Guitar Sonata, Op. 21, No. 3: II. Romance: Andante sostenuto

Recording identifiers

ISRC

HKI199502908

Release date of the album this recording appears on

1995-12-15

CopyrightID (CopyrightChains transaction hash)

0x290adc8facd21c5a0f722d4eb08a400ec34d5d0f1dc8d165de99d364bfdf0424

Copyright registration time

2026-07-07T04:48:32+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:22:41Z

Bitcoin block

957120

Canonical record hash

sha256:de75049f0c9fd80f46a6ec4499a7b678516bb7d3465528d696a811ef44a50c5a

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC HKI199502908

What this proof establishes

This recording was released in 1995, 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.