Ballade for Trombone and Piano

Recording by Frank Martin.

Recording identifiers

ISRC
SEAEC8458030
CopyrightID (CopyrightChains transaction hash)
0xa8f9fcab02ecb108955a2f0fa8b6bf615c20bf5d0a168a133d50d3ddbdd9762b
Copyright registration time
2026-07-07T15:12:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:5eb6c0bd08309394d172c7d906898d52cfc38c4b38625785890c5c4f0e45d91e

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.