1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xbf8fda73a9ece87e606a06e71fe2404b82e3c22fc4bf3e4def0f4af713dfa222. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75ca3eeb-878a-4529-9db9-91f031eadb0d.json and https://artists.proofprofile.net/proofs/artist/75ca3eeb-878a-4529-9db9-91f031eadb0d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heinsius: Symphonies Nos. 1-6 - Lentz: Concertos Nos. 1 & 2 for Harpsichord and Strings
Symphony No. 1 in D Major, Op. 2, No. 1: I. Allegro
Symphony No. 1 in D Major, Op. 2, No. 1: II. Andantino
Symphony No. 1 in D Major, Op. 2, No. 1: III. Allegro
Symphony No. 2 in G Major, Op. 2, No. 2: I. Allegro
Symphony No. 2 in G Major, Op. 2, No. 2: II. Andante
Symphony No. 2 in G Major, Op. 2, No. 2: III. Presto
Concerto No. 1 in B-Flat Major for Harpischord and Strings: I. Allegro
Concerto No. 1 in B-Flat Major for Harpischord and Strings: II. Andante
Concerto No. 1 in B-Flat Major for Harpischord and Strings: III. Vivace
Symphony No. 3 in C Major, Op. 2, No. 3: I. Allegro assai
Symphony No. 3 in C Major, Op. 2, No. 3: II. Largo
Symphony No. 3 in C Major, Op. 2, No. 3: IV. Allegro
Symphony No. 4 in D Major, Op. 2, No. 4: I. Allegro assai
Symphony No. 4 in D Major, Op. 2, No. 4: II. Adagio
Symphony No. 4 in D Major, Op. 2, No. 4: III. Allegro
Concerto No. 2 in C Major for Harpischord and Strings: I. Allegro
Concerto No. 2 in C Major for Harpischord and Strings: II. Adagio - Affectuoso
Concerto No. 2 in C Major for Harpischord and Strings: III. Tempo di menuetto
Symphony No. 5 in F Major, Op. 2, No. 5: I. Allegro
Symphony No. 5 in F Major, Op. 2, No. 5: II. Largo
Symphony No. 5 in F Major, Op. 2, No. 5: III. Allegro
Symphony No. 6 in B-Flat Major, Op. 2, No. 6: I. Allegro spirituoso
Symphony No. 6 in B-Flat Major, Op. 2, No. 6: II. Largo gratioso
Symphony No. 6 in B-Flat Major, Op. 2, No. 6: III. Presto
Recorder Concerto in F Major: I. Allegro
Sammartini / Baston / Babell / Woodcock: Recorder Concertos
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 → block OTSBitcoinBlock must exist at that height 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 0x2309a70923edc7269f84eaf0266aac7c87df24bc355d1644e72fcffda24e7a5a. 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/SEAEJ9885010.
Recorder Concerto in F Major: II. (Siciliano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78e0ee34fe070a258be1296de19db7996fd8ae2d19fc94678ace17dd10e0953. 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/SEAEJ9885020.
Recorder Concerto in F Major: III. Allegro assai
Recorder Concerto No. 5 in D Major: I. Allegro
Recorder Concerto No. 5 in D Major: II. Andante
Recorder Concerto No. 5 in D Major: III. Presto
Recorder Concerto No. 1 in D Major: I. Allegro
Recorder Concerto No. 1 in D Major: II. Adagio
Recorder Concerto No. 1 in D Major: III. Allegro
Recorder Concerto No. 4 in A Major: I. Allegro
Recorder Concerto No. 4 in A Major: II. Adagio
Recorder Concerto No. 4 in A Major: III. Allegro
Recorder Concerto No. 2 in A Major: I. Allegro
Recorder Concerto No. 2 in A Major: II. Adagio
Recorder Concerto No. 2 in A Major: III. 1st Minuett - 2nd Minuett - 1st Minuett da capo
Recorder Concerto No. 3 in E Minor: I. Adagio
Recorder Concerto No. 3 in E Minor: II. Allegro
Recorder Concerto No. 3 in E Minor: III. Adagio
Recorder Concerto No. 3 in E Minor: IV. Allegro
Concerto for Sixth Flute in D Major, Op. 3, No. 2: I. Adagio