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 0x7e9c7a90df15b2c21c0d243a37d49b1ef27d7901b61248ee75280d5620e96321. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/add3620f-112d-48d8-a7a2-1d9a92cc6bd4.json and https://artists.proofprofile.net/proofs/artist/add3620f-112d-48d8-a7a2-1d9a92cc6bd4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Enrico Pasini: Organ Works (Three Sonatas, Cantabiles, Trittico, Suite in stile antico)
Grimoaldo Macchia: Organ Fireworks (Variations, Toccatas, Meditation, Naple Suite, Te Deum)
Handel: Organ Concertos, Op. 4 & Op. 7, Transcribed for Organ Solo by Clément Loret
Ferrari, Bacchini, Bertuletti, Macchia, Lo Muscio: Tabula Summa (Contemporary Organ Works)
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 0xfdf001eadafd74e75e4a1fa3f0ff7a1eba2d7f4f2fee4a76052dbdcaf4f5dc74. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLY331500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985b377def24e2072f8a0d130d14455c37e77d8df8bd1200e1bed657ca3a650f. 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/NLY331500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d46b74c76eda6b26ae82b33b42258852e6c60489e97697f586b5e93c025dcc. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLY331500036.
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 0xcfbfe9bc948e8f96aa637291721cac0c1ca7328efa3150102eabd74a3ac5b146. 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/NLY331500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6943a0bb024fb240839f7f6a3daf74d29df288548c5fb14fa305e011d3f02563. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/NLY331500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310bae96fc3925611d631649e22d369872b5a42c79105511d5b51c4eecb9228a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/NLY331500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54980d48be49dc96d175f1f264049783ff8b36d74ff2362b51012f0b80932d6. 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/NLY331500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9253fa576ac510d62d2c2bdd0453e414164ced15014cc08ef2649a99ec93457e. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/NLY331500045.
Komm, süsser Tod in C Minor, BWV 478 (Arr. for Organ by Carlo Francesco Defranceschi)
Grave solenne (Dall'adagio per clavicembalo)
Aurore dans l'étang (Broderies brouillonnes pour orgue)