Yesterday (Mixed)

Recording identifiers

ISRC

NLF712013248

Release date of the album this recording appears on

2020-12-31

CopyrightID (CopyrightChains transaction hash)

0x4a4488bce3f5530e6eb119a4e11dd9e0730edf0f5ca776914470dbe138af2848

Copyright registration time

2026-06-21T19:48:06+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T16:07:00Z

Bitcoin block

957061

Canonical record hash

sha256:34f05736e0ae9d19194933efb482c49b6c7f0081722172058d30f7c139242d73

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLF712013248

What this proof establishes

This recording was released in 2020, 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.