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 0xf38733ac0de6be8f93969476238b85cea10a58d0c27eb40b2bc5b4225238a9a2. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0373df2b-3155-4be3-bd2c-79c6ed3b580e.json and https://artists.proofprofile.net/proofs/artist/0373df2b-3155-4be3-bd2c-79c6ed3b580e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Que Rico Mambo (arr. E. Toussaint for wind ensemble)
Mambo No. 8 (arr. E. Toussaint for wind ensemble)
Estancia, Op. 8: IV. Danza final (arr. D. John for wind ensemble)
Bolero (arr. H. van Lijnschooten for wind ensemble)
Concert Piece in F Minor, Op. 113, MWV Q23 (arr. S. Goldhammer for wind ensemble): I. Allegro con fuoco
Concert Piece in F Minor, Op. 113, MWV Q23 (arr. S. Goldhammer for wind ensemble): II. Andante
Concert Piece in F Minor, Op. 113, MWV Q23 (arr. S. Goldhammer for wind ensemble): III. Presto
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): Promenade
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 0xb898dde685f485bce632421f10968b1aff8bdc11fb8704cc1d6187ec0fe64adf. 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/DET901226009.
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): I. Gnomus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b26e7f98c22abc812f765f6d24428780adeb87813265e5e145749d44833a2d. 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/DET901226011.
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): II. Old Castle
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): III. Tuileries
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78d0fa1093d3d8cdba17587615c00a8d1285bda337654ced3fd5c0268b05218. 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/DET901226014.
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): IV. Bydlo
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): V. Ballet of the Chickens in their Shells
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): VI. Samuel Goldenberg and Schmuyle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a63da8a546091a3349f4f1bf67fe02e0673962ebc8e5cee9f4f78ccb580cf29. 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/DET901226018.
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): VII. The Market-Place at Limoges
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): VIII. Catacombae (Sepulcrum romanum) -
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): VIII. Con mortuis in lingua mortua
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): IX. The Hut on Fowl's Legs (Baba-Yaga)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3581f5fd7b77a2d44a6d5c214cfca74fac89ac6b0946a28b4d5bac6a33e29217. 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/DET901226022.
Pictures at an Exhibition (arr. M. Hindsley for wind ensemble): X. The Great Gate at Kiev
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c4aae5900f82482dcdc277f26be9e14a2cfb2b8a3b837ccf9e9c5b934fe1e4. 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/DET901226023.
Que Rico Mambo (Arr. E. Toussaint for wind ensemble)
Mambo No. 8 (Arr. E. Toussaint for wind ensemble)
Estancia, Op. 8: IV. Danza final (Arr. D. John for wind ensemble)
Bolero (Arr. H. Van Lijnschooten for wind ensemble)
Concert Piece in F Minor, Op. 113, MWV Q23: I. Allegro con fuoco (Arr. S. Goldhammer for wind ensemble)
Concert Piece in F Minor, Op. 113, MWV Q23: II. Andante (Arr. S. Goldhammer for wind ensemble)
Concert Piece in F Minor, Op. 113, MWV Q23: III. Presto (Arr. S. Goldhammer for wind ensemble)
Pictures at an Exhibition: Promenade (Arr. M. Hindsley for wind ensemble)
Pictures at an Exhibition: I. Gnomus (Arr. M. Hindsley for wind ensemble)
Pictures at an Exhibition: II. Old Castle (Arr. M. Hindsley for wind ensemble)
Pictures at an Exhibition: III. Tuileries (Arr. M. Hindsley for wind ensemble)
Pictures at an Exhibition: IV. Bydlo (Arr. M. Hindsley for wind ensemble)
Pictures at an Exhibition: V. Ballet of the Chickens in their Shells (Arr. M. Hindsley for wind ensemble)
Pictures at an Exhibition: VI. Samuel Goldenberg and Schmuyle (Arr. M. Hindsley for wind ensemble)
Pictures at an Exhibition: VII. The Market-Place at Limoges (Arr. M. Hindsley for wind ensemble)
Pictures at an Exhibition: VIII. Catacombae (Sepulcrum romanum) - [arr. M. Hindsley for wind ensemble]
Pictures at an Exhibition: VIII. Con mortuis in lingua mortua (Arr. M. Hindsley for wind ensemble)
Pictures at an Exhibition: IX. The Hut on Fowl's Legs (Baba-Yaga) [arr. M. Hindsley for wind ensemble]
Pictures at an Exhibition: X. The Great Gate at Kiev (Arr. M. Hindsley for wind ensemble)