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 0x06f021ab43a6f003cbad74b9afbf5804a3a93da9df6fbd811c4687fb8f6d4650. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d981da0-f06d-40ef-9b42-100513bb7884.json and https://artists.proofprofile.net/proofs/artist/9d981da0-f06d-40ef-9b42-100513bb7884.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
3 romances sans paroles, Op. 17: No. 3 in A-Flat Major (Arr. P. Gouin for Cello & Piano)
5 Lieder, Op. 105 (Excerpts Arr. K.H. Schütz for Flute & Piano): No. 1, Wie Melodien zieht es mir
Woodland Sketches, Op. 51: No. 6: To a Water-lily
3 Romanzen, Op. 94 (Arr. G. Schwabe for Cello & Piano): No. 1, Nicht schnell
Bagatelle No. 25 in A Minor, WoO 59 "Für Elise"
24 Pensées musicales, Op. 75 "Les soirées de Pausilippe": No. 9 in D Major, Andantino con moto
Lyric Pieces, Book 1, Op. 12: No. 1, Arietta
6 Studies in English Folksong (Version for Cello & Piano): No. 3, Larghetto "Van Dieman's Land"
And Everything Is Still... (Version for Saxophone & Piano)
The Old New York Nostalgia: II. Lazy Morning (2002 orchestral Version)
Prelude in B Major, VL 186 (Arr. J. Daunytė for Harp)
Orquesta Juvenil Universitaria Eduardo Mata
Danze della mia bambola, Op. 8: No. 2, Hésitation
Triakontameron: No. 11, Alt-Wien (Arr. J. Heifetz for Violin & Piano)
3 Film Scores for String Orchestra: No. 3, Face of Another: Waltz
Country Pageant: III. There Was a Most Beautiful Lady
Suite bergamasque, L. 75: III. Clair de lune (Arr. R. MacDonald & T.A. Smith for 2 Guitars)
13 Preludes, Op. 32: No. 5 in G Major: Moderato
Here Beneath a Northern Star: Wedding Waltz of Akseli & Elina
Piano Album I: A Sarabande for the Only Jim in the World
Homenaje a Antonio de Cabezon: III. Glosa
Romeo & Juliet, Op. 64, Act I: No. 19, Balcony Scene
8 Nocturnes, Op. 368: No. 2, Andantino animato
4 Short Pieces for Violin & Piano, H. 104: No. 2, Spring Song (Version for Cello & Piano)
Days Go By (Arr. A. Suleiman for Cello & Piano)
Lieder ohne Worte, Op. 19b: Lieder ohne Worte (Song without Words) No. 6 in G Minor, Op. 19, No. 6, "Venezianisches Gondellied" [Venetian Gondola Song]
5 Folksongs in Counterpoint for String Quartet: No. 3, Drink to Me Only with Thine Eyes. Andante cantabile
Carnival of the Animals: XIII. The Swan (version for violin and piano)
Liebesträume, S. 541: No. 3: Nocturne in A-Flat Major
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 0x541cf1600dd956ccea91439a5f5d3e9c46f224508f19d502407f834b0f1108e7. 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/HKI191318003.
Piano Album I: Golden Notes on Nearing Fifty
Piano Album I: Another Little Song Without Words
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b46342b8e76cef17f287886e9c546e3f827228f7356c0670a47c04ad7ef2e8. 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/HKI191318006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfeaf412f20b7ce9a0e7fec059ba1a3aaa84887601c6b18020a1e8e035ccf5f. 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/HKI191318007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676e90e8e9e99c5d53a6b8cf8e1ae45f8e4b2f06ae046ca0149eca6211d63858. 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/HKI191318009.
Piano Album I: A Little Waltz for Jim at Fifty-Five
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe206ce9661a321d1d6c4bce824c5ab51362b81ca98c2ae44a3f8e38cb43daa02. 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/HKI191318012.
A Talisman for Jim on Christmas Eve: Piano Album I: A Talisman for Jim on Christmas Eve
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf788ab816787c847972a14ed81d4a2d38fbe660994a1fb53a1a692d1f2e8d2e2. 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/HKI191318014.
Piano Album I: A Berceuse for Jim at Christmas
Piano Album I: A Christmas Card for Mary and Rosemary
Piano Album I: 99 Notes for the Millennium
Piano Album I: 40 Chords for Mark on April First
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1898073e8144de791353fb5d8937fc0d80d432a33ecba5af48b386fedf6eb7. 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/HKI191318029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9f32e2eb3ee5578bb2ee6db468c165a6b9a5ab117003e22db7f11a1d60982a. 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/HKI191318030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6acc2f8333e7f6f7f3b387b41190e6097fd53c18aa8e2116a11872a75b45b8. 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/HKI191318032.
Bagatelle: Quasi Allegretto, Op. 126, No. 5
Bagatelle: Andante Con Moto, Op. 126, No. 1
Bagatelle: Presto — Andante Amabile E Con Moto — Presto, Op. 126, No. 6
Bagatelle: Allegro E Energico, Op. 126, No. 2
Symphony No. 4 in C Minor, Op. 43: II. Moderato con moto
L'enfant prodigue (The Prodigal Son), Op. 46: Scene 1: Les danseurs (The dancers)
Orquestra Sinfônica do Estado de São Paulo
Jota de San Fermin, Op. 36 (version for violin and orchestra)
Violin Concerto No. 1 in A Minor, Op. 77: IV. Burlesca: Allegro con brio
Netherlands Radio Philharmonic Orchestra
Sonata for Flute and Alto Flute: III. Nakts (Night): Misterioso
Theme and Variations, "The 4 Temperaments": Theme
12 Songs, Op. 48: No. 1. Der Engel (The Angel) (arr. J. Lloyd Webber for 2 cellos and piano)
Concerto dell'albatro: IV. Allegro vivace
Flute Concerto No. 22 in G Major: II. Adagio
Serenata espanola (arr. F. Tarrega for guitar)
String Trio, Op. 1: III. Largo con dolore (original published version)
Pavane, Op. 50 (arr. H. Busser for piano trio)
Clarinet Sonata: II. Tranquillo e fluente
Brass Quintet on Original Sea Shanties: I. Come Down to the Ships
Brass Quintet on Original Sea Shanties: II. Look to the Far Horizon
Brass Quintet on Original Sea Shanties: III. As We Load Silk and Fine Tobacco