thumb| August Joseph Norbert Burgmüller (8 February 1810 – 7 May 1836) was a German composer, renowned for his contributions during the nascent stages of the Romantic Era. His oeuvre, albeit cut trag
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 0x0395b2da4b9599b00f09d696082440b0e9741d29f0497f15b60fa4a6f1eaff03. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a784e4fa-0001-4024-b92f-ff1b58de4e11.json and https://artists.proofprofile.net/proofs/artist/a784e4fa-0001-4024-b92f-ff1b58de4e11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Burgmüller: Complete String Quartets, Vol. 1
Burgmüller: Complete String Quartets, Vol. 2
Jubilee Edition 2010: Norbert Burgmüller (Songs and Chamber Music)
Burgmüller: Lieder & Piano Sonata, Op. 8
Burgmüller: Piano Concerto, Op. 1; Entr'actes, Op. 17; Overture, Op. 5
Burgmüller: Piano Concerto, Op. 1 & Entr'actes, Op. 17
Burgmüller: Rhapsodie in B Minor, Op. 13
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 0x304177a84f42319e3f09feee3ec788e04eec983be10742fed698dfc410e4fa24. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLWD1101201.