Back to the Past

Recording by Mika Tyyskä.

Recording identifiers

ISRC
FI53T1800009
CopyrightID (CopyrightChains transaction hash)
0x21ee86d91546dd36a7bb4208a679596df7b8ce3bc674c8db22d92f79b5f373b9
Copyright registration time
2026-07-07T02:02:27+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:0453f6b0b0739627ef8009d432a38ad80d865ec382dff9bf63295e2d1b1f746f

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.