tự do

Recording by Tùng.

Recording identifiers

ISRC
VNA1M2107192
CopyrightID (CopyrightChains transaction hash)
0xd25e00f231f309e257fe5b14fe375b95fc7fba5bcf334f3ef7cb7302cb3b00d5
Copyright registration time
2026-06-08T15:42:55+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:c2364bcba3f392980f8864589053b58b98e85a4a119d0679c5140f969b17d2fc

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.