{"copyright_id":"0x052b2bbddebe7accfbfe3ecf746fbe36cd62c8d54f46b5d1a7fc8fb2843b79ff","name":"Simon Höfele","registered_at":"2026-06-14T12:42:49Z","symbol":"NIM0456437","token_address":"0x038db760126affe156ace13ce6e2bce610624c18","type":"artist","uuid":"4e199b06-cada-45e5-b30f-f5dcfac8adb2"}
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 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 0x052b2bbddebe7accfbfe3ecf746fbe36cd62c8d54f46b5d1a7fc8fb2843b79ff. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e199b06-cada-45e5-b30f-f5dcfac8adb2.json and https://artists.proofprofile.net/proofs/artist/4e199b06-cada-45e5-b30f-f5dcfac8adb2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trumpet Concerto in E Major, S.49: I. Allegro con spirito
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 0x63aa46728009f2bee4b0639bee1ac21ee59186f5af20e58c58f74a61b3eb27b0. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/DES382002001.
Trumpet Concerto in E Major, S.49: III. Rondo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04faec89be7aa720278756fe181720f0a05464d3970674265a12edd4e4fd7dec. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/DES382002003.
Trumpet Concerto in E-Flat Major, Hob. VIIe:1: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13e2b73a3f2d7b72945ccef56d567af6a6a668c35ef5cfe26e118acd09c955f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DES382002004.