難尋舊時夢

Recording identifiers

ISRC

HKB528000554

Release date of the album this recording appears on

2016-07-07

CopyrightID (CopyrightChains transaction hash)

0xe9a3498bf3f5f860e97772ded61ea36ca98d3ce07efd7256c2f7e6d17d71cf72

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T12:24:41Z

Bitcoin block

960397

Canonical record hash

sha256:912ddcc97c56b910567f4fb128ad490db58b2367a917c2024ccaa31b06df1fbf

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC HKB528000554

What this proof establishes

This recording was released in 2016, 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.