Azul Violeta is a Mexican band that was formed in 1988 in Guadalajara, Jalisco, by Hugo Rodríguez and César "Vampiro" López. Mixing funk and soul, these Latin rockers were signed by EMI in 1994 with t
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 0x1789d50781ed34d1958dda871a7bb1663b6eb8f76aa67e6509c35c9ca7d31da7. 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/b17d53aa-5f42-4d4a-a852-989dea2734ba.json and https://artists.proofprofile.net/proofs/artist/b17d53aa-5f42-4d4a-a852-989dea2734ba.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 0x7c19be448ecc96597bfd0381cb60071f4b8ce11a4016ab895df1e82daa39228b. 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/MXF069500969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5c7c41132357ae3e4fd9af98a3d74965b03ba5bd2307ad1215b54450142448. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/MXF069500972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3d40aff1e6d69a43613ee03b04ccec2a0932bbda6554cce292913ad714c607. 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/MXF069500977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c076ca2d9990c2274b3dd8a56b1fa6ba9a47030d5c67fc692e86d4855b70cc5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MXF069500980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc8a504b0b9b1142a987eacedff261d38b64cabf3480c1b0e197a079e2c901f. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:10:59Z), 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/MXF069600339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503f3f6cf8c4bf4aedd207e1f2fe2db4e8535e626e2269acad06960755fe97cd. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/MXF069600345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc3dc0e4012fbd01a259a2c249f3bcb7abc1599660d36d28d68ec86a2592031. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MXF069600346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cef1260e1ff8f054ed81b1749f53c5e0af2348ebd4d13ccf11fd5a82e691c0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/MXF069600347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed849dc2f32e7afa7a2b21acd093f6dbb5d0ad84726da618f932aa99c2e92908. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MXF069900491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9acfa55de9289a8cc113791f6554273bd228b17a626ed47df14cf3213f7ad3d. 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/MXF069900493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7f8c7f260c4e64c70c0c1acadc901d2dd1b940152bc9c6e256bc6d6577cb2d. 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/MXF069900494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818894eb954332e3a739860941b2a59e7d68cad5c7a7e2282344dc6ab3b1df60. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/MXF069900497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb1d10ea55464602aec4a8d31ce8737bfe6b66c401929c568646a4bc25fc75b. 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/MXF069900502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e1ce52d14458c84ea9c602d3ab6bb1ef15d60efec3e92d658dc9ef8dceb31d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/MXA591500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346be0b5f1caa75c85a5ccbc34ec93f1b7fd7e2051c16c2887ff8e09b84101a4. 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/MXA591500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc081be4fdb2b2e2353f319615e06fa1d4717a8b604c031a3ab6631b14fd2c2. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:45Z), 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/MXA591500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8bea0e5b032e9b01b6369238457e63e72a982689dc0d613d728383696596ae. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MXA591500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93859af1900112d99e6ac0e1a476484d8f7608905003a6c68c6d21610e4f3877. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MXA591500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffdee1bd8fba44f73bba0f759ef6ffde5b577f6a101e2f3c7b83adf1cfd5d91. 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/MXF019800950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffdee1bd8fba44f73bba0f759ef6ffde5b577f6a101e2f3c7b83adf1cfd5d91. 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/MXF019800950.