Popp: Sandmännchen: Humoreske für Flöte und Klavier, Op. 471, No. 4

Recording identifiers

ISRC

NLL6R1900511

Release date of the album this recording appears on

2018-08-01

CopyrightID (CopyrightChains transaction hash)

0x55b8f39f8193bec80f3b1b784e21ff5ebf74c26e6b86482a1d7fceb6be9f9cea

Copyright registration time

2026-07-07T13:58:03+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:3f0977630c955d0586bc17199bb30a05074663d1c6b928ae95dc236228aad938

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLL6R1900511

What this proof establishes

This recording was released in 2018, 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.