Entr'acte - From "The Sound of Music"

Recording identifiers

ISRC

NLA509109311

Release date of the album this recording appears on

1992-01-01

CopyrightID (CopyrightChains transaction hash)

0x8e3acf3cf02433a21505069f0a561a86581a8ffbedc0475318c03f0a2b6ffaaa

Copyright registration time

2026-07-06T06:35:03+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-06T07:16:32Z

Bitcoin block

956891

Canonical record hash

sha256:3e9851f43c5c4c63e8eaba3c112978cefbb66eaacbb2d4c4c17dc23e7f4b0ef0

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLA509109311

What this proof establishes

This recording was released in 1992, 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.