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 0xb6116c51100c75705cc0102453eff0f843b78db015ce868de7e254ff2cf751ac. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fd4f802-f595-4fe3-b8bd-2db4605adc2e.json and https://artists.proofprofile.net/proofs/artist/0fd4f802-f595-4fe3-b8bd-2db4605adc2e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Have Flute Will Travel- Music by Gary Schocker
Eternal Spring- Works for 2 Flutes and Piano
Friedrich Kuhlau - Trios No. 2 & 3, Op. 86
Joachim Andersen, Opus 60 - Eleven Virtuosity Studies for Flute
Joachim Andersen: 12 Technical Etudes for Flute, Op. 63, Vol. 2
Joachim Andersen: 12 Technical Etudes, Op. 63 for Flute
Joachim Andersen: 24 Studies for Flute, Op. 21
Joachim Andersen 24 Etudes, Op. 30 for Flute Solo
24 Etudes for Flute, Op. 30: No. 8, Presto ma non troppo
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 0xecc66c5be4573a310de7047e8bfa71940b63ceeadcf26a5c3bc3fa9abaa7fc2a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USHM92008018.
Joachim Andersen: 26 Little Caprices, Op. 37
Joachim Andersen: Flute Flute Etudes, Op. 33
Flute Etudes Opus 41 by Joachim Andersen
18 Etudes for Flute, Op. 41:. 3. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1df732dc30a848103507feb3227f2ae7d30608c5c8b1ba10b884b0b3a70b4f. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USHM81921785.
18 Etudes for Flute, Op. 41: 4. Allegro animato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512335997629634110ed04754dcadc2939d2fdc06d7acb296fae7f25f536128b. 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/USHM81921786.
18 Etudes for Flute, Op. 41: 6. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155456a6d776266d4790f297f91a284c1d937366aa0ef991f49555d861ab4480. 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/USHM81921788.
18 Etudes for Flute, Op. 41: 8. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17df10cca07fe36e229d412b63cc4dded15516fcafc3dd284474a279c5e83204. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USHM81921790.
The Complete Johannes Donjon and Jacques Casterede Flute Etudes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24730dca4544843158c39290565dc4933b8c46b0407de2fff852c3b9357d1f2. 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/USHM21980507.
Flute and Piano Music by Composers of African Descent, Vol. 2
Lil Lite O Mine: Flute Music By Composers of African Descent
Flute Set for Solo Flute: movement I: Moderato con anima
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86ea9df3c918188a9fb8503dac5a00ed06ebf768c22a2dadab19e70a4a5edfb. 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/QMUZR1510107.
Flute Set for Solo Flute: movement II: Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f03c2d6e27b4117a32d9a6722cafbd1adf444a97f95822c19dcfec095fe9b8c. 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/QMUZR1510108.
Flute Set for Solo Flute: movement IV: Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712251ce87d27ea971701697ba36b7e82b7881c8d76e16b451b527e0bc493a3f. 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/QMUZR1510110.
Freidrich Kuhlau: The Complete Duos Concertants for Two Flutes, Opus 87
Brazilian Butterfly Circle: Chamber Music for Flute
Take a Walk on the Wilder Side: Flute Music by Alec Wilder
Driades for Flute and Harp by Desire Emile Inghelbrecht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457602edeb489ad492daafda8294d6ad26eea39f7cea962eecef7af45337dae1. 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/QMUZR1200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa422c74fbe6253ea3a87c8e19bc0187c5fee9a1fd5b6a7b64095241fc164a0a5. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QMUZR1200071.
The Swan for Flute and Harp by Camille Saint Saens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf196800834b292cb063786f03aad4a6a283573352eab9474c906e6016cb337c4. 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/QMUZR1200073.
Meditation from Thais for Flute and Harp by Jules Massenet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63565c180c2a68938912d801351e0a3ce1caab7d15859a8ea871c3171140691c. 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/QMUZR1200074.
Twentieth Century Music for Flute & Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060705a3aa9ca849524d545d2d46ab3df12b5622adaf4b1caf131cc65044f546. 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/QMUZR1100498.