Clarinet Concerto No. 2 in E-Flat Major, Op. 74: III. Polacca

Recording by Carl Maria von Weber.

Recording identifiers

ISRC
FROV62335410
CopyrightID (CopyrightChains transaction hash)
0x65fec04d5a43a7d8a5e283c4013824c6bab59cac93e24910d6025d3962bec2e1
Copyright registration time
2026-07-29T13:16:37+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T13:38:16Z
Bitcoin block
960113
Canonical record hash
sha256:febe8143f188c1f4cd8141a266ed28ccc4821bc64d5159d604bbf45f6b9621b1

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.