Letargo

Recording identifiers

ISRC

BK4DA2428339

CopyrightID (CopyrightChains transaction hash)

0xfa2c5fe3db62bd482e66a6a91061b2695c6b03b2e4c38b6356d33b00662c4eea

Copyright registration time

2026-07-22T12:10:06+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-22T12:33:25Z

Bitcoin block

959128

Canonical record hash

sha256:eff4367fa408150d751e2c3007ec0fa8a8df5669cbb01f2974fd1c0b444a4ee6

• 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.