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 0xe30a4a08022baaf7f21197222b477c132ec0a6a335623875eb0d00f7793c98c2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/337df835-d92e-4cac-ac65-0ca9812eb110.json and https://artists.proofprofile.net/proofs/artist/337df835-d92e-4cac-ac65-0ca9812eb110.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 0x82db503b094cc024ed9338b7c3bedaf658fc5123f3fd5f6800175e0e9bb7326e. 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/QZHZ62223535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7999ac421f29e8710e46ec6329debdb4c693256fe637951364dc6ebb37084e78. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:14:58Z), 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/QZHZ62223537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493cf353800035f8cc8d48fe417cef703a8e683356f9593f3db0999fedb99fda. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:55:47Z), 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/QZHZ62223539.
El Marihuano/Eloy Torralva/Ventura Hernández/ Simón Blanco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b77ac73b117925e815af81cf3508f80c7a85e25d199872b6cd1ce98e2a03455. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHZ62223545.
Rufino Salinas/La Gallinita/Luto en Tlacamama
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dab7c4865f08db06407202a2a3fbecc51e87df96e261cfe1580d4afebd1652e. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZTPX2241349.
El Corrido de Picho Alvarez/ La Muerte del Cardenal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab474071fca15e21276ed10e5d3aea56df02be479abb127062ce8bd455650995. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZW9L2262338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe972de587ae5bf9658222c10a4d212dfac49caf28f90f0c2ed1d5957f723b6ab. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US7VG2376794.
Eloy Torrealva/La Gallinita/Pedro el Chicharron
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d87289e9a4eb1f928c4b9a7c067ff03305003f43715fba2edef53d39080609c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:02:34Z), 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/US7VG2376801.
Los Donnys de Guerrero en Tierra Colorada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209c28574d66fc3af66d94c7d955a062ebb2b5ecc76348b9a8a06227e4695a50. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZTPX2316963.
El Corrido de Pancho Vasquez/El Corrido de Eligio y Vencho/El Corrido de Eligio Carmona
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554a1b0bedf95f8c4a41e9cef5bf09a9cc1e7795901c3a658e038c06a9691d1d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:26:16Z), 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/QZTPX2316972.
Corrido de Rufino Salinas/Corrido al Maestro Parra/La Muerte de la Mula Bronca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa299e527f13907b6484aa22edf0c1ed9398aea8f8a5382db9bc75be4726e0e4b. 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/QZGLM2450649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf9df720507cc2efbf688b7a180ec46016a9b9439c86626822658472e7c06e8. 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/QZGLM2450652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c74e7e1630638247cff9596b4a0b054474156ef9492d0607a19a7aed883c91. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZGLM2450654.
La Mula Bronca/Eloy Torralba/Rufino Salinas - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fa2eb3addec16aeaa4abb02aa250023ceb69ad486f023191f872231ba3cb05. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJY2409405.
Popurri Corridos: Maurilio de la Rosa/Eligio y Vencho/Pancho Reyes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae7968dab46f0b430bbbcc7e37cb9b7792a4cdc018354d22b522d296de47671. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNJY2482157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab19c2311947c884fb937b3e5dccbe9273ec436b711acc0523842ef7e00fd0e5. 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/QZGLM2581758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580d53211b1e973335aae1a8255da20d9f9f1cf5179b57a71746ada98f924ef0. 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/QZGLS2561943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325f309261df5e555131109df78c797fbc8fec87618e13966898cde5e38c3385. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNJV2542902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb00c7ec21be816e442e2c279a11d7916abb41055aee26761a3d3fa98072eed. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTPX2510778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e739dc2438a7581e27073e3efadb2b6bc613060a35e80303c688a7097685eed. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:48:19Z), 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/QZTVM2512208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ff3d400442bb3a5c10c2e00cf21f7df51d9645cc33f5c9eaf0f7d88a61261a. 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/QZTVM2593458.