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 0xd6ad300bd774df8e0de44ed8a9483a2634c454aaeaba8328e8cdad37eb4c99d6. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/add3edc4-4548-43a5-bbdd-85c2a038dfd4.json and https://artists.proofprofile.net/proofs/artist/add3edc4-4548-43a5-bbdd-85c2a038dfd4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cerha: Cello Concerto / Schreker: Chamber Symphony
Peter Eötvös: Chinese Opera, Shadows & Steine
Woher? Wohin? Mythen, Nation, Identitäten
Violin Concerto No. 2, Sz. 112: I. Allegro 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7ffac00be4556b90d1e1a21ef575afbc02a3cd82d663b0f3731caffbc361a6. 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/FRZ131209010.
Violin Concerto: I. Praeludium. Vivacissimo luminoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fc5fca9ffa448b9d5db40d163271213d97d89f77c6598b1cc5b780ee37103d. 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/FRZ131131010.
Violin Concerto No. 2, Sz. 112: II. Andante tranquillo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae5c16bbece10d58cdfb40ed42c8686cb7e4609ea72aeeb4d6611151131af65. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ131209020.
Violin Concerto No. 2, Sz. 112: III. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213e7e6d877599ef555315c8a434f8a13a4b6d24eafb8ec56c9aee084112e829. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-21T17:19:23Z), 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/FRZ131209030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f62ce8fe2cb995953ee692ca881176a421a934d2c54c2af8b68fa0d37aca4f. 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/FRZ131209050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878b317b665efb1a97fabe944b95830eafe9a380916804e983f63839b222ea1d. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/FRZ131209040.
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 0xf6c47dc0e27e7356c0d0ebfab2adccf98137843121b37be65d8ff8959774359d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ131209060.
Neue Musik kommentiert: Einführung in die Neue Musik
Mouvement (-vor der Erstarrung) (1983/84)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd68f3f5f294c51595707ace7963a0a87eb517e4eb52b7fcbcf15661f04b00f. 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/DEB339878902.
Francesconi: Let Me Bleed & Terre del rimorso
Fifty Years of Hungaroton (1951-2001) - Conductors
Gruber / Eötvös / Turnage: Trumpet Concertos
Eötvös: DoReMi, Speaking Drums & Cello concerto grosso
DoReMi, Violin Concerto No. 2: I. First Movement
Orchestre Philharmonique de Radio France
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43879600e9d5d862fb78f9bb90ef7414baf1bd4d69e31583e076f6ad1804f9c1. 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/FR05G1560700.
Speaking Drums: I. Tanzlied / Dance Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccb224d74ad8ea7ebd37b66922b3ccd3e188686c47f88e837404eb9f4e77ca7. 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/FR05G1560706.
Tod Machover: Nature's Breath & Spectres Parisiens
Gliding - Four Works for Symphonic Orchestra
Musica viva, Vol. 25: Jorge E. López (Live)
Stravinsky: Les Noces (1917 and 1923 Versions)
Jeney: Alef: Hommage A Schonberg / Apollonhoz (To Apollo) / 12 Songs
Musica Viva, Vol. 15 - Eötvös - B.A. Zimmermann - Smolka
Messages of the Late R. V. Troussova, Op. 17: No. 19, Why Did You Utter?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80a78a81fb92d46770dc1aefd315bdb4ff0aeb8e46d2f87df62d80b9ca99667. 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/HUA150816220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa798d4c216ea289b6ee3f279120b6a10a4684a8d87eeebe643c2a864db7298a4. 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/DEN960401231.
Sinfonia for 8 Voices and Orchestra: III. In ruhig fließender Bewegung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be1ac83225eb0622272b69126affec4bc2504d1e3636c078ab7a0462a135411. 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/DEN960401233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea105bda9e03b4429d1c71bb4e765faca91018a89ba0f725a8f20620f521d89. 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/DEN960401240.
Sinfonia for 8 Voices and Orchestra: II. O King
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389c6e8be43273dac3cf1bd451a3f19be76afb2b591aa80388b0c35634f3d144. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960401232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2400c983fd86947329fa47c6dff8c7a3e55ab32686a87e6201639bcd5725d813. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEN960401234.
Sinfonia for 8 Voices and Orchestra: 5. V
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447bbad2f1c3adbba248bea031b3fa3cab5c6026d26a02bfa5e750992e5652bd. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960401235.
Carter: Asko Concerto - Griffiths: What Next?