いつのまにか君を

Recording by Rica Matsumoto.

Recording identifiers

ISRC
JPZ921410717
CopyrightID (CopyrightChains transaction hash)
0x19261d4f0f0fcf1c170ed365675c92c00436346aad830fadf2a595cca2fa519b
Copyright registration time
2026-07-07T00:00:10+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:53:27Z
Bitcoin block
957124
Canonical record hash
sha256:c1c6078d84af5bada08531d2eaeb6ae6a4cb059b8663f519b577234f37c8038e

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.