第四樂章／有精神的快板—莊嚴的快板（取材自〈痛快的哀艷〉）

Recording identifiers

ISRC

TWF671500219

CopyrightID (CopyrightChains transaction hash)

0x1e1a3cab37ec074c31813e91544ac0d09a536c95032eea84b7857766a831fcef

Copyright registration time

2026-07-06T19:28:01+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:c3a969e1fcfac352fdaf46c8fa62de9a9fa99210fde2ad66c8fd8da8ad4bf756

• 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.