{"copyright_id":"0xb86fd20ce6487d0c42b309cf1ac4a5567271f3a2dbee468e646cdbea13aaa0d4","name":"Zürcher Kammerorchester","registered_at":"2026-06-11T12:20:42Z","symbol":"NIM0026551","token_address":"0x1cce4b13f0ca563ad2e1cd18a4eb36c3c8eeaddc","type":"artist","uuid":"13e2ef33-ab31-4cdf-b9c2-042abb5cf02a"}
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 0xb86fd20ce6487d0c42b309cf1ac4a5567271f3a2dbee468e646cdbea13aaa0d4. 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/13e2ef33-ab31-4cdf-b9c2-042abb5cf02a.json and https://artists.proofprofile.net/proofs/artist/13e2ef33-ab31-4cdf-b9c2-042abb5cf02a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Traditional: Danny Boy (Arr. Bateman for Solo Violin, Harp and String Orchestra)
Danny Boy (Arr. Bateman for Solo Violin, Harp and String Orchestra)
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 0x02e10f5277de82a06295ce042e15645aef05fd8e36a7ae1b59c5dfb9fe491683. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962031013 — a six-check JSON result.
Schoenberg: Notturno for Strings and Harp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bcd0d7305f8908b602522e02202f19b540f783f355147c5896de7189827ba4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961902670 — a six-check JSON result.
La magie de l'Avent - Musique féérique pour Noël
Vesperae solennes de Confessore, KV 339: Laudate Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a5a366eed04fed92fc2e61b9cff7ae2d108fd49fab914a08b20f8b700b5326. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH0041402700 — a six-check JSON result.
Dans une étable obscure: (Es ist ein Ros entsprungen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fb1ecd3a37ee23fa0d0876c124f71537640844abca2353a1ce4d012ae94eb3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH0041901512 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bcd0d7305f8908b602522e02202f19b540f783f355147c5896de7189827ba4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961902670 — a six-check JSON result.
Adoration (Version for Solo Violin and String Orchestra)
The Echoes of Women - International Women's Day 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e5c497d163b6f0a09cb6200fdb6988c16a5180aacd10edef7385acc9756d2c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962102280 — a six-check JSON result.
Recomposed by Max Richter: Vivaldi, the Four Seasons: Spring 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fff5f7d59c7349257b161b07dfe5c0af962578fcbd8e051805defc2bcf22dd0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961600750 — a six-check JSON result.
Bellini: Oboe Concerto in E-Flat Major: II. Larghetto cantabile (Transcr. for Trumpet and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2580083f6d70000b24676febf7f94b7c37a6fe3f13d5372097c6f053dcc189b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9005181 — a six-check JSON result.
Bellini: Oboe Concerto in E-Flat Major: III. Allegro alla polonese (Transcr. for Trumpet and Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af5d15b16990c17ced9901c25ea76f584b18d08b8d69176ce88138041e4f8c6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9005182 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af5d15b16990c17ced9901c25ea76f584b18d08b8d69176ce88138041e4f8c6. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC9005182 — a six-check JSON result.
Chanson de Matin, Op. 15 No. 2 (Arr. by Bateman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42de5a658e38917508cc179a7dbe719b50f6e1830f2e25b14c90457099bd1d0a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961902680 — a six-check JSON result.