21 Hungarian Dances, WoO 1: No. 7 in A Major: Allegretto (Arr. for Piano Duet)

Recording identifiers

ISRC

NLA508127007

Release date of the album this recording appears on

1981-08-01

CopyrightID (CopyrightChains transaction hash)

0x7d8dcde4193525e28cbb241c409ae320368fc8fecd5c8dd9a7406f8f18de279d

Copyright registration time

2026-07-07T22:22:28+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:22:41Z

Bitcoin block

957120

Canonical record hash

sha256:7a4161619068c5922fb204f88d089890a8c6089747d1b433d506a3b59fb48c28

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLA508127007

What this proof establishes

This recording was released in 1981, 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.