Radio Tarifa is a Spanish World music ensemble, combining Flamenco, Arab-Andalusian music, Arabic music, Moorish music and other musical influences of the Mediterranean, the Middle Ages and the Caribb
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 0xd38f46c445fe04da9016cd0d57c4174617718b7ab8a91ccdf8c5f77e32839960. 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/0cb6c91d-f134-401f-93a5-a9e6e5c9819d.json and https://artists.proofprofile.net/proofs/artist/0cb6c91d-f134-401f-93a5-a9e6e5c9819d.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 0xfc6f6921dfa5b1383ec6840e69868b9b7cbaa187b97ac480622afb8d8e4d85c3. 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/ES5029400681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2587598603870a59d37a538ca244140a5c2b8f3ab3fea57938930780f47e85d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ES5029400682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf022b46903477265288f13e19c91a5eb4fd8bd5bc1145e181862675346b41542. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T04:08:24Z), 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/ES5029400683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbf6a4884ff98a9753db058106a43f5cec76f2cf59280b684b0ed8886c7f2bd. 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/ES5029400684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2097737a0eaa9b734671f02713a3a1d98716cc85e4e65bb4ad970df61b8f675e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ES5029400685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df0a6485cb34ad5ee7dd3ea9ad8a65dc16c3517490867c190a645282e73e602. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES5029400686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dd4685e9ed79813c3b1d2972685008cad95d516921a6cb469833a125e5e617. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES5029400687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b82004f3f6af2173876b282b2e03f10feda921dc78a08abc91fea94bd597382. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:36:27Z), 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/ES5029400688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43d0805dc4b6cebe90c60350a662745132725ef0f5f2b4af39bf0da715ed71a. 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/ES5029400689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52cd698fa85757749af5d577a9def749b87c010094d37ab481490355bec6e5c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ES5029400690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfdbd8bef780aaa08592ca009837af3ff6a8d0f3b1362b677e6063bce4acfac. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:32:48Z), 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/ES5029600687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc101e174d55b8c24c526dfb7c1257a8f63af819c1741e8a32dacdad764113c2e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ES5029600688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f26d22b55d302a865a5f2f0eb67b2e7dfb3a1fc30871be11e7a956d7870ea8d. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/ES5029600689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f122fc22e7fae1904c4c587e93dd2d2760ff29e9f0a6952a0f1f8749e9093e. 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/ES5029600690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425603a825e58b6f966037237e590570b0f7a4d23a2b06729bc938544ba89a0d. 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/ES5029600691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622c38a5924df0d821964ef23a2b1bc8d5a7102249c3b41f06a236bbbba0bf84. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/ES5029600693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4e305f7e9d5cd57a16d8dcc95875893918660a29e9a5d9ff20e2b2ec6d29d8. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:00:18Z), 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/ES5029600694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5b8895a8b7b70834b9d49704d7c5eb07b83db400c48b066bc488594f4468be. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:17:43Z), 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/ES5020000536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905b773d3ffd966e77a66bb711062c812f20b570512ffd72793b7a851b26691e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ES5020000537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1792effd3d8e2a218ebeed28e0d1d52935f00cdff31a165e677eed6b05e7bbbd. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:49:14Z), 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/ES5020000540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba24953cbbc6558e338f1572e4f0062f6718a68225e037aaed7c283927c22b80. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES5020000543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891f78a7ae1bdd6abdb0bc602d1deb554a9cdb0ec2f6b778143d086569a18f21. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ES5020000545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf307a822f7454f69cdd1eaa63e55fdc8afc41f3cbc3b921dc1e7feef086623. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/ES5020200697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9caf4d698524349c9d78314e0de99c870553412b7dfd7a1824d84c775f8174aa. 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/ES5020200696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a8a9729ecd8f5d20cf084832f0915beb1c315f5e21e7dbf326b864cec1fb2d. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/ES5020200698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6223b3bb01cee6b78b7dd9fc07604b2bc300179d20625d884402712811e7f4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:21:36Z), 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/ES5020200699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b11eb7b913c8691d5aed7a2e0db3e52c36f940bbcacc1f5944778ce7be3aff. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/ES5020200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64adc0e26c5e9a87379d9d91644349d9b18422e736d8d9c1b26d2818d8f222c. 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/ES5020200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b902ecf8ca8a9c1042a213aed465b3208a3b3a5a2e12296b0825832f9691ad. 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/ES5029700728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3d99f6cfbfc7ed72cccd2e902c2f7f443488ef6ac00d31748611d85202c222. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRY392416989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee24008dbca07f00bfca0c0b1fabd796d636eee30f1fc9f4f0e506ff10c38172. 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/FRY392416990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1156ba9ea8aedb3ac4f6f6a5cc8449eba5c050d79f17df28ebeb5e34bcd107. 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/FRY392416991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe055d328408e310aac231ac34658a5d5e23c414e3045576a26512ccf58e4d01f. 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/FRY392416992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9510454857a74bd3dee4a9f61f7a3cc2d3144dd583e95cd195d5491093f0da6. 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/FRY392416993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57b4f189a3e8afd0e0dac52d5a7bc992cf7c54bcf4104e1569a5e9c57fd2504. 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/FRY392416994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17889e12cf490ddeb68166b296637d7a3fe044393bd9b14987a38ab343d73444. 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/FRY392416995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bef5372e1a5b4e5ea36cb8940494690d3df7819fbd486b2464135e0959e306. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRY392416996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514e734f398d3e324edc6f1e7e072a16c5a0e624629af4c43847ebe8a50dec62. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRY392416997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296f0f341b9798f59f585baa5332794d1e5b2611eb1a1c936cc7e2c787ec6085. 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/FRY392416998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a696ea24a5518fa6b3cd0a1839c92079c7715e9a7859265e09d1f7234329e36. 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/FRY392416999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e3698ed585e53bb74c44c56fc7dc3a6b18e0e74fbeef4256edeaa6646507c8. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FRY392417000.