Last Summer

Recording identifiers

ISRC

USSM12102885

CopyrightID (CopyrightChains transaction hash)

0x9331eadbb7db0acdaa353767b6cb6f3b7af99df5449ff23f63189e3b181ad1d0

Copyright registration time

2026-06-10T11:02:42+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T17:25:41Z

Bitcoin block

953536

Canonical record hash

sha256:61fbcbb55c9e9050ec8281c991205671e001489559df7e4f29a9579b750f7b4f

• 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.