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 0x801d8f991d6d16f46fcb7ba6dda1a689f96c0ca917ad524abad38e42cb29e8dc. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50299365-0d64-40a9-a5c6-ea1628189091.json and https://artists.proofprofile.net/proofs/artist/50299365-0d64-40a9-a5c6-ea1628189091.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pietro Antonio Locatelli: Concerti grossi, Op. 1 (Vol. 2)
Concerto grosso No. 7 in F Major, Op. 1: I. Allegro
Concerto grosso No. 7 in F Major, Op. 1: II. Largo
Concerto grosso No. 7 in F Major, Op. 1: III. Allegro
Concerto grosso No. 8 in F Minor, Op. 1: I. Largo
Concerto grosso No. 8 in F Minor, Op. 1: II. Grave
Concerto grosso No. 8 in F Minor, Op. 1: III. Vivace
Concerto grosso No. 8 in F Minor, Op. 1: IV. Grave
Concerto grosso No. 8 in F Minor, Op. 1: V. Largo - Andante
Concerto grosso No. 8 in F Minor, Op. 1: VI. Andante
Concerto grosso No. 8 in F Minor, Op. 1: VII. Pastorale
Concerto grosso No. 9 in D Major, Op. 1: I. Allegro
Concerto grosso No. 9 in D Major, Op. 1: II. Largo
Concerto grosso No. 9 in D Major, Op. 1: III. Allemanda. Allegro
Concerto grosso No. 9 in D Major, Op. 1: IV. Largo - Andante
Concerto grosso No. 9 in D Major, Op. 1: V. Allegro
Concerto grosso No. 10 in C Major, Op. 1: I. Largo
Concerto grosso No. 10 in C Major, Op. 1: II. Allemanda. Allegro
Concerto grosso No. 10 in C Major, Op. 1: III. Largo - Andante
Concerto grosso No. 10 in C Major, Op. 1: IV. Vivace
Concerto grosso No. 11 in C Minor, Op. 1: I. Largo
Concerto grosso No. 11 in C Minor, Op. 1: II. Allemanda. Allegro
Concerto grosso No. 11 in C Minor, Op. 1: III. Sarabanda. Largo
Concerto grosso No. 11 in C Minor, Op. 1: IV. Giga. Allegro
Concerto grosso No. 12 in G Minor, Op. 1: I. Largo
Concerto grosso No. 12 in G Minor, Op. 1: II. Allemanda. Allegro
Concerto grosso No. 12 in G Minor, Op. 1: III. Sarabanda. Vivace
Concerto grosso No. 12 in G Minor, Op. 1: IV. Presto
Concerto grosso No. 12 in G Minor, Op. 1: V. Gavotta. Allegro
Pietro Antonio Locatelli: Concerti grossi, Op. 1
Concerto grosso No. 1 in F Major, Op. 1: I. Allegro
Concerto grosso No. 1 in F Major, Op. 1: II. Largo
Concerto grosso No. 1 in F Major, Op. 1: III. Allegro
Concerto grosso No. 1 in F Major, Op. 1: IV. Largo
Concerto grosso No. 1 in F Major, Op. 1: V. Allegro
Concerto grosso No. 2 in C Minor, Op. 1: I. Adagio
Concerto grosso No. 2 in C Minor, Op. 1: II. Allegro
Concerto grosso No. 2 in C Minor, Op. 1: III. Largo
Concerto grosso No. 2 in C Minor, Op. 1: IV. Allegro
Concerto grosso No. 2 in C Minor, Op. 1: V. Allegro
Concerto grosso No. 3 in F Major, Op. 1: I. Largo
Concerto grosso No. 3 in F Major, Op. 1: II. Allegro
Concerto grosso No. 3 in F Major, Op. 1: III. Largo - Allegro - Largo
Concerto grosso No. 3 in F Major, Op. 1: IV. Vivace
Concerto grosso No. 3 in F Major, Op. 1: V. Allegro
Concerto grosso No. 4 in E Minor, Op. 1: I. Adagio
Concerto grosso No. 4 in E Minor, Op. 1: II. Allegro
Concerto grosso No. 4 in E Minor, Op. 1: III. Largo
Concerto grosso No. 4 in E Minor, Op. 1: IV. Allegro
Concerto grosso No. 5 in D Major, Op. 1: I. Largo
Concerto grosso No. 5 in D Major, Op. 1: II. Allegro
Concerto grosso No. 5 in D Major, Op. 1: III. Largo
Concerto grosso No. 5 in D Major, Op. 1: IV. Allegro
Concerto grosso No. 6 in C Minor, Op. 1: I. Adagio
Concerto grosso No. 6 in C Minor, Op. 1: II. Allegro
Concerto grosso No. 6 in C Minor, Op. 1: III. Largo
Concerto grosso No. 6 in C Minor, Op. 1: IV. Allegro