The Locos are a Spanish ska punk band formed in 2005. The Locos were founded as a side project by Pipi, the backup vocalist for Spanish ska-punk group Ska-P, after the latter dissolved that same year
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 0x9ce028e2b3b7bd5de19d6b250cbe04a7e0024aef9842df7f01bbbd4b6130fefe. 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/2475f004-e15a-4a19-885f-0fb186006fef.json and https://artists.proofprofile.net/proofs/artist/2475f004-e15a-4a19-885f-0fb186006fef.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 0x5c8a54ba9d1b1308414e2370ee062a3b5f335a24c22ea53d40aa94bd8f63bce8. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/ES5020600055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6b7939cc63878217196cc87ab6f8901abe816be9c27fbd7a805f03261ec15a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ES5020600057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526c3a285cc39fb99d510ce2ecd8bb73829c9f85fa8e2d0927b196d0f8255f1a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES5020600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaa5497e577f6ccfa214465d022bf2783aa8271844a5f8b2bcb8ac274405bff. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ES5020600060.
2x1: Energía Inagotable / Tiempos Difíciles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3bf0cb5bb01b58c6e8cb1c3f553d6dbb79c981dd4e1ab2fa9d56eb4cc8bcfd. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES8240830302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ac572da762c9c6ee62a7aed1e7ae7ab46f4107db613655f75c912cb421e916. 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/ES8240830303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82931b9235d0993b0f32c4ec35d9f165b3ecb1b2751de0bf98ca4491889b702. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/ES8240830304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8e20cb8c66145a63a7c8b4fa025dc13a3931c1ddd574b638d41d4471630b22. 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/ES8240830305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9db23cc9189b5df135b5bac465c17c86774042a2079ee4d2ae16b89c2c027c. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/ES8240830307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece7a27c348de265d53859ec50b45bc556b68abeaec4ff847688832985c97902. 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/ES8240830308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33209b62f7d7aa1810fdf98114d3af98b7c4ec89ca7f4ca01ba2a1aa1d6f6f60. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/ES8240830309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b373f96046555ccf7c1cb1b54adfe58d4d24c7fa9cebf59f412b244b44eee69. 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/ES8240830310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92f354fcbcdfd16b52803526658619363719a855a8f2a1ea4cb7f55068ad96b. 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/ES8240830311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c52244c2633a1c87169326897f3d045eb9e06702d7cf3e1dee907615ac3a081. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/ES8241127901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9609d58954a1aa54da21e57a19872df06bcd4aadbc4d3d2a42fddc578066d21d. 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/ES8241127902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ea538df2f8e2cc46583027c2188e8587036f9ad40bfd27069dc4a7ac7b369c. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ES8241127903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7911a86ead9a5ff2c01a23f814670a75ff01b08284f490bc9d147c1e613cad. 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/ES8241127904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2855567b40e37c3ce970c6609e49f57d0720a69f906d9b6d5c960730fdd926. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/ES8241127908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3012ff5ea7fe41823a9f8e21318ba98a92197539963e7ac9dc6b591c55331a83. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES8241127909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab7bcd4a840a3f897b045062c824c83dccaa584a63114122cba5e7e47f536f0. 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/ES8241127910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86efe7ef178fe607c87834dec7b0b1f1b40b711a44b8f58d791f9e21fe006091. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ES8241127912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36be915210bb5411ed4193920db58f6e309567e336b7c069705782c194dabc39. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QMDA71520519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527c9ed92988a380738273aa2436926d752897e5e3902412cd90b446f1c187a8. 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/ES8241827701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2800eb034bb542e121a8d7840d6a2be276167046d540f808ebef74c09c80377. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ES8241920301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e9bb4ade846a0121880e4dc77622d0d0f42400dd958e1485de50ba08950408. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES8242241201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0414174a3d5e83ea11049220e6fa0c940c1b7a63b128bb77b6978cb3afa405. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES8242349201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51b81c2eae4ce870fb2ecbdfbf5a09146c384754fd34805ba435e6610731fc8. 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/QM4TX1879258.