北国之春 - 二胡曲

Recording identifiers

ISRC

FR2X42280287

CopyrightID (CopyrightChains transaction hash)

0xb157169af5d7eb0a8576f8cbdcf54a45bd03cc0e92d8d049fe3f5bd67c05795f

Copyright registration time

2026-07-31T09:06:04+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T09:25:34Z

Bitcoin block

960379

Canonical record hash

sha256:40218c351b28971795da9fd655106e8a74af2e609ae75c3600696795101fa05b

• 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.