Rosita (Polka)

Recording by Francisco Tárrega.

Recording identifiers

ISRC
ES71G2008411
CopyrightID (CopyrightChains transaction hash)
0xb938cfaa85e0e582ae60f6d41f48b83cd683c472684b19b3076559f6f4ecf0f8
Copyright registration time
2026-07-06T07:06:18+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T18:39:05Z
Bitcoin block
957073
Canonical record hash
sha256:2c154603466455886ca61da4e45aa2ba95a4942c7e13afb17f004740311eb190

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.