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 0xa88fbb4c86633888c55053bf4800f0ebd7112cd034c2d3841174a54a318bb96f. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16d03dc6-c03b-44ca-8f7f-e640906e0169.json and https://artists.proofprofile.net/proofs/artist/16d03dc6-c03b-44ca-8f7f-e640906e0169.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concert for Clarinet and Orchestra in D Major
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 0xed931c51855665c0f7488a182538ae614a629f0f8de20e55f3dbba6aef74cdc9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITK601801001.
Paul-Agricole Génin: Opera fantasies for Flute and Piano
Jensen, Keller: Arie Variate e Divertimenti (19th Century Music for Solo Flute)
Kuhlau: Fantaisies & Divertissements for Solo Flute
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65d56049abe315cf4a2029ed3814daf0489e436de2aecbde06b7c3712c724d2. 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/ITK341018802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d62627e0413fb87f862619882fef8cbf633b9bd117eb6e0d3803f29184e99e. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ITK341018801.
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
Maurice Ravel: Pièce en forme de habanera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030d0f77750ee14af9ec5443f56a1da6bead740e96a8c3c4fd5b37d4a36eb4c3. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ITK341018805.
Die Entführung aus dem Serail, K. 384: "Welche Wonne, Welche Lust" (Arr. For clarinet and flute)
Don Giovanni, K. 527: "Là ci darem la mano" (Arr. for Flute and Clarinet)
Die Zauberflöte: "Der Vogelfänger bin ich ja" (Arr. for Flute and Clarinet)
Die Zauberflöte: "Du feines Täubchen, nur herein" (Arr. for Flute and Clarinet)
Die Zauberflöte: "Du feines Täubchen, nur herein" - Arr. for Flute and Clarinet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f2c32595bf693b7be5e202c1609478dcc4afbcedec6b4e1056af8071070bf3. 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/ITD542101598.
Die Zauberflöte: "Der Hölle Rache kocht in meinem Herzen" (Arr. for Flute and Clarinet)
Die Zauberflöte: "Der Hölle Rache kocht in meinem Herzen" - Arr. for Flute and Clarinet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ae2159990dd3e0b6098d8282755c4a51f1421e2a472a517e426d1355f918c5. 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/ITD542101597.
5 Gesange, Op. 71: No. 3. Geheimnis (arr. for clarinet and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b4785ff82ad33e8177d97fad4ba09274ac15b8d48bbb8b62106e4ee16c3f4c. 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/ITCC53000204.
Mercadante: Clarinet Concertos & Sinfonias concertantes
Bassi - Viviani - Panizza - Pessina - Cappelli - Ponchielli - Pillevestre: Chamber Music for Piccolo Clarinet
Le Donne Nell'Opera Italiana - The Women in the Italian Opera