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 0x1fe1da11fc8fceeae4447f97066e0aeae4948bd6438f38cc8c08b8ba18fa04c9. 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/e87242b5-17fa-442d-a319-8a762b3d6c4d.json and https://artists.proofprofile.net/proofs/artist/e87242b5-17fa-442d-a319-8a762b3d6c4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trio Sonata for Flute, Violin and Continuo in B minor, Op. 2, No. 1, HWV 386b: 2. Allegro ma 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 0xe0b0f1442f3cb6e095a6d2e23d7afc8991809ccdffeb3e67b7cd3c928bdd8a22. 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/NLA507805702.
Trio Sonata for Flute, Violin and Continuo in B minor, Op. 2, No. 1, HWV 386b: 3. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923994175339d1c3c75f494551fa1a0561c4f0549383137b99427d91c34dafef. 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/NLA507805703.
Trio Sonata for Flute, Violin and Continuo in G minor, Op. 2, No. 2, HWV 387: 2. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b3da5505ac89c4f03b6eef55235f5eb5922be8a532d0ac21d39a8dae2cf430. 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/NLA507805706.
Trio Sonata for Flute, Violin and Continuo in G minor, Op. 2, No. 2, HWV 387: 3. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4dc1ed90f125d1b8cb29775f4d917f259ffb908b5de1135f0263a54e9f36f7. 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/NLA507805707.
Trio Sonata for Flute, Violin and Continuo in G minor, Op. 2, No. 2, HWV 387: 1. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e47cb1a2472ea852f147f42edf6dbc2b7b6fa37446cfd1ce205a32c86ff11c7. 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/NLA507805705.
Trio Sonata for Recorder, Violin and Continuo in F, Op. 2, No. 4, HWV 389: 1. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82188a2ad7f72a8704b828e30b2627da336abd00cfc7c49f705af4ac034d72d7. 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/NLA507805712.
Trio Sonata for Recorder, Violin and Continuo in F, Op. 2, No. 4, HWV 389: 2. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a79f07ab3000f0649af89fda2021f6aa7508be318b4767552a1cef6695a2d6. 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/NLA507805713.
Trio Sonata for 2 Violins and Continuo in G minor, Op. 5, No. 5, HWV 400: 5. Bourrée
Academy of St. Martin in the Fields Chamber Ensemble
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b699ec9775bd28e661aa4e99160500444997d105e3d4ed21a11a06a2bd879c. Chain 2 (Bitcoin): anchored in block 959981 (2026-07-28T14:27:50Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507805757.
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
Bach, JS: Brandenburg Concerto No. 6 in B-Flat Major, BWV 1051: I. —
Bach: Brandenburg Concertos - Orchestral Suites
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb05be370636498623cfd43aa7f25f6cf7d983405e28ec3ec909cc5dc2f106ea. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:11:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8500669.
Brandenburg Concerto No. 6 in B-Flat Major, BWV. 1051: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677ae561ba9397220b2ebc711b3271e09cadeb8f63f2cb99cd7e6b6c51f1ded9. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBAYC8500671.
Trio Sonata for Flute, Violin and Continuo in B minor, Op. 2, No. 1, HWV 386b: 1. Andante - Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17700b8fdae7098e13913531ae29cb693ac68af32749a1f83ad2c248a55b071. 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/NLA507805701.
Trio Sonata for Flute, Violin and Continuo in B minor, Op. 2, No. 1, HWV 386b: 4. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16167a50a8aff8139493d1dc3fc5d723dd65def261fd877dccfa7ef1b54dd136. 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/NLA507805704.
Trio Sonata for Flute, Violin and Continuo in G minor, Op. 2, No. 2, HWV 387: 4. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaa1c54416a0933a4ac86c06f984479b8b79d50f350f9a3f3e47cbd95fc4c1e. 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/NLA507805708.
Trio Sonata for 2 Violins and Continuo in B flat, Op. 2, No. 3, HWV 388: 1. Andante - Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc546f446a80e250f30006600ee82bd7c0a58f1c0124c436c6ee38722965e49. 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/NLA507805717.
