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 0x1d5bca7f835678d61fde17bb4312f461f4ebd2c7b8e94ca924817852895fbd48. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b24c443-8a27-4f37-b130-29de6d9fd6d6.json and https://artists.proofprofile.net/proofs/artist/2b24c443-8a27-4f37-b130-29de6d9fd6d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano Concerto, Op. 61: I. Allegro moderato
Piano Concerto, Op. 61: II. Poco sostenuto
Suite, Op. 56: I. Präludium. Allegro moderato
Suite, Op. 56: II. Fuge. Allegro moderato
Suite, Op. 56: VI. Forlane. Vivace - VII. Anglaise. Moderato
Passacaglia on "Es ist ein Schnitter, der heisst Tod", Op. 98
3 Songs Without Words (Version for Violin & Piano): No. 1, Arioso
3 Songs Without Words (Version for Violin & Piano): No. 2, Ballad
3 Songs Without Words (Version for Violin & Piano): No. 3, Sephardic Melody
3 Studies: No. 3, Presto e molto leggiero
5 Pieces, Op. 34: No. 5, Toccata (Arr. M. Zorman for Violin & Orchestra)
Rudolf Moser: Overture to a Church concert Op. 41
Overture to a Church concert Op. 41: Overture to a Church concert Op. 41
Glass: Violin Concerto No. 2 "The American Four Seasons" & Violin Sonata
Violin Concerto No. 2 "The American Four Seasons": Prologue
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 0xe4d3114ad8288453f395fd1dda98495a10b1592bf14c963f3f321db23b869fcf. 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/HKI191930701.
Violin Concerto No. 2 "The American Four Seasons": I. —
Violin Concerto No. 2 "The American Four Seasons": Song No. 1
Violin Concerto No. 2 "The American Four Seasons": II. —
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06a4e071baa48d8ba58bd6c01e93f3bbc7ce128fd780fee71e115e8d28868b1. 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/HKI191930704.
Violin Concerto No. 2 "The American Four Seasons": Song No. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350562e18d0e1c940787929828dc9506f53f9f01217aaa6615b1fa34c7b57ef. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKI191930705.
Violin Concerto No. 2 "The American Four Seasons": III. —
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b85c7280f07661ee54772424201f2085c79755f0c494572093464f77109d35. 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/HKI191930706.
Violin Concerto No. 2 "The American Four Seasons": Song No. 3
Violin Concerto No. 2 "The American Four Seasons": IV. —
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620315e0a8298e177daf39ce744b9e0b33530d64830a63c63992109c6fde162f. 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/HKI191930708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2064f55d2c63fdaf8e441a288605aa03b792f0f150a7eccaca35450cf0cc9bc. 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/HKI191930709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ac4eb057772cbebe26607b5fd0839f99faec9d71c4c5e4d5f41adea5fbae57. 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/HKI191930710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9402cd3f6b91ca901127643d4652723a7d79f0a9f345f038d0f49a4bf3315e64. 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/HKI191930711.