc569e3858b19760ca04b8f6ca85d0f23947fb9f56a59. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES17D2402281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc76ff9491dd5b055b09b88962a6c317272979f2b90a85214d838879d06ec82. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES17D2302206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b253ff43983a460143d59a6c08f3ae9416a4df2934315dc8cad3a5774e08e5. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/ES17D2302164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4702b71a339f4e15a2d1ee9887c057257865515fb103f902fd98137d01ea9d25. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/ES17D2402299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824ae48662db2e2da1144fc1c28f17e8336c39c3843149e1665740acd36257e3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES17D2402279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4758e07f3161f86257a091c8352d37754824293ddd9df2274158555c75ed71. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES17D2402618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29744d7800d30deea9fe9a9afe4f22ba538b4200ee76a90f478a959fd52924e3. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/ES17D2502647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29744d7800d30deea9fe9a9afe4f22ba538b4200ee76a90f478a959fd52924e3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ES17D2502647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2e720e62eaae5d2ad82623756cf76dd5c17e930fccdee411a6dd2c1f10dd86. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES17D2402559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4758e07f3161f86257a091c8352d37754824293ddd9df2274158555c75ed71. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:58:04Z), 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/ES17D2402618.
Esto Es La Voz - En Directo En La Voz / 2020
La Voz 2020 - Batalla Final (En Directo En La Voz / 2020)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a0918903382b3d3f518cedad37cd722f44f79bdde4276f1853d3dae56dec6a. 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/ES5702002421.