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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ed9d2e2bbeee6fbb44fcd6960cbb459280ced018fbadcf31bbe78e9842bcdf. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f47490e7-2dff-4932-9b5f-1e85e9a0c6d2.json and https://artists.proofprofile.net/proofs/artist/f47490e7-2dff-4932-9b5f-1e85e9a0c6d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Missa Sancti Hieronymi: I. Kyrie. Allegro moderato
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a96bc4a14371e7680c0ee8115875c6f59173340eae51cab3e2f9839a5ac7cfd. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SEAEI9759010.
Missa Sancti Hieronymi: II. Gloria. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb661e495101fcd8929bda039c76bdbcd99064ed19fe11b241ddd64b1eaa209b. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/SEAEI9759020.
Missa Sancti Hieronymi: III. Gloria. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe728dca8d91309b05b5c7203d4a46873c75a6e493902e1e2aa5285cb10ddd48b. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/SEAEI9759030.
Missa Sancti Hieronymi: IV. Credo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37b25acf55105926bad466e0baec890ed3a17e988f8ced6c461ae030cbdb6a8. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/SEAEI9759040.
Missa Sancti Hieronymi: V. Et resurrexit: Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac5e2d9d0913ebf028b075d4b71307bd706bbc9b7c4d274cfffd8638c35e50f. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/SEAEI9759050.
Missa Sancti Hieronymi: VI. Sanctus: Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9831a94dc4a602f831f42d8c085c71d074f77395607b17d42191ef433a88cb9. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/SEAEI9759060.
Missa Sancti Hieronymi: VII. Benedictus: Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42bbe613c4074d9c61b8d97b8366453aee9a328b0f9a88698cd44b860f838c9. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/SEAEI9759070.
Missa Sancti Hieronymi: VIII. Agnus Dei: Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff2a14bfce25837cc3bfb63e911498e551882b453ca006b5736f4c0aa15428d. 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/SEAEI9759080.
Missa Sancti Hieronymi: IX. Dona nobis pacem: Allegro Brioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf526ca14999dbb7b71f13663d6c600dc7877d74453b2a2e003bc7d48f4b211. 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/SEAEI9759090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa966872ffd918fbf48a278697852b7d598cc27425fe23d5ec4ae082a9a35b6c1. 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/SEAEI9759100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731058c75d7a5838a0d0c564869961b6c504f6814d476fef0e3708ab0202ebe8. 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/SEAEI9759110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d98c9aacd8124d7b38f24bb02e05fa4b897002cdf0f80e47e4753e5c003d5e. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/SEAEI9759140.
Zelenka: Melodrama de Sancto Wenceslao. Music from 18th Century Prague
Sub olea pacis, ZWV 175: Symphonia. Allegro. assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe606018002999b917985d1491f2f5c264b9a46fe3836028c3e5f0cc72c38b1. 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/CZA160101013.
Sub olea pacis, Act II, ZWV 175: Aria. Allegro. Angelicae mentes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f57bb0e4c3168a41263bd60b151af4c9f3600f2064c4f06554e95907389aa1d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CZA160120013.
Zelenka: Sub olea pacis et palma virtutis
Sub olea pacis et palma virtutis conspicua orbi regia Bohemiae Corona, ZWV 175: No. 1, Symphonia. Allegro assai
Beethoven & Méhul: Symphonies No. 1 sur instruments anciens
Mozart and Vent: Don Giovanni, Die Entführung aus dem Serail (Transcription for Wind Ensemble by Jan Nepomuk Vent)
Beethoven: Intégrale des Airs, scènes et ensembles pour voix & orchestre