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 0x736f77c7a5b184c6ae661c839f201b07e5530cbfad6c8b405447d862c548008a. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f762930-b09b-4a48-bc0a-1d07ac9badef.json and https://artists.proofprofile.net/proofs/artist/7f762930-b09b-4a48-bc0a-1d07ac9badef.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Les Vents Français - Music for Wind Ensemble
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 0x9932ebdf2389171f1837f1a3607c65f3ca3093b7acdee6b6d08d35a14d8b20de. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBAYC1302721 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471f5cf864a402a21f05f5b8c33ad7241385f593a8246d4307572070deea617f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBAYC1302723 — a six-check JSON result.
Ibert: 3 Pièces brèves: III. Assez lent - Allegro Scherzando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bd7317af2841c869edb24ebe98a9b2fdab1618c2520de0e53d95c0592dc9d0. 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/GBAYC1302724 — a six-check JSON result.
Ravel / Arr Jones: Le tombeau de Couperin: I. Prélude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf319e088837f7af2420361b7fca7be10e34f7b89124014ef8709c38df4c336. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBAYC1302725 — a six-check JSON result.
Ravel / Arr. Jones: Le tombeau de Couperin: II. Fugue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a07c952c7da7ffb29cdea5c20e2d7bd3462850c2d95bb7382a6260e8d4244ac. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302727 — a six-check JSON result.
Ravel / Arr Jones: Le tombeau de Couperin: III. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbe0bafea63a22d61bc314d0a8aafe2230fb0c1aa84bfba81f211cafd0d0941. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302728 — a six-check JSON result.
Ravel: Le tombeau de Couperin, M. 68: IV. Rigaudon (Arr. Jones for Wind Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf902af900fd543833849ee56cbe2f5ea14ea3c3d0902b4931d20bfb0c48d929e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302729 — a six-check JSON result.
Jolivet: Sonatina for Oboe & Bassoon: I. Ouverture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b389eeb898482979f00ff28893532c9f0feccc6705056702ad021914738999. 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/GBAYC1302730 — a six-check JSON result.
Jolivet: Sonatina for Oboe & Bassoon: II. Récitatif
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cbf2c2c57117dc01428ce3f461f860c4cb96e2b0706659448e0db88e1b99ce. 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/GBAYC1302731 — a six-check JSON result.
Jolivet: Sonatina for Oboe & Bassoon: III. Ostinato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6913e4198c9ca3c2b2e75c2419e7d605f5cef6819cee50c57acd0d5ee33bf7b8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302732 — a six-check JSON result.
Milhaud: La cheminée du roi René, Op. 205: I. Cortège
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cc9d3ba1ccfa34d4c233a9a8a86d5b01a9e0f5d4d6528cb1e786e6f9bc2523. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBAYC1302735 — a six-check JSON result.
Milhaud: La Cheminée du roi René, Op. 205: II. Aubade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16923ffd81cb40c2d3720dcb54d1e23ae29ad81078f1fe834de83b5d8a409a14. 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/GBAYC1302744 — a six-check JSON result.
Milhaud: La cheminée du roi René, Op. 205: III. Jongleurs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458bd6380659f3d9491761676fb208ca8d28c0d1419c64ddec31fdc82a99c2ff. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBAYC1302749 — a six-check JSON result.
Milhaud: La cheminée du roi René, Op. 205: IV. La Maousinglade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35127b3f6801432b173ff6fe906c46f232ba574f3524f6d710399e9fc7e414f3. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302754 — a six-check JSON result.
Milhaud: La cheminée du roi René, Op. 205: V. Joutes sur l'Arc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f828dd305dda622c5d906115f6c143c1b991f556923a9dd2e51b77d31fca09e. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBAYC1302759 — a six-check JSON result.
Milhaud: La cheminée du roi René, Op. 205: VI. Chasse à Valabre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a1a220071ab91f01c61666b0f2087180f59641be6e9e5c828aa4b8e6333ba. 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/GBAYC1302760 — a six-check JSON result.
Milhaud: La cheminée du roi René, Op. 205: VII. Madrigal-Nocturne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965ac6fcee115222a43a505bcf4f356e4fd07b41e11b5f8f4a3edf8031d76cd0. 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/GBAYC1302761 — a six-check JSON result.
Taffanel: Wind Quintet: I. Allegro con moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac002468b64157eaaf29846369c008e8883d47d15ac239a6abd50ae53899577. 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/GBAYC1302763 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16e88a183aef51756a0062d7b5156ba7893c4309e2de56fd44d71b0130e61c7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302765 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a6caffea72068ce9847458b27d34e98fb6ba6b5cc81a7b036bcefeebd82bf4. 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/GBAYC1302766 — a six-check JSON result.
