Double Happiness

Recording identifiers

ISRC

HKG401200309

Release date of the album this recording appears on

2010-07-10

CopyrightID (CopyrightChains transaction hash)

0xe9ead6eb37a80400616b63115ad1121e1583ce3f9666593050a214e30c016a43

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T08:33:28Z

Bitcoin block

960231

Canonical record hash

sha256:61502e6c85b557a79486af1f7bb9483c3b9fa7c92aac6c57ff6686ab0e56ce61

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC HKG401200309

What this proof establishes

This recording was released in 2010, 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.