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 0x1111e1dcc9666e4e8a45bcbb29d551377b8e81ae5705cb8e2c67aadb1d0385f1. 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/dead383f-0413-415f-ab5a-7375af6b606d.json and https://artists.proofprofile.net/proofs/artist/dead383f-0413-415f-ab5a-7375af6b606d.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 0x188b731ab66a796e3f01985628368537e7a0808ffebd77eb93e2c2826d5e637f. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/ES5351704656.
Este Loco Que Te Canta (Sevillanas Muy Flamencas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a743214bbbb763c9d0bfa98f8b3265e99add1b01c85c5c3547340e1cd61a7f. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/ES5351704648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d1662e1655d90f71c59f8154f336d63cd8e998e7ffaf819203c7cf92855e21. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/ES5160400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e4898b64aac3f7054adcc72349da30dad90f62ab6a0c42e1abca63bedb87b5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES5160400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239a5754e55936dbcda71269cbf4d1378dcfa61a29cc28a83bdb7d4baa4ddee7. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ES5160400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c1f5dc0e64c2f6d85df43fbd099066a7420a1e17b2be8f44b19226595a3b01. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ES5160400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15209404daa2839a04dddd868b6091cb95e06fb24389b7f5e31270d6f367e276. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES5160400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bcd42957a430eb08cc39bd7f1dc2883d720837aacafd2cf69c3a735b13891f. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/ES5160400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f7aad35b34b66d6a3ecff49879e21303f06b80a1ec65d6614c0fe98176921c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T00:05:41Z), 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/ES5160600351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5aaa88b5d759a32f0e71814553508d46f214540c6d0f099fd689267bc404fd0. 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/ES5160600353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e91fa1ff8d7e43257ceae7f82ecc3e9ea51b37dd9213250fe2d192227ee30d. 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/ES5160600357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc24e22248bed0c0588fe782903941dc48175914886bfbeddc7086aa94a3cfcc. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/ES5160600359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c20eb7b4473a536f0ed2d2a00f99ddd33b7e7a80859dda61ef72d7bfcb765f1. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/ES5160600573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb6259f2416eece44b21ed932d07d56d5eaf324b908fad1e22f9041bda849ce. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/ES5160600576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c52fafe984535e5e80ceb6f882d96176348ffaafd248cd341ca547d4409d346. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES5160600577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55cc7842706417efa588ad906c349a441471e488ed8a39166fa4adc06813565. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES5160800975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae1269566148431490b55193df2973a51673f173322e52add4fde03b309ec11. 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/ES5160800980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949274aee494ad3c7b20ac8ec4ef18ae53250f3d6ab6574dd5f2c319219fbbdc. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ES5160800982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1145eb2f8e713a744c7f2cff13f538c571091982f352a82564cc5b69c6bf75d0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5160901439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e95fb410a9a951434a442b44996860ecee83904fae63b1be89c1d685a19e89. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ES5160901441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4189a2aae0d364ea1f75414820a15193b7d5915a52e4aeed906502a072f1c6cc. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ES5160901442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1272ef244bbbeff7d77733fa55affab0f3f035b54746ea62b178c97593b54a4e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES5160901444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d333723e77a97bdc15e68827a21251e2cd4bf47df03f497486ca88510ecf2e. 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/ES6671101021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a0040981e238266ea5085d4318d413fd03b69606957e797c4761ef4fde6dd0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ES6671101025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46045cc90c571c8f1e754dc17018f540d189cc06fdaf112fd7ede604b58d9f7f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES6671101029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cf544e11d0f84657d5b350c0f76128e4cfe22ff4a08efaca400d15981c427b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES6671301608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cf1a3a1d98ca48d2ea51fa8cdaa73326a2fea708a51c3407335fc026b6a374. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/ES6671301609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80cc695af6a8177992f1d2301bd404ea72de901c12831b0a56434ea29da1d69. 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/ES6671301613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4015c643a6ad422c5ea2d15fe1588234dde0d7261cfdec9a83c2d9ed9cf831d6. 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/ES6671301615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a5c22868c8f4ab1ed5d1e1836bb95cc81d8d8dd0573c0c49169647f2894324. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES5161604342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0beadedd599d61ff753e0e466d6374dcc81b7160171707adfb204e82bc2c56a9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ES5161604347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10eda183665037a58e58f01987171be71dc19b1442f82aa817c096eba518a941. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5161604349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b4b337066997824557fc146abe22d2f54a5545e3a472a42356817d75a34f6f. 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/ES5301968702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2377a02e689b04a8dae3e1c006c0addbb0061baf17f12f632fe9630d91e8ca3. 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/ES04D2400079.
Alabanzas Rocieras "las sevillanas rocieras que hicieron historia"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8720fca9d812dc85e43d1f660a02feb1e54d7a17615123f98a85947ee3b364. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES18B1501405.
Las 40 Mejores Sevillanas de Amor Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd890cc6828fca1b2ccfc79e5ad891bcbe44529972e1ba92cd8ee65e28943fd. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ES5160800976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd269a00bed57810d7b94af29f5548aee4866c7414ee5bb90c4b10f28de615e93. 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/ES5160800973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55cc7842706417efa588ad906c349a441471e488ed8a39166fa4adc06813565. 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/ES5160800975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f443af7aa62e8ce122e0234e692f4d0821e6269e473695fe02d6ccfcfa21e4f. 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/ES04D2300071.