Last Christmas

Recording identifiers

ISRC

ITI021000308

Release date of the album this recording appears on

2013-12-02

CopyrightID (CopyrightChains transaction hash)

0x05cfd7ccd6e60bc3d2a62afde7abd4993d9c96d2aa058dd74e7057f005db5653

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T09:09:19Z

Bitcoin block

960376

Canonical record hash

sha256:adbf20588d93226bee80cf7daea3568e634c114082d7667026506fa3da8bfe53

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC ITI021000308

What this proof establishes

This recording was released in 2013, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.