thumb|Pata Negra playing at the Alcázar of Jerez de la Frontera Pata Negra is a Spanish flamenco-blues band, established by brothers Raimundo Amador (singer and guitarist, b. 1959 in Seville) and Raf
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 0x39a7afed921eb355647861c92b9bbf95062ddd45a36b76b29de18b959d74a27a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea540d8e-9d09-4a0f-8232-a46105402c78.json and https://artists.proofprofile.net/proofs/artist/ea540d8e-9d09-4a0f-8232-a46105402c78.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 0x15123dc89c561a33471cd65838c0df5e86f728e92aff2d63aaf8e2d43a47bc4a. 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/ES5709902477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe418a40306740a0bfe64482fd797c44f8d30d56d2a1e56d254c09fab32dac434. 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/ES5709902478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a1f5225e8b0072f8d43560a0a24d9671612205943f686282ea31c501572fb4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES5709902481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4b4eb36a9dedf81f4fba1465cd69e9c1a0d70fe8574438b36977799e2b3374. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:29Z), 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/ES5709902482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fc6beb93ab72e04803d5636c8cfe442a46674249917f386d40850d0a05db4b. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:50:13Z), 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/ES5709902483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6384ec6eebc6be8265021db70b98affc668ade995cd47ecf30e67b6a46e1f78e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ES5120700149.
Bajarse al Moro (Banda Sonora Original de la Película)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e35fe1f6fcf7c71d07ec01476a503ed213104f3a10f02e0639f9c0849c55f1. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ES5121100967.
Rock del Rafaelillo - De "Bajarse al Moro"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7482e79e5fb09b6e7f90d28235de6300cfa58853ecccdebf3ce6497368ddb84a. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/ES5121100974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4e07b664aecd9dcdb2c5eaa42a82bf96a60b0a18caf4c25e42ad2ea2611c6a. 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/ES5120200545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa231eb5bb8e542baea5484efe873f532f1bd1f815242275376a41132cb4f0e17. 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/ES5120800250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb581a644de4fc6d1ba0e2e1c65d2c045184f62050edc31065a49d9ad0569fae. 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/ES5120000383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66617db823ce8902885f91955e10a5a0dcc409def64a725fcd3ad5ac4b3a6169. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES5120800282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4904bf5588157aee4ed101d9c2205ef0c77d41669dd29e6a2b369888bada8476. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES5120000395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415c7f508fe51d43bffd7255bd620519cafcf55439ae381e6b0c28d8ba66f8f1. 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/ES5120800283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87d308cac4ca123e2178afc269268a9d3afc2446f07520990139e49b2f7dd2d. 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/ES5120800284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d28dc041334318c7cc3a25d9749781dbf2679c5b5555d5a87825884b77397c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ES5120800285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685b70460745f0f0a27dd527f368d9bc060e4751339994fc0606d88b478f994a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES5700300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaac1566f6f7e72863624b32f89fdcb002ec09a43e5a8656274d6aba2e550244. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ES5700300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a20b424e54b994bac4b5b3e5f1f47f09078c02aec2ff1a464e82fec39d70a0. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:09:59Z), 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/ES0509400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c758183fab5b40eb8a81107691914481e3d285ec9cb9a4ab9fb48f46c41c80. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/ES0509400106.
El Directo (16 de Febrero de 1989 en Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c218ec6a6dacab79b87e443038ed5acc1139ff445ebe11d5033463d6d9a737c. 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/ES5120200550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c5a96fa8cdc98f78ae7b000d674b6160805430b5a61db981b3068150036576. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES5029400650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc11a560b0370749abb7c791c541055ab1baec79fae8c306764f870eaa7c6d8a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:44:52Z), 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/ES5120000485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a65b91622697eebf1ab1ad5b5a9fb3c74873250e851ff1f7de33c73b615737. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/GBMA22590955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de26510a9ccc6426f0749bca669789d566e931654c530b6dbfcb682e058a289. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GBMA22590956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1a5c32fd3b823ff8b73c206f09d02508005d69e7615aa645ec44319d870c70. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GBMA22590957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0ba2aae632d776c37204c04dbd851272b4dfa9be65e12fa1d28ceea273737b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBMA22590958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7cf801f4ec741b77fa9b17cecd82886d7e10df03c85c897dabf8e9181157bb. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:53Z), 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/GBMA22590959.