Trio Sonata for 2 Violins and Continuo in B flat, Op. 2, No. 3, HWV 388: 2. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc321b46ed1a9d7cfc4f52416268dde1cf061a63f2039caa47f41c9c0968ca3e. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/NLA507805718.
Trio Sonata for 2 Violins and Continuo in B flat, Op. 2, No. 3, HWV 388: 3. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb4811ac741f24170ea2aa1db3e1f667adb5576b99dad3ecf06647d62d22fc7. 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/NLA507805719.
Trio Sonata for 2 Violins and Continuo in B flat, Op. 2, No. 3, HWV 388: 4. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5cf613e08a2c9a1aebef9282b58870d52bb8a52e08bca7d756ff352306694a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLA507805720.
Trio Sonata for Recorder, Violin and Continuo in F, Op. 2, No. 4, HWV 389: 3. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab18881b08b94906cc607d4294bfacbebc105ecc9c0f7b95193b0393ca2e1d3. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507805714.
Trio Sonata for Recorder, Violin and Continuo in F, Op. 2, No. 4, HWV 389: 4. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00de2e1c271c7414cda700c0c7da96e4a614dbfbb971ece719d55f0e41e5f043. 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/NLA507805715.
Trio Sonata for Recorder, Violin and Continuo in F, Op. 2, No. 4, HWV 389: 5. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72383d32792aceb6148ef66ad654a0bea6dfbc28394fccd31689cd17e74709b7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507805716.
Symphony No. 6 in D Major, Hob. I:6 "Le Matin": 1. Adagio - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b52e96bd1669a457b10bc42233d6b503e2025e3bd8530bbc3040e233b1e450. 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/NLA507917901.
Symphony No. 6 in D Major, Hob. I:6 "Le Matin": 2. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c59f1fb1f9b4622408ff373ecbb36f37c78b896383fc41060cb07f8814d275. 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/NLA507917902.
Symphony No. 6 in D Major, Hob. I:6 "Le Matin": 3. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64aa6b50ce2ffe0e7f3ccd8948a8f9194186f5d20988faa858a0ddc0fff36f31. 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/NLA507917903.
Symphony No. 6 in D Major, Hob. I:6 "Le Matin": 4. Finale. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa95174a320b8ac012e527c3c48537712a1c6d076ff1b2528e70a45bb14ccb3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507917904.
Symphony No. 7 in C Major, Hob. I:7 "Le Midi": 1. Adagio - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b24c48e4ebd96d1a99c87d58df7de13c7de7956d4b9bbb41013954167836f6. 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/NLA507917905.
Symphony No. 7 in C Major, Hob. I:7 "Le Midi": 2. Recitativo. Adagio - Allegro - Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bd8ff99bb46ca2761bb383864d13d267de46494a108710e8c471ecfadaffd3. 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/NLA507917906.
Symphony No. 7 in C Major, Hob. I:7 "Le Midi": 4. Menuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b3655d57e52e3c0de524fd2e0031db3909f0903973ab4f880a535f9270535e. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/NLA507917908.
Symphony No. 7 in C Major, Hob. I:7 "Le Midi": 5. Finale. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe820bd69944cbc03776baee5e96ce7517fe9e753934f2a0007af00dcbbfe57. 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/NLA507917909.
Symphony No. 8 in G Major, Hob. I:8 "Le Soir": 1. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf8d1372087725cd9aa833b015cc54aba8ca2c30c33d2eeb4719d4f5232fc65. 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/NLA507917910.
Symphony No. 8 in G Major, Hob. I:8 "Le Soir": 2. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a7e89a87652ce00aaeeaf1c23470bf4d380a155cb68d74fd281919d8d8861c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLA507917911.
Symphony No. 8 in G Major, Hob. I:8 "Le Soir": 4. Presto "La tempesta"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6966f51341af2804af2435eea7a6addbb3086e24df4c32631dc1c314fe4302. 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/NLA507917913.