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 0xf8d281825b5fe77bb26adbc41332b99f6ac39f75eec1510eaa00be63b3a6c0ba. 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/befc70c1-18d7-42a7-ba86-2ca36befa585.json and https://artists.proofprofile.net/proofs/artist/befc70c1-18d7-42a7-ba86-2ca36befa585.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il Trovatore / Act 2: "Mal reggendo all'aspro assalto"
Orchestra del Maggio Musicale Fiorentino
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 0x90ca137b71f3224da94289181b62c5024195518abbd156ada37d8d70c74ef0ad. 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/GBF079045213.
Verdi: Il trovatore, Act 3: "Di quella pira, l'orrendo foco" (Manrico, Leonora, Ruiz, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820228df3334db2b8f348b131bf40f0cb83128039f084b678a8405d175e23485. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAYC0103401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ad78bd60f4135feeb12835b40848e8c22e50f700d2c0f03774dbfbfd59460e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEN960130101.
Falstaff, Act I: Fulgida Alice! Amor t'offro - Quell'otre! quel tino! - È un ribaldo, un furbo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573631d9dc3ba6da801c8097d78c9959e69d3a05e34541de291a5caad5d74fff. 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/DEN960130106.
Falstaff, Act I: In due parole: l'enorme Falstaff vuole
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a2896e9ba68a1c86ad7302a4cdb37f1f53aec4a368643c75d2987518f577b7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEN960130107.
Falstaff, Act I: Udrai quanta egli sfoggia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0001e83b35ee8514c750f02258af69f3d14083d69a22c0170e913d35e438fc14. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEN960130109.
Falstaff, Act II: Vien qua ... Che chiasso! - Al ladro!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21557fa806d363d0e1bc05343f099d3f28ff21770366ce32639993b3c684f38. 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/DEN960130120.
Falstaff, Act II: C'è. C'è. Se t'agguanto! Se ti piglio!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a365b4346cee40327c7a0d04b7b5b6dd44b9072f483358a4c02b7380b898ed. 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/DEN960130121.
Falstaff, Act III: Reverenza. La bella Alice - Quando il rintocco della mezzanotte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29c68b4e2d9ccba9652aa38035002bd83f574d0b5380d624f57b84fd737fc2e. 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/DEN960130123.
Falstaff, Act III: Brava. Quelle corna saranno la mia gioia!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27a724921711d1b2c07c199842d1ab4761fa781e0daf3f04f4e4b71a86937a4. 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/DEN960130124.
Falstaff, Act III: Facciamo il parentado - FInale. Tutto nel mondo è burla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73443b7f7cdbaa6a7f9c720d3f2611f6439117636f86c139d99f1efe38d83181. 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/DEN960130133.
Verdi: Il trovatore, Act 2: "E deggio e posso crederlo?" (Leonora, Il Conte, Manrico, Ines, Chorus, Ferrando, Ruiz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bfb4a247df7c416f09119b6fd930050775d4d294fd677770d298b3d7582922. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBAYC0103385.
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
Verdi: Il trovatore, Act 3: "Manrico? ... Che? ... La zingara" (Ruiz, Manrico, Leonora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60bd8e439804f5c3de9f0e5c1c50a2b8515cdac3061527ff6c427f6cceff8a1. 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/GBAYC0103400.
Verdi: Il trovatore, Act 4: "Siam giunti; ecco la torre" (Ruiz, Leonora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a70f8293fe7b3f4000008007eaf826822c481c4d5ba659d724b60d4cf4470f. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBAYC0103404.
Falstaff, Act III: Alto là ... Chi va là? - Pizzica, pizzica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07cdcb200a099874ded73ac0886ef000637d9ed48cc263d97070b8560756644. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEN960130128.
Falstaff, Act III: Ogni sorta di gente dozzinale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0dc510b9248154818d8d9fc8cd003420624a3db89ee7db781b25a84a332ca47. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/DEN960130129.