210px|thumb|Anton Diabelli, lithograph by Josef Kriehuber Anton (or Antonio) Diabelli (5 September 17818 April 1858) was an Austrian music publisher, editor and composer. Best known in his time as a
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 0x4826ad1939e721c44be39014bcfab2bf907a115ff3b0c2db4465d49a99f6448b. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93956035-d1e0-40dc-9d4a-a9b75296ff7a.json and https://artists.proofprofile.net/proofs/artist/93956035-d1e0-40dc-9d4a-a9b75296ff7a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Diabelli: Opere per chitarra e fortepiano
Diabelli, A.: Serenate Concertante / Grande Serenade / Gesange Fur Herz Und Gefuhl / Gran Variazioni
Diabelli, A.: Serenate Concertante / Grande Serenade / Gesänge Fur Herz Und Gefuhl / Gran Variazioni
Anton Diabelli: Oeuvres pour Flûte et Guitare
The Diabelli Collection: Variations on a Waltz
Diabelli: Complete Sonatinas and Sonatas for Fortepiano and Guitar
Play It - Study Album - Piano / Klavier; Anton Diabelli: Sonatina "Jugendfreuden", Op. 163, No. 2 in G Major / G-Dur (Piano Accompaniment / Klavierbegleitung - Piano Four Hands / Klavier Vierhändig - A' = 443 Hz)
Play It - Study Album - Piano / Klavier; Anton Diabelli: Melodic Exercises / Melodische Übungsstücke, Op. 149, No. 1 - 10 (Piano Four Hands / Klavier Vierhändig)
Play It - Study Album - Piano/Klavier; Anton Diabelli: Sonatine IV "Jugendfreuden" D Major, Op. 163 No. 4 (Piano Accompaniment / Klavierbegleitung - Piano four Hands / Klavier vierhändig - Concert Pitch / Stimmton a' = 443 Hz)
Play It - Study Album - Piano / Klavier; Anton Diabelli: 2 Sonatinas in C Major / C-Dur + G Major / G-Dur, No. 1 + 2, Op. 24 (Piano Four Hands / Klavier Vierhändig)
Play It - Study Album - Klavier/Piano; Anton Diabelli: Jugendfreuden, Op. 163, No. 6 Sonatina in D Minor/D-Moll (Piano four Hands / Klavier vierhändig - a' = 443 Hz)
Play It - Study Album - Piano / Klavier; Anton Diabelli: Sonatine V "Jugendfreuden" A Major / A-Dur, Op. 163 No. 5 (Piano Accompaniment / Klavierbegleitung - Piano four Hands / Klavier vierhändig - Concert Pitch / Stimmton a' = 443 Hz)
Diabelli: Melodious Exercises Op. 149 (Digitally Remastered)
Diabelli: Sonatas for Piano 4 Hands, Opp. 32 & 38
Anton Diabelli: Melodious Exercises Op.149
Piezas melódicas Op. 149 (Segunda parte)
Piezas melódicas Op. 149 (Primera parte)
Diabelli: The First 12 Studies For The Piano Op. 125
Diabelli: Grande Sonata Brillante, Op. 102
Latin American Variations on an Anton Diabelli Theme
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 0x4007801cf8c9655b3510cb35fd19b53acf287563cb1bcbd001eae39252d341c7. 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/HKI199323119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe497a967dbc1f0c5bdf5036b14a832011b85a4e36db599e3bc3aaa37b364705a. 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/HKI199323118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae635a7439d7dbbd8b0e007defb9e8f8855c5077300582299f26f692731573b. 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/HKI199323120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a7ef6efb5ab2086625f11084341819305345458b372e6a09f19d6da0cb7f3f. 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/HKI199323121.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6189cf8b002b55254bbc37b823d3321324b982474e66e19298cb31aa77d9bcc. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/HKI199323122.