{"copyright_id":"0x964c687942fb285ab9b27a526beeb1ff37bee7c5fc9bbe10bd35c22214d28033","name":"Kurpfälzisches Kammerochester Mannheim","registered_at":"2026-06-15T02:46:45Z","symbol":"NIM0657834","token_address":"0xecce8a18344a877806a6f085e547f895c54f8bca","type":"artist","uuid":"d3a0c61d-bfe7-4c32-9dc9-95e6f7c80a5a"}
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 0x964c687942fb285ab9b27a526beeb1ff37bee7c5fc9bbe10bd35c22214d28033. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3a0c61d-bfe7-4c32-9dc9-95e6f7c80a5a.json and https://artists.proofprofile.net/proofs/artist/d3a0c61d-bfe7-4c32-9dc9-95e6f7c80a5a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Divertimento in D Major, K. 136: I. Allegro
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 0xf621e5edeb81ef246b7349918dab5cb04a5d9d0e1e90a86396579b95e320817a. 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/NLY331410429.
Concerto in D Major for Trumpet, Strings & B.C.: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c38d530a3a02348ec21b8f5763d1e78a2c782ac8df63478bbca291e55dc615. 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/NLY331011704.
Concerto in D Major for Trumpet, Violin, Strings & B.C.: II. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4968692b9aff4fafa8045cf3f38ad41c655e02e207ca34a815922edbe171a03a. 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/NLY331011707.
Serenade in G Major, K. 525 "Eine, kleine nachtmusik": I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96032756a7f7b823f595e6e938fa2ea646e71e0009a723eb9f1fdd197b3aa19. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NLY331410451.
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
Serenade in G Major, K. 525 "Eine, kleine nachtmusik": IV. Rondo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6027aeb82659cdd40d06f04b44497004623c9fd5709a9810f7ccb0034bf98a2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLY331410454.
Concerto in D Major for Trumpet, Strings & B.C.: I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f8efac8a10d2e8f4a89c2ba795904aafe439405939623ec75efa4a176bbedc. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/NLY331011703.
Concerto in D Major for Trumpet, Strings & B.C.: III. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd643c742201a4683700ef229fd04495949277666ced17ac72ff4294443f721aa. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLY331011705.
Concerto in D Major for Trumpet, Violin, Strings & B.C.: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc564a8d77514f2240bd1b3c2319b161b39f05e31dcc78b49ffd3010269339ab. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLY331011706.