Cicatriz was a punk rock band from the Basque Autonomous Community (Spain) formed in 1983. The band was significant within the Basque Radical Rock (Rock Radical Vasco or RRV) movement. Best known f
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 0x1335b64428c2dbe35a8b5f38ca7b28d40120e913201e1bc68d77a252b6d08632. 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/73edc336-575f-4560-8a2a-da102af115fd.json and https://artists.proofprofile.net/proofs/artist/73edc336-575f-4560-8a2a-da102af115fd.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 0xebde82e582c1613c772cc9d57f56b8a26ba13e4982654f702e3fbd9383f7f45e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/ES5590602926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cf6837858945ff4114aff860b09ba97bbf4fc7f3909c6a06877f7107ea6a3c. 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/ES5590602928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a174bc00d675706ebccecaf89651925a04c4a5ca6bb56b16a2e4a2537b6911d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ES5590602930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88604030a21ddf335856e56d9c8f996d5f8dd9bc9e83e79155fbced62076324. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ES5590602931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938e47d823c55fe86ce1989a34996950dd0989b98318ed6da20c8c48df9f2470. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/ES5590602932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265fffbb65eeefe974e9711d01cf49d99ae7095f12b575dd42cf6f81b5035dd8. 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/ES5590602933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefd107a4f4b28d4dd6daff56daae87272ffee17c4bc43443a5a31fe8ee787b7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES5590602935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60be91aa54598efd76acdd44b07a7e4b2557c92ec5d96348d3653eb5e06b15f9. 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/ES5590602936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d94bdc4c5a9fad3c7cc5f02aa07e3acec630bf168d79d75b7e1703c1700b42f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ES5591101645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37a6246979ff48b8a026158fdf50879f3dd88a7c9168ab40441cad6359c1fbc. 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/ES5591101647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f92783a5a73ea7205db91419df4cbd069d66dc959937efb53003864bdf3cb31. 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/ES5591101650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5bc11b5b5cf65316218704d39462538d7c9c1b7ced8f1abcdc61a147104ad3. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ES5591101651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abd86f35559f7fa3c106be8d45c15d3174dc690832c81bfa5f609a400f81d51. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/ES5591101652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1830503feb9b105667d0a5e290b865bece8070b1ba3964e1769fbadfc017f498. 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/ES5591101674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1d931bd55446d42c65a1052d21b752873eb0158e28a8b6c71b77bac2bf1daa. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ES5591101675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b5078b9f62fbe128383e4798a8c3d041ee32c45548abe9340897a9991660d7. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/ES5591101676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34a7b96039e9030deb54fb33ad533efa974a68dfe6461a69b50c68ec8bc9f71. 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/ES5591101678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2860d96e7eee68fcb09a0e91a177ee0594d00a0370af159d3d992326ed7fbce0. 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/ES5591101680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684aa06c205c3864fa5927e3f3f96cdf18bff58a8898fdc69ea7741c0622051b. 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/ES5591101654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4428132872aeb6c9ffa5bbfef51c6c1dc6819624528fbcf723d200c954a8c1d1. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ES5591101655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc353434c6b0801b75c258f7377192087a89fe2ecc602733a09af623dcbefab. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/ES5591101656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c9f2a73e086212988c563a4c80b8ff2dd4cc224261db0115ada20452f582d1. 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/ES71G1928651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71549383683ceac3723b0eda8dc47eeab60b35c912f0beace9bbee03311db5f. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/ES5591101664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcfd70bc9589974fbdae3e2b4552f98c7ac6b3fddbcba094b40614a8f4356c6. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ES5591101667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1e333de4880e30c53a96c13305530324acbe8391b2b0386c4653f850e2f59a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ES5591101668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c504fb6fb4640e521c70fc59b692983f46ea32c3af0fea519ee7ae4d1ee9d1. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/ES71G1928653.
Black is Beltza II: Ainhoa (Soinu-Banda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9286c7646a2e1bdac9436036c258776751fd20de96258e11b5d3bdc859a054ad. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/ES5590602934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb7cd1c20cf8b61a91195f8599e05ffd5f70a966bb52fb59e4f7ecde40e3307. 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/QMBZ91577225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa93bfe4c23be22bf62ef26411de6a5f874f76e65ae7e66f38cbdfb2256bf28. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QMBZ91354504.