1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x65e5794a8f0eec0603b8850ed2635c0912cd9c3ef5eb3aff9a93c6abf8ab26f3. 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/03a92dd1-a7b6-4377-9f60-eff2d264b2b9.json and https://artists.proofprofile.net/proofs/artist/03a92dd1-a7b6-4377-9f60-eff2d264b2b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Folk Tales, Vol. 2: British & Irish Miniatures
Berceuse, H. 8 (Version for Cello & Piano)
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1f945956e680a43c14d6cc890e1933494f9b74370d4551ce93dac1139d7f51. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5oFEpiwVg462U7fjiKJDYn.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5oFEpiwVg462U7fjiKJDYn.
Serenade, H. 23 (Version for Cello & Piano)
{"copyright_id":"0xa4993fb6f149e72e27f33b624b6c62e82a85dbfbc76641ccda862347bb325d6c","isrc":"HKI192315402","name":"Serenade, H. 23 (Version for Cello & Piano)","registered_at":"2026-06-21T20:57:10Z","spotify_id":"5RB8pcNGMQ6XB0S0W7vZSF","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4993fb6f149e72e27f33b624b6c62e82a85dbfbc76641ccda862347bb325d6c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5RB8pcNGMQ6XB0S0W7vZSF.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5RB8pcNGMQ6XB0S0W7vZSF.
Elegi, H. 47 (Version for Cello & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92e98319007b5b80716a85050fe8c1a510c9f5a0ae1639294d17a3805e29c31. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/55L7Sn4pjPGHMrB448h6m9.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/55L7Sn4pjPGHMrB448h6m9.
Salut d'amour, Op. 12 (Arr. for Cello & Piano by Anonymous)
{"copyright_id":"0x27d848e25f933c46bc2da606dd16e116b8ad2b655f93ff8c28260b4a3105cb7c","isrc":"HKI192315404","name":"Salut d'amour, Op. 12 (Arr. for Cello & Piano by Anonymous)","registered_at":"2026-06-20T04:57:16Z","spotify_id":"6QdeZyJmhkrjoVBgrv6dse","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d848e25f933c46bc2da606dd16e116b8ad2b655f93ff8c28260b4a3105cb7c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6QdeZyJmhkrjoVBgrv6dse.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6QdeZyJmhkrjoVBgrv6dse.
I'll Bid My Heart Be Still (Version for Cello & Piano)
{"copyright_id":"0x56a70bd907e6b8c41484a265264ba0b04e9ab9630a0ab9e2284e8d974f88d7b4","isrc":"HKI192315407","name":"I'll Bid My Heart Be Still (Version for Cello & Piano)","registered_at":"2026-06-07T12:49:15Z","spotify_id":"5GqmoY1CZAcd5vH2cCmNJH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a70bd907e6b8c41484a265264ba0b04e9ab9630a0ab9e2284e8d974f88d7b4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5GqmoY1CZAcd5vH2cCmNJH.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5GqmoY1CZAcd5vH2cCmNJH.
Spring Sorrow (Arr. for Cello & Piano by Julian Lloyd Webber)
{"copyright_id":"0x05d78b966833e30b1da581cb2058325a5603c8db428e4cba5dbd0f60d5bdd2f4","isrc":"HKI192315410","name":"Spring Sorrow (Arr. for Cello & Piano by Julian Lloyd Webber)","registered_at":"2026-06-25T17:02:06Z","spotify_id":"6RiNx5osZu1rb3TEOeo6xr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d78b966833e30b1da581cb2058325a5603c8db428e4cba5dbd0f60d5bdd2f4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6RiNx5osZu1rb3TEOeo6xr.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6RiNx5osZu1rb3TEOeo6xr.
4 Preludes: No. 3, The Holy Boy (Version for Cello & Piano)
{"copyright_id":"0x6255d24bf98a37e436cc811ce4ff631c97c1988add9aefb27f2eb53645c524c1","isrc":"HKI192315411","name":"4 Preludes: No. 3, The Holy Boy (Version for Cello & Piano)","registered_at":"2026-06-21T20:56:45Z","spotify_id":"2ofusNsvnBG7IlBnTinXhB","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6255d24bf98a37e436cc811ce4ff631c97c1988add9aefb27f2eb53645c524c1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2ofusNsvnBG7IlBnTinXhB.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2ofusNsvnBG7IlBnTinXhB.
The Last Rose of Summer (Arr. for Cello by Gerald Peregrine)
Down by the Salley Gardens (Arr. for Violin & Cello by Lynda O'Connor & Gerald Peregrine)
{"copyright_id":"0xa549a1c44964fa3815b97237903fbc2fceb29455ad7b9eebef7ababcb521bc83","isrc":"HKI192315414","name":"Down by the Salley Gardens (Arr. for Violin & Cello by Lynda O'Connor & Gerald Peregrine)","registered_at":"2026-06-20T03:35:30Z","spotify_id":"4uG5OeviMMghFPupLTtVzT","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa549a1c44964fa3815b97237903fbc2fceb29455ad7b9eebef7ababcb521bc83. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4uG5OeviMMghFPupLTtVzT.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4uG5OeviMMghFPupLTtVzT.
The Coolin (Arr. for Cello by Michele Esposito & Gerald Peregrine)
She Moved Through the Fair (Arr. for Violin & Cello by Lynda O'Connor & Gerald Peregrine)
The Lark in the Clear Air (Arr. for Piano Trio by Thomas Christopher Kelly)
{"copyright_id":"0x3df6fd9f48204de8ac93d7f87f960dc342ea2924599a423b8fb47714a8daf7b4","isrc":"HKI192315418","name":"The Lark in the Clear Air (Arr. for Piano Trio by Thomas Christopher Kelly)","registered_at":"2026-06-24T23:45:59Z","spotify_id":"5fwNXDT80QY2aElAuotENE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df6fd9f48204de8ac93d7f87f960dc342ea2924599a423b8fb47714a8daf7b4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5fwNXDT80QY2aElAuotENE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5fwNXDT80QY2aElAuotENE.
Songs of Travel (Version for Cello & Piano): No. 1, The Vagabond
How Can the Tree but Wither? (Version for Cello & Piano)
Songs of Travel (Version for Cello & Piano): No. 7, Wither Must I Wander?
6 Studies in English Folksong (Version for Cello & Piano): No. 3, Larghetto "Van Dieman's Land"
4 Short Pieces for Violin & Piano, H. 104: No. 2, Spring Song (Version for Cello & Piano)