1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb68764fab47555d1e05fbcf813156f4ded9e5e57dac30e8317538dbba7f2832c. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcc17a8f-21ac-4963-893e-6d906981457f.json and https://artists.proofprofile.net/proofs/artist/bcc17a8f-21ac-4963-893e-6d906981457f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Marc Eychenne: Sonate. II. Les écureuils
Marc Eychenne: Sonate. III. Rêveries Au Pied D’un Chêne
Sláva Vorlová: Miniatures. I. Allegro Giocoso
Sláva Vorlová: Miniatures. II. Moderato Con Tenerezza
Sláva Vorlová: Miniatures. III. Allegro Scherzando
Sláva Vorlová: Miniatures. IV. Andante Cantabile
Sláva Vorlová: Miniatures. V. Vivace Furbesco
Sebastián Tozzola: Paisaje Folklórico Nro. 2
Jules Semler-Collery: Légende Et Divertissement. I. Légende
Jules Semler-Collery: Légende Et Divertissement. II. Divertissement
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 → block OTSBitcoinBlock must exist at that height 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 0x35a8ab916905850b47238ec0d0760809f44ea99f68b195491c6a3eae067cfc0b. 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/ARHXW2003650.
Miniatura a la Luna 1 (Siete Octavos para Medialuna)
Fuga VII a 3 Voces - Del Clave Bien Temperado
Miniatura a la Laguna 1 (de las Gaviotas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4268f2d3a1e97b42178ed926935ef6497b379581c5095fb95881eea53351b36. 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/ARHXW2402208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99240f87626972ca0027b781bf160b18827f412062c60a96ac512e73b1e42731. 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/ARL862400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a88ec47d5f3fae8988beb3c1303c8b9edebf243260b3c88ffa67bff53a289fb. 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/ARL862400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875705424c70131a6a5fad3f6bc46e199390a5ff075f774729c9c6009b68988c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARL862400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca8c4596fd51444968fb8f9a4aa423bcf02dc2dfd35310838afcbdf36e44c54. 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/ARL862400008.