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 0x8177759fc1470fe167a8b2f8ca97defcd808de124c2c258d946a8d2acd0de8e2. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2fa3c4bf-d956-4e68-95a9-33d550c73c77.json and https://artists.proofprofile.net/proofs/artist/2fa3c4bf-d956-4e68-95a9-33d550c73c77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Semana Santa en Sevilla. Marchas procesionales. Disco de Oro, Vol. 1
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 0x0b66ed085457ff10579dee877a7657510588c2d81480d5b1d0fb6832341bb779. 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/ES5161101665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43ade039ea6202ece5293aa3e11191de55f47ec848b0950b378a1e88b475028. 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/ES5161302096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee57118ca7920b7fc0dc85218bea6ad26bc8572daad092808dac8b85a450e75. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES5161101654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc237d176e14af301d36550a91545d2eb982de57a8a99885e1d65e1dfa0bfaa. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/ES5161302097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2abf41fa9a29ba4a31f25ddfde8781c1358a1ea55776b7dfe42b67274f9dfc. 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/ES5161302098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf8add4c1255359421602623abec6c8995d368a7fc310bb3730f75c790cd825. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ES5161101650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067eb3cbfe37d276e24f36d037d880e22f78e2eaf84c05b9b224170d42370e68. 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/ES5161101648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7555eae6d02967bce4c50114b15420fc1722f1556a65d215169fe3278ea5a292. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES5161302085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05bc7cab8b2115e9d4c1c16b2c689c36eb422203eaa7b5ebb61bc1d6a851e1e. 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/ES5161302086.
Banda de Musica del Regimiento Soria Nº 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc357abf9df5cefbde27729a10d4316a5712b51f56af532a72f37f0da0e54922c. 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/ES5160500209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2179668120c852fc2b9aa4004272644f1f241fdddff3f652c0ed0023d0fece78. 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/ES5161101652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a7747702db6b7682bd411e455b2cb5822fb33f633fc253f070a23b6c288271. 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/ES5161201740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45c231135141efc69f3686c7cec5ef06a78c81989fed0cd81e22ec606eec3b7. 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/ES5161302087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7168ae0c744aeb03e188c04e341a97617d16634d91e0505c0be5be0a9e05273. 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/ES5161101656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c80c619c02e1ccc09b7db110d92cb675a6fa8e0b870a5fb5418c487ab54b4f1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:33:12Z), 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/ES5161301935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02406cb9fef3decd7527bfc531167861b4dc1ace128f8e4d40265fa7d740d4d3. 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/ES5161301936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15ccf02b2af0567437e73086d8a96503139f5a820752d1ac9e14c8e71190d39. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES5161301937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c943c705c56a201e6cee0a6d0c7e705ce3fd8981fb1540d52b8dea8512c592. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ES5161301939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095fcaa7eee6d76cf5b5ca78b4e9129fbd07a963d80f181a323371f68a5ceaf7. 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/ES5160600383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f01924ecc4c4eccfcabc5130feb567f8eeb58e4ef7dc0b168e2d05936508f69. 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/ES5160600401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41850e33632ea0984f5f97beca5326727030ef90e976ee1d7c03340cd43dddef. 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/ES5160600397.
Sevilla Cofrade, Selección de Marchas Procesionales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50406e1f96c67aa59c3a08d042a79318358157385d5fbb68f356888e49690331. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ES5161201732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e454a3fd5ad4230ae157734a8c746190e1d9eb05cb98d31e30861126f8a91f. 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/ES5161201743.