Serse (Xerxes), HWV 40, Act I: Ombra mai fu, "Largo" (arr. for flute, oboe and piano)
Opera Arias (Arr. for Flute, Oboe and Piano) - Delibes, L. / Puccini, G. / Offenbach, J. / Gounod, C.-F. / Mozart, W.A.
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 0x2909ac642eb5420faa1a713e1372af2187a95c908cf3f4623999d3af92f49ac1. 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/USASX0620917.