6 tango etudes no.4. - Lento - Meditativo for (alto) flute solo

Recording identifiers

ISRC

NLF8Z1400007

Release date of the album this recording appears on

2015-05-22

CopyrightID (CopyrightChains transaction hash)

0xaa45badaca0e97678a7191772995593a5e6570a3a6c268c16c813b0e6fcc4238

Copyright registration time

2026-07-06T08:04:06+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T18:39:05Z

Bitcoin block

957073

Canonical record hash

sha256:bcef60de5559a5f62de34463caf7722b578117aa13e9925cc04474339413773f

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• Recording evidence summary for ISRC NLF8Z1400007

What this proof establishes

This recording was released in 2015, 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.