Flute Sonata, H. 306: I. Allegro moderato

Recording by Bohuslav Martinů.

Recording identifiers

ISRC
CZA169101037
CopyrightID (CopyrightChains transaction hash)
0x929991fb8f27f10d1ea197cfdcf94e1e0aa32ef28c3e04b8d0bb2e06aabb51b7
Copyright registration time
2026-07-07T11:23:22+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:d281670684275ff4413c10c5b8aaa31dda1ed6e4ba7f8500b4f8065d8ac84502

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.