Piano Concerto No. 1 in E Minor, Op. 11: II. Romance (Larghetto)

Recording identifiers

ISRC

NLA507928502

Release date of the album this recording appears on

1981

CopyrightID (CopyrightChains transaction hash)

0xac7f3dd3406d7cff7f9f1f9cd80dd7df23a5049882421bb9568ca402c39966f9

Copyright registration time

2026-06-27T09:19:03+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:1ba3df3c5d1ced65805a29124a4d96d454ff9eedb75f4679fbec0876ac3e188d

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLA507928502

What this proof establishes

This recording was released in 1981, 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.