Flute and Harp Concerto in C Major, K. 299: II. Andantino

Recording identifiers

ISRC

FRZ201500215

Release date of the album this recording appears on

2021-09-04

CopyrightID (CopyrightChains transaction hash)

0x9d6b74ffa84345a6f1d9085d2a240e43f2f442d960c00b0ce305379025c9cdf0

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T20:22:46Z

Bitcoin block

960459

Canonical record hash

sha256:cfc865affa6ebb55b2ba6ca40c51fb1dce3411485ba35ff3e5fc688028337c35

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC FRZ201500215

What this proof establishes

This recording was released in 2021, 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.