Invisible Strings

Recording by Yumi Matsutoya.

Recording identifiers

ISRC
JPTO00401691
CopyrightID (CopyrightChains transaction hash)
0x982b1ef2a95f7f59b91a66a6f0fa87e1bb9948ab2135ffa67fd9adf7ab0f8e59
Copyright registration time
2026-07-06T20:13:18+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:c17fa0ff87a4a4c84f7a75897a8472f2833a943fe1f12ff45d7522521eaec9b3

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.