Sonata for Flute & Piano, H. 306: III. Allegro poco moderato

Recording by Bohuslav Martinů.

Recording identifiers

ISRC
GBLWD9009616
Release date of the album this recording appears on
1990-09-01
CopyrightID (CopyrightChains transaction hash)
0xffd6fb8c3257c341a4db666bcc111ad1130498f95d83df7850339dfc1d10c913
Copyright registration time
2026-07-06T23:01:13+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:1b26359138f3cceaa4858fceafd249e0ec2f74bfae7091842bed4aa9a67a3841

What this proof establishes

This recording was released in 1990, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.