Now You Know

Recording by Stephen Sondheim.

Recording identifiers

ISRC
TCAGK2281660
CopyrightID (CopyrightChains transaction hash)
0xd26c0a068696539918f79ec93b3a9a15b98157c203b286c6fdcaffdfa3cde165
Copyright registration time
2026-07-07T13:57:13+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:72d6939feb6c46f03f72df26276b7be64512f22ecf40f9a166bf612f0239efef

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.