thumb|Juan Peña in February 2010 Juan Peña Fernández (8 August 1941 – 13 July 2016),El Mundo also known as Juan Peña "El Lebrijano" or simply El Lebrijano, was a Spanish Gitano (Roma) flamenco musici
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 0xab59623f1ac31196f0bf1475bd834b2b1159dca71181dab5c26e92e7ae58ca73. 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/97144416-a9d8-44a2-9eb4-5e2951cf5734.json and https://artists.proofprofile.net/proofs/artist/97144416-a9d8-44a2-9eb4-5e2951cf5734.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 0x422f399dd411f156f27e2cd06f8d7a1c895eeff360ba73e4d145ac2a5b2993b2. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/ES5028500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe671a8a99e99e293e6971153ca6335369c14065ac2ba5c91205d6bdb1c9e029e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ES5028500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fbf7944a9e307a1973abbe3c52fb4ddcacc9bc010200dc2e07a85d99c036d4. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/ES5028500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee376290f89e0d804bcbb1d9b45ba95ba9c4d66244c7bd5a28de07058be7d9af. 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/ES5028500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874c981860496d0c808c8ecbe84e8dbe0557344626234088892489d139da55b7. 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/ES5028500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cd6830cc91acc4f38f47bf91b2a22948cfd919f8194ea62adf5681e979a61a. 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/ES5089700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6790481a37899422786fe2519cc7ede2af855b67471df6b4d21cf6b5baee5ef9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:10:03Z), 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/ES5089700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f0c9b125a837c5521e07e78cbfd655148a3bb3505b3ae7bb8ceac9df142d5c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:49:27Z), 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/ES5089900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284feb1d4d07746bae7f8937046bf8d5f468ca98a5e0f69892a042bf12751c38. 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/ES5089900137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93792e347c485c303802265f37c4d20e314f5b08d9cdabb97a1b4162c6c2bdd0. 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/ES5089800138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d2e643352150c963992f0551e7492faf4e0681c12783545b31cb0ef20e15ba. 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/ES5089900141.
Figuras del Cante Flamenco : El Lebrijano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e250a96b04d5487f6a15d4d02b13592100e9d68d538e8e465364806c15254a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:52:48Z), 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/ES5709903387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1a9c5a777d80c5965225ccab70958c65227ebd0c20cda06b2400bfe727f4c2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:28:22Z), 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/ES7580501428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181c53b7ad44bb0cecb3a1fe30c2e68912b3a63af3c4b7adf2bf87acbb757820. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5089900139.