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 0x4711ea563898d454e737664ec0c67109023dbbe902f715d702d89b77771de88e. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78e0627f-58f3-4b87-8119-f1a93a0c01d2.json and https://artists.proofprofile.net/proofs/artist/78e0627f-58f3-4b87-8119-f1a93a0c01d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Janácek: Glagolitic Mass, Adagio, Zdrávas Maria & Otcenáš
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 0x2e7044e6404821e18600c496227e26d23ccabb7fbede569b0925daf58c262266. 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/GB7WZ2256609.
Grand Organ Prom (The Royal Albert Hall Organ)
Prélude et Fugue sur le nom d'Alain, Op. 7: I. Prélude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34610c065bd241b8551e7309909aad467ac454cb6626b4e5839a44bce03d8c83. 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/GBMY52005303.
Fugue sur le thème du Carillon des Heures de la Cathédrale de Soissons, Op. 12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9557df13c6a71b9d0c64035bcc774bdf76d136f6f69c9aa62cb6c2958ebc41c3. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBMY52005301.
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 0x0c8dca25e3dd618a81f21e3f9ffe8fcbc451c62817b686fc61bd3b93c8fc6873. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBMY52005302.
Prélude et Fugue sur le nom d'Alain, Op. 7: II. Fugue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b536932bc2a6dc30b0eb63cc9a4579ffedb25fa79944ab4c7eabea6797d028. 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/GBMY52005304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819a72e8d7fb59a1f10c152280ea89198ebebeb969d63435804e8f9cf71d4493. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBMY52005305.
Prélude sur l'Introït de l'Épiphanie, Op. 13
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45948f24fe5413a7eca712bf8c6071f59a2ba70d777995dea42cf40bf5c6c931. 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/GBMY52005306.
Prélude, Adagio et Choral varié sur le thème du 'Veni Creator', Op. 4: I. Prélude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5b1519d7847e39b128b302803f9cbdc59d5dc0fdceeb7eb0431c54a39ffcf9. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMY52005307.
Prélude, Adagio et Choral varié sur le thème du 'Veni Creator', Op. 4: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e759eb43fcecd2522fb5b887d57aff14e51e12a7b4b700d1265119c1acbc433. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBMY52005308.
Prélude, Adagio et Choral varié sur le thème du 'Veni Creator', Op. 4: III. Choral varié
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d26aac729ec4127ab45abeb2d2c00f100268d960bb8f6fb37e20384ecf7b72b. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMY52005309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8def76d23b1a4827b41e28b4e4c760504cda543a544720c4011596532dc90199. 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/GBMY52005310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a274ee73e4c3a70b7390c22f60f60db4780d9c41f0084d25f46e2c56d27bfb8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMY52005311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619d726e7b75979a669b9248983a9a06dadf3aca81060ee39cd67b4fe3293ba4. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBMY52005312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecd31859763e9bd8dfdef41f1242ecc27f1980833d50a19c227c8213efa6204. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBMY52005313.
Anthem: Great British Hymns & Choral Works
Chanson de Matin - Sir Edward Elgar, Works for Organ
Saint-Saëns: Organ Symphony - Poulenc: Organ Concerto
Living Concert Series: Die neue Orgel der Philharmonie Mercatorhalle Duisburg
Schumann: Works for Organ or Pedal Piano
Sir Lennox Berkeley: Voices of the Night, Symphony No. 2 - Michael Berkeley: Organ Concerto, Viola Concerto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b6a496dd50baf0a13ed563a42fe98c8b3ca6ff0e6dc870d5e85f0abbd5fb09. 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/GBAJY0019901.
Messiaen: Le banquet céleste; Les corps glorieux; Verset pour la fête de la dédicace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab56e60d0430a2a2af9673ae0cefa15da62f626c782dfaa512cc194349a108d0. 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/GBF079311350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427cd083189eae0043278d1438e8649d43c3d454cc3036529b13cd8a21a6285d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBF079311310.
Orgelstück (Fantasia) für eine Uhr in F Minor, K.608
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3a17f3c87f935591ede3a52d2998de61c628fdd5887c5924fd6d085eaea5fe. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBF079311380.
Fantasy and Fugue on "Ad nos, ad salutarem undam", S. 259: 3. Fuga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae835d71d6e07a1b5df54626fd188a97aaa7b4738013dedc7df42b4c84057467. 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/GBF079211663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20af586e476efd9025d423e59fa5ab2b94df6fd295fc57b5927d444dc0b59e5e. 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/GBF079242001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867db104151f07e6b6065f7f053887f616c1b6bec183ceba51fc5fb480fb8370. 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/GBF079242010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfb25220922ab4050e9e797337c41117ccb8da32037c692db57d975cc635d26. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF079242002.
Messiaen: L'Ascension; Diptyque; Apparition de l'Eglise éternelle
Mahler: Symphony No.9 / Poulenc: Organ Concerto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf46b1f2cbfb36779ba62cd237094ef85f3cf6a5533ba8e180fea513f30a630. 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/GBF078910403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c75fce3a877db3ae4ea01e548a4c43f6739722d3d1ac9040dc2c336273ccf2. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBF078910402.
Duruflé: Fugue sur le thème du Carillon des Heures de la Cathédrale de Soissons