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 0x1477411f4682fd568e21ee3bc3d577ef992a20810f54aeab603033b452c81970. 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/49948f2c-dab0-4dff-a091-3a0b3b9a8422.json and https://artists.proofprofile.net/proofs/artist/49948f2c-dab0-4dff-a091-3a0b3b9a8422.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rinaldo / Act 2: Recitativo: A quei sassa bramato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fa93a53c21461be3cbfbb0808da0b10c4a10976fdf9c25dbdb7ae862ed2e90. 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/GBBBB2000031.
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
Rinaldo / Act 1: Recitativo: Signor, già dal tuo senno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa362a8247ea5a85e4fca2c66ed49bdb08793197e0c437206512514313dcd817b. 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/GBBBB2000004.
Rinaldo / Act 2: Recitativo: Qual incognita forza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4100a82b49f1d52a1c36a71c068998ad0fb2c20f5b69a7de74ce6f0673ebd354. 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/GBBBB2000034.
Rinaldo / Act 2: Aria: Il Tricerbero umiliato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5213febf173cb99a582c7943a6b608fb4c288d9196a7af97c1a0ad2df589a0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBBBB2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6b71491ed74ded9a7b006cf16c4c6178143688a323127ad8be922d43f88cf6. 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/GBBBB2000007.
Rinaldo / Act 2: Recitativo: Perfida, un cor illustre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16654a08eaf2220f9cf4d07472f9db31b2ce61d3157743ba39983874ad6033f. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBBBB2000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822cb427549169ef0706c20b4f0a4c4ecd10c4c3f73e83c1651960d218a780ed. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBBBB2000046.
Rinaldo / Act 2: Recitativo: Crudel, tu ch'involasti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ec264e75504a0261397d2f91165e3f7671af6a1241fc49b40f3666a3e14be4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBBBB2000047.
Rinaldo / Act 1: Recitativo: Adorato mio sposo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862fc72e64d2eca0289897bdcc5a7e28552e592407bf8c4bf7d21497bc5de219. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBBBB2000019.
Rinaldo / Act 2: Aria: Abbrucio, avvampo e fremo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb78cd1da1c031c9060b440eb0ec4d7ee1906229cae51a16c997d47fc4b072f. 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/GBBBB2000048.
Rinaldo / Act 1: Duetto: Scherzano sul tuo volto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bb5281b1bcedbd725405d8d5b6d26dd50e775ab8cdfa0a60f0bd4dd2a680fd. 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/GBBBB2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2c30115e88db048a154437e31555ab85c5f5d8098943a1cb51e84d03613b13. 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/GBBBB2000023.
Rinaldo / Act 1: Recitativo: Ch'insolito stupore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4888dd0ddf5b72c93aafbdd68867be31fec751f18b2bf282033abf38f37a83d8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBBBB2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0d3ac08e77044d37b687a33df76b0a90941573263e560a81675f8fa140d53a. 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/GBBBB2000025.
Rinaldo / Act 1: Recitativo: Io all'ora impugno il brando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808fc690629fdd81e9d30e2cb84b70ad72e012766cf99517f4e3d493742309b4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBBBB2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf45b3acfb2239ad6456f533c10ab3968506b9633e8e060ea18068673bbcecc. 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/GBBBB2000029.
Handel: Giulio Cesare in Egitto, HWV 17, Act 1: Duetto. "Son nata a lagrimar" (Cornelia, Sesto)
Stephanie Blythe/David Daniels/Emmanuelle Haïm/Martin Isepp/John Nelson/Ensemble Orchestral de Paris
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 0xfac340d39cfcd784a7033190c1b1720dacb1ff415fc07848fdc329c1149a4df7. 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/GBAYC0900317.
Handel: Serse, HWV 40, Act 1: Arioso. "Ombra mai fù" (Serse)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239eea4ac499de1efaa19d9a965ee62c5acb6a3fe3f4fd4cec2f815b81891ef5. 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/GBAYC9800727.
Xerxes - Frondi tenere ... Ombra mai fù: Larghetto: Ombra mai fù
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239eea4ac499de1efaa19d9a965ee62c5acb6a3fe3f4fd4cec2f815b81891ef5. 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/GBAYC9800727.
Serse, HWV 40, Act I: Frondi tenere...Ombra mai fu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431d46495ce77e52bf86c8ac9041e541f0cc9355a5ceeaddfd8062c6b0de5bb2. 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/GBAYC9803743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239eea4ac499de1efaa19d9a965ee62c5acb6a3fe3f4fd4cec2f815b81891ef5. 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/GBAYC9800727.
Vivaldi: Stabat Mater in F Minor, RV 621: I. Stabat Mater dolorosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446b663f57222e170d7701e56b3fe58b91fe514ed204855d33e7fdd08166a86c. 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/GBAYC0102432.
Vivaldi: Nisi Dominus in G Minor, RV 608: IV. Cum dederit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5d80524b6ea4abf07dbc4a742dc0b43afcc821458d6a7d62751b3a65ce3093. 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/GBAYC0102425.
The Most Relaxing Vivaldi Album In The World... Ever!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad24b818cc53afb6084dac143352b4c3a9741c26d8e021be816634a07803554. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBAYC0102446.