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 0xc27eed2fbf22748fd2a641cffcc3fb1fcd25e96752beb6f8757f67a775173c84. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/097dd839-55cb-406d-9657-871341f45020.json and https://artists.proofprofile.net/proofs/artist/097dd839-55cb-406d-9657-871341f45020.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Felix Mendelssohn: Lieder ohne Worte (Arr. for Violin and Piano by Ferdinand David)
Lieder Ohne Worte, Erstes Heft, Op. 19 (Arr. for Violin and Piano by Ferdinand David): I. Andante con moto
Lieder Ohne Worte, Erstes Heft, Op. 19 (Arr. for Violin and Piano by Ferdinand David): II. Molto allegro e vivace
Lieder Ohne Worte, Erstes Heft, Op. 19 (Arr. for Violin and Piano by Ferdinand David): III. Moderato
Lieder Ohne Worte, Erstes Heft, Op. 19 (Arr. for Violin and Piano by Ferdinand David): IV. Venetianisches Gondellied: Andante con moto
Lieder Ohne Worte, Zweites Heft, Op. 30 (Arr. for Violin and Piano by Ferdinand David): I. Andante espressivo
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 0x77a455b58dd0f203cb5d675808966f4b7f2ecf8c014cbc2f0115b85c00ac3eb8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBASH2469605.
Lieder Ohne Worte, Zweites Heft, Op. 30 (Arr. for Violin and Piano by Ferdinand David): II. Allegro di molto
Lieder Ohne Worte, Zweites Heft, Op. 30 (Arr. for Violin and Piano by Ferdinand David): III. Adagio ma non troppo
Lieder Ohne Worte, Zweites Heft, Op. 30 (Arr. for Violin and Piano by Ferdinand David): IV. Agitato e con fuoco
Lieder Ohne Worte, Zweites Heft, Op. 30 (Arr. for Violin and Piano by Ferdinand David): V. Venetianisches Gondellied: Allegretto tranquillo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148af86c78757195e8645a8c97fc73452b3e352e91668b3bb67da88876bd1a5f. 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/GBASH2469609.
Lieder Ohne Worte, Drittes Heft, Op. 38 (Arr. for Violin and Piano by Ferdinand David): I. Con moto
Lieder Ohne Worte, Drittes Heft, Op. 38 (Arr. for Violin and Piano by Ferdinand David): II. Allegro non troppo
Lieder Ohne Worte, Drittes Heft, Op. 38 (Arr. for Violin and Piano by Ferdinand David): III. Presto e molto vivace
Lieder Ohne Worte, Drittes Heft, Op. 38 (Arr. for Violin and Piano by Ferdinand David): IV. Agitato
Lieder Ohne Worte, Drittes Heft, Op. 38 (Arr. for Violin and Piano by Ferdinand David): V. Duetto: Andante con moto
Lieder Ohne Worte, Viertes Heft, Op. 53 (Arr. for Violin and Piano by Ferdinand David): I. Andante con moto
Lieder Ohne Worte, Viertes Heft, Op. 53 (Arr. for Violin and Piano by Ferdinand David): II. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872997a65a8a6e471ed3b6633101c68e44c7be9f9e47837b1c5c946ed45f1336. 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/GBASH2469616.
Lieder Ohne Worte, Viertes Heft, Op. 53 (Arr. for Violin and Piano by Ferdinand David): III. Presto agitato
Lieder Ohne Worte, Viertes Heft, Op. 53 (Arr. for Violin and Piano by Ferdinand David): IV. Adagio
Lieder Ohne Worte, Viertes Heft, Op. 53 (Arr. for Violin and Piano by Ferdinand David): V. Volkslied: Allegro con fuoco
Lieder Ohne Worte, Viertes Heft, Op. 53 (Arr. for Violin and Piano by Ferdinand David): VI. Allegro molto vivace
Lieder Ohne Worte, Fünftes Heft, Op. 62 (Arr. for Violin and Piano by Ferdinand David): I. Andante espressivo
Lieder Ohne Worte, Fünftes Heft, Op. 62 (Arr. for Violin and Piano by Ferdinand David): II. Allegro con fuoco
Lieder Ohne Worte, Fünftes Heft, Op. 62 (Arr. for Violin and Piano by Ferdinand David): III. Allegro con anima
Lieder Ohne Worte, Fünftes Heft, Op. 62 (Arr. for Violin and Piano by Ferdinand David): IV. Allegretto grazioso
Lieder Ohne Worte, Sechtes Heft, Op. 67 (Arr. for Violin and Piano by Ferdinand David): I. Andante
Lieder Ohne Worte, Sechtes Heft, Op. 67 (Arr. for Violin and Piano by Ferdinand David): II. Allegro leggiero
Lieder Ohne Worte, Sechtes Heft, Op. 67 (Arr. for Violin and Piano by Ferdinand David): III. Presto
Lieder Ohne Worte, Sechtes Heft, Op. 67 (Arr. for Violin and Piano by Ferdinand David): IV. Allegretto non troppo
Lieder Ohne Worte, Siebentes Heft, Op. 85 (Arr. for Violin and Piano by Ferdinand David): I. Andante espressivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4aa10856692bc05141739fc9c7994da1f531dd16c2c5d379504967006baa726. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBASH2469629.
Lieder Ohne Worte, Siebentes Heft, Op. 85 (Arr. for Violin and Piano by Ferdinand David): II. Presto
Lieder Ohne Worte, Siebentes Heft, Op. 85 (Arr. for Violin and Piano by Ferdinand David): III. Andante sostenuto
Lieder Ohne Worte, Siebentes Heft, Op. 85 (Arr. for Violin and Piano by Ferdinand David): IV. Allegretto con moto
Mendelssohn: Lieder Ohne Worte, Sechtes Heft, Op. 67: II. Allegro leggiero
6 Romances sans paroles, Op. 76: VI. Méditation