Temporal Variations: March (Arr. C. Matthews for oboe and orchestra)

Recording identifiers

ISRC

HKI190452307

CopyrightID (CopyrightChains transaction hash)

0x015601dbdbded89ed8935aeed7645c6971ac69e218996f2e35fba7ce853a2143

Copyright registration time

2026-07-07T12:25:32+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:1aadbb255d3481b96dae83cfcd297fce4b9b1e59b6cd569595ac11922d100a06

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.