La Ciudad de las Bicicletas

Recording by María Villalón.

Recording identifiers

ISRC
ES07G1200026
CopyrightID (CopyrightChains transaction hash)
0xf019dd9547cf9a80327611709da1688b44cfedb27f25f21af1960769ab1be0cf
Copyright registration time
2026-06-22T09:12:23+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:fe78c0d5350e928c79709ee3bbce897ca3d159fff250ae37d16d749e0c17e9e8

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.