No. 1 in B flat minor Op. 9 No. 1: Larghetto for Piano & Strings

Recording identifiers

ISRC

KRUM70800143

CopyrightID (CopyrightChains transaction hash)

0x0a96d3b6460e24b2e127f4df31df0215b20ded289b18d4b46d52a8c741eb7ae3

Copyright registration time

2026-07-31T16:29:15+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T17:29:52Z

Bitcoin block

960441

Canonical record hash

sha256:abc0b0ea9aab1da55b28f67d53913afc6a72d6e0b87f077dbccc21694f9aabe0

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
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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.