Ligeti: 6 Bagatelles for Wind Quintet: I. Allegro con spirito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c08e42ab33a45aaf24754b60c95e919eba12016a9a8e49a6176f41e9bd85bd2. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GBAYC1302768 — a six-check JSON result.
Ligeti: 6 Bagatelles for Wind Quintet: II. Rubato lamentoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce91c8dff50be13d92b2c6b001fbe7501a8e371b73128db82536afdc4d04398d. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBAYC1302769 — a six-check JSON result.
Ligeti: 6 Bagatelles for Wind Quintet: III. Allegro grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2085f182cf46876c5291e975ddc75620c99a234a3ddf1ec402162a6780e364. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302770 — a six-check JSON result.
Ligeti: 6 Bagatelles for Wind Quintet: IV. Presto ruvido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc746d4a253d30f2b4a85c6902f8585868fca2c552a5ffb23aa54714d3a0ee28e. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302774 — a six-check JSON result.
Ligeti: 6 Bagatelles for Wind Quintet: No. 5, Adagio mesto "Béla Bartók in memoriam"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3688d7f7750b2f06c622d3aaa0badabdb92c96907fad29f1532110fd3281c2ab. 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/GBAYC1302780 — a six-check JSON result.
Ligeti: 6 Bagatelles for Wind Quintet: VI. Molto vivace (Capriccioso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd1c540b8220124488b84b07fcb68cd9838a659b61b028092bb0c40eb59b0f2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302794 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ac5c9856e8fdf4f2c2ef0e2c4cd5309ee0422e72b044216a37183f2a5e0e06. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/GBAYC1302795 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc018cf8ba3bf69b8c8784997cf8547552b77df4ed771f00877307f345a41b0. 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/GBAYC1302796 — a six-check JSON result.
Veress: Sonatina for Oboe, Clarinet & Bassoon: I. Allegro giocoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce110abe29b82a93aee6bd698c5420e3ff2f61f8f44b2f39ac2d03b1e1edb4d2. 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/GBAYC1302797 — a six-check JSON result.
Veress: Sonatina for Oboe, Clarinet & Bassoon III. Grave - Allegrissimo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0469fd8bb0a6e1afa4b1b589425ccc63ba6dfd4348f5f63f01ed67ed5cddefaf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302799 — a six-check JSON result.
Hindemith: Kleine Kammermusik, Op. 24 No. 2: I. Lustig. Mäßig schnelle Viertel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe3813300498e793b1a4943a1f6e0024b2dbd14fef35c32938dc9be75d56467. 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/GBAYC1302800 — a six-check JSON result.
Hindemith: Kleine Kammermusik, Op. 24 No. 2: II. Walzer. Durchweg sehr leise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43a4e39d91a131c725c5f50fdb6fb30d383fefd722105cfcc59fca4945b54c3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302801 — a six-check JSON result.
Hindemith: Kleine Kammermusik, Op. 24 No. 2: III. Ruhig und einfach. Achtel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b3f6945adc2f9ece2a31c3a3c9862cbabcf3578fa530eb5b4d8870649483e5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302802 — a six-check JSON result.
Hindemith: Kleine Kammermusik, Op. 24 No .2: IV. Schnelle Viertel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06229623f4db81316bf4235b4860990d644d2e10cc18a7386dab13f7d35c138d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC1302804 — a six-check JSON result.
Hindemith: Kleine Kammermusik, Op. 24 No. 2: V. Sehr lebhaft
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa138b4e99072b8ddeb1028a30145e63dd5f8cd8bc49fd811ff430d4d71c2d861. 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/GBAYC1302807 — a six-check JSON result.
Poulenc: Sextet for Piano and Winds, FP 100: I. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1d734099f35dff5440eba94ddcb016370a310fb1f86641c7d85236793364ed. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/GBAYC1402461 — a six-check JSON result.
Romantique - Spohr: Quintet for Piano & Winds, Op. 52: III. Menuetto. Allegretto
Romantique - Onslow: Wind Quintet, Op. 81: IV. Finale. Allegro spiritoso
Sinfonia concertante in E-Flat Major, K. 297b: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b770564cf7fd1ac11b0af042076925ba3385fae9b5bff215d183fff32eb9a13. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBAYC1800172 — a six-check JSON result.