Nếu Em Không Hạnh Phúc (Lofi Ver.)

Recording identifiers

ISRC

QZYHM2409935

CopyrightID (CopyrightChains transaction hash)

0x7ed83337d1545262b48fc63a6213f1e249571b9c49f2ccd9482f2d42d844c2ba

Copyright registration time

2026-06-25T13:52:59+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:cce8bf317d465a2b3084145ef3ef05c4e8202f951116ef86f8df4c260cb23020

• 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.