Flute Sonata, H. 306: I. Allegro moderato

Recording by Bohuslav Martinů.

Recording identifiers

ISRC
CZA166701330
CopyrightID (CopyrightChains transaction hash)
0x22fad315f4ba7a27340c9a3536805fd82396a245c74cee170cf0a4b73d8f8ac4
Copyright registration time
2026-07-31T11:57:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T12:24:41Z
Bitcoin block
960397
Canonical record hash
sha256:ea31673f88bc18f0c0854b8b4a277ef8539c7e49770249b70d1c42f20f5c0833

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.