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 0x8eaec740f25885b6c27c3881b35a2d73c42ae32d534536c6d05f425dc7777d5d. Chain 2 (Bitcoin): anchored in block 953895 (2026-06-16T05:46:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f772692-3cf4-478b-99f2-9a62a8ddc133.json and https://artists.proofprofile.net/proofs/artist/0f772692-3cf4-478b-99f2-9a62a8ddc133.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hofmann: Concerti per Flauto e Orchestra
Cambini: 6 Trii Concertanti Op. 45 per flauto, oboe e fagotto
F. & C. Doppler: The Complete Flute Music, Vol. 4
Doppler: Musique pour flûte et piano, deux flûtes et formations diverses (Vol. 2 & 3)
Doppler: Musique pour flûte et piano, deux flûtes et formations diverses Vol. 3
Sonata for Violin and Piano: II. Largo sostenuto
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 0xb85ff1bc15bc39045766c0e445a6e4acde7d36e0aec993b8f4d09c7e1ab33e21. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITUM72000045.
Suite for Solo Cello No. 1 in G Major, BWV 1007: I. Prélude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccf0c0db76f5725a1375907b9d88e1e5d9e7db38dad47c7d50f5602860099df. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEF059903351.
The Well-Tempered Clavier, Book 1: Prelude No. 1 in C Major BWV 846/1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf60d85a36f47b0a3a17fc14b971e26b1111a8461a25d1034edff329f7ca251f. 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/DEN961400701.
Suite No. 2 in B minor, BWV 1067: 7. Badinerie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf681b03adfa90180f174dc4ada1d3db56f8d7be981c7f3e8c77dc6712ca79fa. 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/NLA509308914.
Ich ruf zu dir, Herr Jesu Christ, BWV 639 (Arr. Tarkmann for Oboe d'amore & Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d95f9857147487c78b971a0fe809294035df448ba9dff7873bc4f78f5f24fc. 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/DEN120301614.
Orchestral Suite No. 3 in D Major, BWV 1068: 2. Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42a26cc42877532f91c275d7baef9dab198b2c15fb70fe03f2e01d93b54aed8. 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/NLA507712002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253de02978c2bcd5b356a4d89ccf5f451ea6c89052093b5b972b5281f2e66d51. 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/DEF059231101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb445c3d82ac3a88744ae31f2f3f5835409de1d9e42a459546db223ed84b685cb. 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/DEF059231102.
Goldberg Variations, BWV 988: Var. 12 (Canone alla Quarta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d88836774cb02423c5b1b68029c89bb00179b36a02b0f5103b58128a0fcc952. 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/DEF059231113.
Orchestral Suite No. 2 In B Minor, BWV 1067: 7. Badinerie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8231be27393683dc9d25ddc1e0d607105f9dd64af744a687ceaeee3c0957c1. 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/GBF071301650.
Orchestral Suite No. 2 in B Minor, BWV 1067: 7. Badinerie (Performed on Recorder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510622de25977e5a6b7193f582d4ddf018e73451d1482d69b2831271e8d57031. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBBBA1800644.
Cello Suite No. 1 in G Major, BWV 1007: I. Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dacf3c7f6c56936d5a05c3c56b8b648572beff8fca2763ed48682e30219966. 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/NLA506400140.
Prelude for Lute in C Minor, BWV 999 (Transcr. for Guitar in D Minor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02b05df53c5174d60bdac2aabdf04a6df7532e98cdd517343f42a04baafed40. 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/NLA506700710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dacf3c7f6c56936d5a05c3c56b8b648572beff8fca2763ed48682e30219966. 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/NLA506400140.
Leo: Flute Concertos Nos. 1 & 2 - Porpora: Or che d'orrido verno
Orquestra Sinfônica do Estado de São Paulo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f7e7bf2642cc16b5ad7cfcebafa1e90648c060569db3ce953b49cbfac7e70b. 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/HKI192421705.
Pt. 2: No. 11a, Thy Judgment Now Is Near
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8264e557479d99fdf647036a437476dd20ab2d61aeb8ff2297f0b0b55d2e291a. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/FINDE2400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19665728b413c506be6c32a3d7ea32f89089be70a9c9a40cbd5e8258fed87b9c. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/HKI192439002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc744d0caf5d8829f444767b04bbdd7e06e82b2847a18e6f5bbff678b5068e3bd. 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/CH8292001307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eed36e6e03f16df8e9850c04df1d6662eb26c74472fee1bbbef4065cffa0486. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEB262400544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dae44bd6d00d8086c78e9cfa21c31de17421bdd893fafff555b33292c054cd. 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/FINDE2400141.
Membra Jesu nostri No. 1, BuxWV 75 "Ad pedes"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f09d7c4d58f177626c7b615e26af5e26997d956bd3fbb9f04f0fe60be719226. 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/SEBAA2202901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792db18682a10c0b4f7e52e0273585c182dc402a94545e933a6bc73b5801dc9e. 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/HKI192414402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fb4e7b7f801bcb6b2993cf2b4f9586cc672687fab589cb11c862b2b1d630d0. 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/HKI192409703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8a0664a39fc925e4282341724ae943c1cc47b84104f4e86cde4d8e58891300. 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/DEU921912905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07a5d449fa7339b9eb3eeb003e5ded0e76f58e2c350faac40f98491302f561f. 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/HKI192421910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765a5e2de89564138b5a389dfd7ad232638f2a8a349700d312ecf4e83291ab37. 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/SEBAA2404302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39274f079005e1977419a3cf7addc432a2be969aac45fcbe9fd0be84dc0d5de1. 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/DEB262400542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c233712189a6293bf6ad360fd904c20759c98e423fc388115cf3e31208af556. 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/HKI192413112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7b7def21c57df1a7fc227aef7c54033c4da6724029af4d40ee7602fd6bc8d3. 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/HKI192411907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff34c5511aba170fae675c419cadcf5989d0c0461153a82eae2f163fbec7ea3. 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/HKI192306815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8728a0624738466f2d4c3d738cdc56e3824009b3c057f9164a5a1cf504ded0a9. 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/HKI192412507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f67f698afaf306db8c960f1d9f26c2e3f158997c3a575087c33846747dd4c7. 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/HKI192401503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282e39308cc0d3648e9e72373080cbc48458ad3298ec29e8e244841718d038ae. 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/HKI192413809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a4922ffcce4e9f0a4d2f63e24e2c8a1dafa9db4a17685e6d6d4f5c785d6af8. 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/DKBW52500302.
Sammartini: Flute Sonatas, Op. 2 Nos. 7-12
Sammartini: Sonata for Flute and Basso Continuo, Op. 2, Nos. 1-6
Spontini: Notturno Concertato con vari strumenti - Cambini: Tre Sinfonie Concertanti per flauto, oboe e orchestra