Lasst uns mit geschlungnen Händen, K.623a

Recording by Wolfgang Amadeus Mozart.

Recording identifiers

ISRC
NLA508810018
CopyrightID (CopyrightChains transaction hash)
0xbbff4765e66a385d98761f062ecb8223f0d50a5bc0121f1e976e1f4d9cee0864
Copyright registration time
2026-07-30T18:45:25+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T19:42:40Z
Bitcoin block
960300
Canonical record hash
sha256:f24d8bf19aa32bd800d2bcb3c64b6ea5906b9291216b2a7635d8a6c679ec4a32

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.