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 0x504073e2745eebe90b660c622c4b4095e06a65630d2960ba7c530b643f5eeeb4. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cd01df1-0dff-4465-b15b-8ff9b5062077.json and https://artists.proofprofile.net/proofs/artist/7cd01df1-0dff-4465-b15b-8ff9b5062077.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Famous Flute Concertos. Bach, Vivaldi, Mozart, Ibert, Jolivet, Khachaturian...
Honegger: Concerto da camera: I. Allegretto amabile
Association Des Concerts De Chambre De Paris
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 0x51c15383f943e428f158a843fb1fe3962c000743dfa59166513e394eacf61f97. 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/GBAYC1502441.
Mozart: Concerto for Flute and Harp in C Major, K. 299: I. Allegro (Cadenza by Flothuis)
Orchestre de chambre Jean-François Paillard
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1a26a4ade2f71439c79c6897c11d86b569cc7f2f6de1277b1c94c71662840e. 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/GBAYC1500143.
Mozart: Concerto for Flute and Harp in C Major, K. 299: II. Andantino (Cadenza by Flothuis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8da0e4a7f87259a10c01d39a20ced1e062f8c09ab13e4db625b1cf5c4cf69ff. 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/GBAYC1500144.
Bach, JS: Violin Concerto in G Minor, BWV 1056R: II. Largo (Transcr. for Flute)
Kammerorchester des Saarländischen Rundfunks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9956375272e2bbcb8076c395513226bf18ccb876802685bd34d11675019ea26. 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/GBAYC1500239.
Bach, JS: Flute Concerto in A Minor, BWV 1041: II. Andante (Transcr. of Violin Concerto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb0562d6ab7126bcc3ba1e4a5bb68ce118d5b85d7876a9e40e9423f06c38975. 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/GBAYC1500242.
Bach, JS: Flute Concerto in A Minor, BWV 1041: III. Allegro assai (Transcr. of Violin Concerto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b76e741f5e6e15ab96d77172cddfa115eb49dd6396d388c1e5583241b8a2eca. 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/GBAYC1500243.
Telemann: Flute Concerto in C Major, TWV 51:C1: I. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1413b262f808316672e36e60f9764028e43997db30172b5e16edd35e0d52ffa0. 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/GBAYC1500244.
Handel: Flute Concerto in F Major, Op. 4 No. 5, HWV 293: I. Larghetto (Transcr. of Organ Concerto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250849bddacab3d548bfc8d293067043e06b12cd29c29e1b7171551c577877eb. 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/GBAYC1500197.
Live at the Tivoli (Official Bootleg Recordings)
O du fröhliche - Advents- und Weihnachtslieder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c784ce09f26cd96017221e8c510d3a22694ae4056da2645682547a68e24b26. 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/DEHC20834106.
Det Bedste Fra Den Danske Guldalder (The Best of the Danish Golden Age)
John Frandsen - Selected early recordings
Bentzon, N.V.: Feature On Rene Descartes / Colding-Jorgensen: To Love Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e5683203c151d4fa17dc3c37e3ed40ac8be8a99fcfca765c8035d83e350dce. 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/DKABA0600670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bffec70176be80feeab48bc8dc365425dcdce3341fb02e14e710e7bef719eea. 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/DKABA0600677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53d34ddef14d8e156e3d385a3151c04eed44b934c68f95952111eece193bb30. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DKABA0600667.
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
Anton Kontra Play Violin Concertos - The Tivoli Concert Hall Orchestra
John Frandsen Conducts the Orchestra of Royal Danish Theatre
Grieg: Piano Concerto by Eileen Joyce (Remastered 2023, Studio 1958)
Carl Nielsen: Symphony No. 3 / Clarinet Concerto / Orchestral Works
Carl Nielsen: Symphony No. 1 & 2 / Little suite for strings
Hansen, Ib: Kongelig Kammersanger (1959 - 1983)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453a714372db6e2e70da7434e2cd14ef2e93f60806674572194537158c0ee220. 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/DKAND9036108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3b36c03a2a97dacb2a46e2e3939184f132a2e9fa745827f033d4ec3407aa9d. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DKAND9036112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3351efb1b31638cc5c513b10fa31ec055261eee1d947d29c142ef63b8ba51029. 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/DKAND9036113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6d391bb48ef52c6503fd211d219856dc12eccdeee0ce0a11b04826b168e7ed. 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/DKAND9036101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd4cd5f952b2977b8baf760235bc561ddb02fe5994cfcedcdf6d1aefc7ae48f. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DKAND9036103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cc5292a18d9d2f1d09cc8b76ee16c7669471783370ea4872344cf65f5759b6. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DKAND9036111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02357c0e263575322ee3f53abc9f0d301c21d0f0e60c14396da30424bc5cc45. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DKAND9036116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5f1aef08f1c7daf6691a7ed50d719becad3c4bad7f3a052f1a93a1055ce5ba. 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/DKAND9036120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6b43bb889a7b0dd645dae55bf8d0d0fb76c9f069dbd69bd55654f5d1e3340b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DKAND9036122.
Ti danske Smaasange, FS 114: I. Jeg ved en lærkerede
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55235439a19462daed888d67f4589e526a79238a2b0724266090d8bb39aff53. 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/DKABA0601440.
Den danske sang er en ung blond pige, CNW 271
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Strophic Songs. Op. 21, Book I: III. Jens Vejmand
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2535496e28e27da5b8dd2c01c283fabcea5374339d446ba09c490f449c8133. 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/DKABA1000331.
Klavermusik for smaa og store, Op. 53, BookI: VII. Marziale
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Little Suite for String Orchestra, Op. 1: I. Präludium
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Little Suite for String Orchestra, Op. 1: II. Intermezzo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2367c46c3b1b15122cc304d910836f2ff50c1fb73bc936e66fc425478c8bb86. 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/GBAYC9500828.
Bach, JS: Flute Sonata in B Minor, BWV 1030: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ae099f02277dac8d9ca033a709745f0394223c411cc622763fd47ea5c41e21. 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/GBAYC1501041.
Poulenc: Flute Sonata, FP 164: II. Cantilena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7cbfffdf57a82fb7631cd8bbc47765aa108208c5a1992965eec77224681401. 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/GBAYC1500428.
Poulenc: Flute Sonata, FP 164: III. Presto giocoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219c62b6d5b8250d41a9d4ab4af7a3f8924de91afaff648d9c0a75d849522ec7. 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/GBAYC1500429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e04d57a992b16d711500887b402a51853a0cbd16d7e1325cd3fb7f1c599860. 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/GBAYC1500433.
Devienne: Flute Concerto No. 7 in E Minor: III. Rondo allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8236b77296637a9ecad103d2d75753ea16c3ad6b0758e16a1301af26522926cd. 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/FRZ201900538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8da0e4a7f87259a10c01d39a20ced1e062f8c09ab13e4db625b1cf5c4cf69ff. 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/GBAYC1500144.
Vild Med Dans Musik til standard- og latindanse
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe903cfbdb4578178ef7a2ca963d445d2fe32e3060a2d9ba7c10ffb7806494082. 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/DKABA0502810.
Danske Klassikere - De største klassiske favoritter
Gade: Forårsfantasi / Nielsen: Hymnus Amoris Op.12 & Søvnen Op. 18