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 0x4d6de1e9adef3f0f7cd1ba40a4b43928f566f35fa1e4eb5fe71ad09329d400dd. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77b04f22-3361-468e-ab41-6def3cb29566.json and https://artists.proofprofile.net/proofs/artist/77b04f22-3361-468e-ab41-6def3cb29566.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Antología (La Mujer En El Cante - Remasterizado 2015)
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 0x3458a55e2c1179a1f1f2088ddf3c7cc5360d8cb95b9bf9f1bf234e50af38be21. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES5701500171.
Romero Quédate. Romero San Juan. Un Tributo de Compañeros y Amigos a la Figura del Artista, del Amigo, del Genio y del Ingenio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ba2cf725f3398081754967aaac4be3bf9a5ba2cbd81830bb39b1114e254cef. 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/ES6670700280.
Un Loco Se Maldecía / Un Niño Lloraba: Fandangos del Gordito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c2b003dafe3fbe4b1f663ee5e233325f62a26ba8333ed678ebcd438a075fdd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES5271702906.
Nunca Fue Con la Verdad / La Experiencia: Granaína-Malagueña
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22799a75ec26cd73235d8df69ac894a47a149ab26575381fa569a23eaeba4e92. 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/ES5271702908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1deb1fcedcdab8eb5e4c9e04ecba0968c7371083327dae168547816315990e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFME1480149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb889e05b8b83242eb087ab2259fc242badbdc792bdbffba5067bf59571c4d2fe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMFME1480156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f4756f949e7a15dd048da99e2d07600c3683f99dcaadc200faa39b6a6c4e89. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES5301027472.
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
La Luz Del Entendimiento - Remasterizado 2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491f7f362777c9cd29983311e6706c088519a53c6e55a70cece1e1c5732c7437. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES5701500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9149f67e35cf344eb4b2d7da3b3e5dfdc3f03901e0a1155b0bbf70ab9a8bca9. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ES5271702902.
Sacando Cobre y Carbón / Escacena un día Cantó: Cantes Mineros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2acbc3c4d2ceec33195e9559a9466bfe305c86a0f207e27b721c1d24eabfda0. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ES5271702904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c7d9620491d70aa0b98d41921f593f50378f6d4735c4e6435c768bab9cb303. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ES5271702909.