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 0xdc467e975d6c1bebbb64af2059668471b9a76ab9604c5865e235a0afcc6a286b. 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/0561cbcf-ab72-4d77-8940-7a3e5a89694f.json and https://artists.proofprofile.net/proofs/artist/0561cbcf-ab72-4d77-8940-7a3e5a89694f.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 0x4004d36df6decb73d47b85af48986afa2689a6d89e20a98e67240618006f5348. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ES5631000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82db6c52826a12b193469e812afc55c3343973577937d6013259a7103e57f52. 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/ES5631000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f97410d282b4c35e8565c30a0930827bb6ff846778ccb1b3a0979df5ef50d6. 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/ES5631000037.
Acordes Para Una Cuna Con Guitarra Española
Si Tu Me Dices Ven (Spanish guitar version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbd5fbbb510c7848621fb3ccee56e7bc98193092268f2dc7825057f3c58f474. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USA561057826.
Y Todo A Media Luz (Acoustic Guitar Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d30e6487af75dbc408813c2dbac04ea91ffe2b7bc89fedbb978930d3b72730e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USA561057833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3314a6eb8828e1d8323a4ce4651138d94afc42def5913923b8ac6ed9e0ec12. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ES5631000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9126d9f45c59e8f6be123e1bd4188cde431272fdd6777023507dd31e033fb862. 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/ES5631000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd458417b947f9e0f1c08335b2990b7c8602d55a4067831fa2f767e5d966cf70e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:01Z), 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/ES5631000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e5ddabd416feb76b1bdcc18477ae0ae7ba9f78e27ac88b35639c2fcddc8ca1. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ES5631000096.
El Bolero De Ravel con Guitarra Española
Concierto De Aranjuez With Spanish Guitar
Musica Relajante Para Que Estudien Los Niños
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c647c0cd6dcc41dfcfce533b248f774284aad068e41efa3846563fd9c7a198a. 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/ES5631000030.
Study Music For Childrens. Concentration & Relaxation
Guitarra Española. Éxitos Internacionales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237e360c32fb7532c2e993dfeac88667287a1fe4b5fb49b55ce8bf427e71f2b6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5631000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230df802432aa0357bc180754c48317d152fa1a7850cf974d433d994da2d0a45. 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/ES5631000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9126d9f45c59e8f6be123e1bd4188cde431272fdd6777023507dd31e033fb862. 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/ES5631000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa2d2e6672a3f16488ec57f288b3f23333884d1e07b0c216a6fdea3b89ca780. 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/ES5631000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03a79cc62557bbcb3f1da1149050ca108d045fb214f7283521c621be8bf4226. 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/ES5631000092.
Spanish Guitar Solos. Classical Hits for Relaxation
Suave Música Con Sentimiento. Guitarra Española
Grandes Éxitos de la Música Con Guitarra Mexicana
Welcome George. Spanish Guitar Lullabies for the Royal Baby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c647c0cd6dcc41dfcfce533b248f774284aad068e41efa3846563fd9c7a198a. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/ES5631000030.
フラメンコギター エントレ・ドス・アグアス
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230df802432aa0357bc180754c48317d152fa1a7850cf974d433d994da2d0a45. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5631000089.