Valsa Tímida

Recording by Sebastião Antunes & Quadrilha.

Recording identifiers

ISRC
PT8CY2200536
CopyrightID (CopyrightChains transaction hash)
0x11ea5d15b655041d8253922be1897d98f86e0c172774f74a3fd489747d74e8a3
Copyright registration time
2026-07-07T17:57:31+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:d6814e05ba79be60d3217c3d8199523770f6ad719e40bb8fdb31972e1b8cd9d2

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.