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 0x97b7702363c1b47aaa2c0fd5d5160b736047d2dc8da98ee41233fea98b78e6d9. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc36bf17-6a59-4f72-82aa-006211b85ada.json and https://artists.proofprofile.net/proofs/artist/fc36bf17-6a59-4f72-82aa-006211b85ada.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Haydn: Sinfonie... Quartetto d'Archi... (Musica Classica - I Capolavori...)
Dmitri Shostakovich, Sergei Rachmaninoff: Trio & Quartetti... (Musica Classica - I Capolavori...)
Dvorak / Haydn / Shostakovich: String Quartets
Bambini: I bambini fanno ooh... (Viva la pappa col pomodoro)
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 0x3af30ce50870eaa65a7b7ad07e3349b9151f179c54b6f5351ed4b22715784b9f. 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/ITS040600756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e5ee4e1faa0acc8f3ce84c781a55fe100cb99a2c5e7d50ce1cc45596661a1f. 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/ITS041200171.
Le 10 fiabe per bambini più belle di sempre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc46ed7c8607e4569a67f51be3be2aa7b2860c58e7da6d3d0b827ade777d0b6b. 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/ITS040500364.
Orchestra I Virtuosi Dell'ensemble Di Venezia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf643ab28882488b3426fea16e7d6dd9f3bd0485e31759638cc1f548c3664abd4. 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/ITS040500754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc7ee074be995047e8d6120dbdfce8674c949fe11cffb90fd5ecd447eb97f6f. 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/ITS040001691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8095a15fecab019bc1e8926d6c16686cad77f21051d33552da60a7155b9de5. 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/ITS041200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bf2e1b8b853d5c20bc09be8532f4ffe4323dde27d63c6d28ec0e1bca2bc784. 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/ITS040500356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9997ea66392163cda0d3f70dae292b6e25ab6b62a53f4252fb43270a33e04651. 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/ITS041200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e5ee4e1faa0acc8f3ce84c781a55fe100cb99a2c5e7d50ce1cc45596661a1f. 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/ITS041200171.
Membri Dell'Accademia Della Magnifica Comunita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b6fd5a67f9d3735838ded177b2e881d9a5f75a4dc293aaa68497a71d476482. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/ITS040500755.
Classical Music Capitals of the World: Prague
Suite for Violoncello Solo No. 1 in G Major, BWV 1007: I. Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579d5084d238e85c4280594c3290490dfd0d6bfa7608284f1a04aaf52d9372b7. 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/DEA580600612.
Underrated Classical: 3.5 Hours of the Greatest Classical Music You Should be Listening to, Volume 1