Trumpet Concerto No. 2 in C (Cadenza: Hardenberger: I. Adagio

Recording identifiers

ISRC

NLA508808912

Release date of the album this recording appears on

1990-12-11

CopyrightID (CopyrightChains transaction hash)

0x06598f9ec1f0ad13f59d9d6f75f50c9c997ab97f9f7a6143511b4a1b7ab5494d

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T21:25:57Z

Bitcoin block

960468

Canonical record hash

sha256:d820fadb484eff6f25c2e0805acc6ee24ec4b9a7ebd5d3630c2d57bddbc04420

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLA508808912

What this proof establishes

This recording was released in 1990, 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.