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 0x7120304ff820126d23fcf178b3ea1dbe0bba392a54586f96c2f63af8462674ad. 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/b446852a-3e5a-4641-9d15-bdab38e83bcb.json and https://artists.proofprofile.net/proofs/artist/b446852a-3e5a-4641-9d15-bdab38e83bcb.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c740e0e06e49ff11b2adcd1123240f66c36a510b0f1e08cb99c18f85809e3b. 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/ES5021601417.
Sandunguera - Por Encima del Nivel (En Directo) - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8d94175e5b8e8a1e77c65703295d7be57aaa1e62edb7c2924039654e26928b. 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/ES5021800083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf059be20390dd5992bdc32671ce0ec70684f6481a1973a9d181ef0765f71d44f. 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/ES5021800084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15b4ba55afe5a6b1d755a7e7cd803d31e11b16b0bf1e6491d364676e25e1302. 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/ES5021600815.
Llegué por San Antonio de los Baños (with Silvio Rodríguez) - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d1a377f54f467ef88a4f62c88421ec569ffc6b5a05db2dfa8482de646a5318. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES5021800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d8e504800961cebe4b72e7aa52176c62c14a50c65117d74b7205e2825154a0. 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/ES5021601411.
El Baile del Buey Cansa'o (En Directo) - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d16f767ea2e96a67a389e7cd10327aee2671b3a22f4aeeff8b137a15e22cef. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES5021800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd064aba013ddc11cc251dc5aa106d168b832a09fd490d4842778585a45bcbf83. 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/ES5021601196.
Te Recordaremos (with Diego El Cigala) - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ac60ed4f4d34947b4ad44c91252134f6e9f418f8ee18e849e79fd669804eee. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5021601416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3424ab54f907c4779dd4a98d10c3d753c564b974c380dfabc80cdb7ed4707227. 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/ES5021800087.
El Negro Está Cocinando (En Directo) - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fb6625e9ade7e6cf88cc7222b2247d6b413311855b38594c1562587bc0c9d5. 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/ES5021800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f768e3a07f025c13cad47b2b8a5f964edb4a7e5d4ae2a0186502f395befbe8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES5021600810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85a8607202873e8412a0a16f72913772416ddc97367d670dbd67cfccda2889a. 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/ES5021601413.
Anda Ven y Muévete (En Directo) - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f58b8b1b57befb2ede31f55447690ad62f15485809a3cd3b82f0e31bbe5aae5. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/ES5021800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453b5e9d18a9e3efce39f98d1b47491924ed17ece8d683a099b1576525b3374a. 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/ES5021800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225a3a7b6440ae5ec47646def9984bd7831ec91e5ada9ddd3b23f5fa453fa23c. 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/ES5021600814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516c8e94ce8af52b2ed2beecae1701ba5fb08dceafbb006020bfed9811f08f5f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ES5021601414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfda76b909e8d7da6558ef430f5f0bf519a1522743d75cf9a7e861e38b0645ec. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES5021601194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d714c9b1a80550abb1f773fb34bf02d62002680a3bbc87e388c362fa7e5b9e9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5021800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf1bd5d1adada6748f7c72e5ee740b01ec3d6f03ab8aefbe848ab50360e36a6. 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/ES5021601232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bea3c98646588f12f8ff22fde9721af39708fb520aa5318b429455e16a2adb. 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/ES5021500921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45e628f889e1e4e03a149950e2038eb0a3b2510037e8a8f1fee6b771d6b11b3. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ES5021500920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bea3c98646588f12f8ff22fde9721af39708fb520aa5318b429455e16a2adb. 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/ES5021500921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb3f41f1643ba8ecea9907c1301ad53d03dc9948e1293511cd1b35498d79954. 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/ES5021500922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b4d14980e24e990a1408f23ae3049a35dbf279eaff8d06baaab1dd52a547f9. 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/ES5021500923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4718eb0e0d868a1f04ea66b14a5ea6863a36d2f6b2a8fdb8e55c7edfa995f5df. 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/ES5021500924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb993657f45d91a9c4f9b375c180328eceff204dd33a6562bf8579c716eb0b02. 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/ES5021500925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec8d06a82764aa9365f9f239746274902eda55263f6b077b07d7bef176604df. 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/ES5021500926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5caffdc50a906dbe87cf9c8c4a2f01a3d0cd3ad3e7bec2b85c08399be2c3d68. 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/ES5021500927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eae5eb32c4469ef39ec10318c54ed3989e52307bd36a66d620de7d911124c29. 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/ES5021500928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242230374af37de24bde843eadc99d787ec3fbbf9a1e50c4004f5458eb038468. 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/ES5021500929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b4c16a8fad39c8852f69eb98910f303365186f32d5199c1729ab4b5543bc0c. 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/ES5021500930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06249876e7bc025557b032c0ad9af495380730f2e3b091af51ba65b25646ed72. 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/ES5021500931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0667e0599609c2914777668ccc210b53245ebda648633e02fd7f083f447e55d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5021500932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c05acfbde605cf121d1e55b1eb21071904d7ee7952c235f9d50d9e92516dc28. 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/ES5021500933.
The Real Cuban Music: Son (Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a522b1647e39ae4fe80349aa4a025e6f41c37112bc1a9df18f45e2a68c9cf7. 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/ES5021600189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff59348a7a6720db54e108f0755f4f8a83550d942022158ae7180e88065a5f8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES5021600191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4718eb0e0d868a1f04ea66b14a5ea6863a36d2f6b2a8fdb8e55c7edfa995f5df. 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/ES5021500924.