Lyrical Pieces, Op. 54: No. 3, March of the Trolls

Recording identifiers

ISRC

NLE421901622

Release date of the album this recording appears on

2020-09-11

CopyrightID (CopyrightChains transaction hash)

0xb4a9fa95d3143c53378310529538b39f8e314485a0194acb6c10c531a9200fb6

Copyright registration time

2026-07-06T08:43:54+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T14:04:01Z

Bitcoin block

957046

Canonical record hash

sha256:a2b693c6afc620103f8212582346bfa8b474b28435f28626cf1f2e42ec1a0eb4

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC NLE421901622

What this proof establishes

This recording was released in 2020, 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.