Ludus Tonalis: XIX. Interludium (Molto tranquillo)

Recording by Paul Hindemith.

Recording identifiers

ISRC
CHE271900091
CopyrightID (CopyrightChains transaction hash)
0xf75b8f6a6aeecc35d53f4373aff6b6ad38eb7217c7ad4f8badfe43bc84367f45
Copyright registration time
2026-07-07T20:03:59+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:39:04Z
Bitcoin block
957122
Canonical record hash
sha256:f2860f461ae047896f429ffa5067428e013b4e4d5df6ad1db56aba602fdae865

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.