ISRC QM4TW1679022
Verified recording
QM4TW1679022 is “Hora Certa” by Sebastião Antunes & Quadrilha,
registered on the CopyrightChains blockchain with CopyrightID
0x96959e7a754b9af28b2604c4dcb7f6c28c7ee04e61febd45bb205525407dc8e5 and independently timestamped
in Bitcoin block 960441 on 2026-07-31.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1679022.
Recording identifiers
- ISRC
- QM4TW1679022
- Title
- Hora Certa
- Artist
- Sebastião Antunes & Quadrilha
- CopyrightID (CopyrightChains transaction hash)
0x96959e7a754b9af28b2604c4dcb7f6c28c7ee04e61febd45bb205525407dc8e5
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-31T17:29:52+00:00
- Bitcoin block
- 960441
- Canonical record hash
sha256:ef607c728aace19e32b7853ef6cc3f533201543cf9f0808d5f3c6fdee6729d29- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1679022
- Bitcoin block existence check
- https://blockstream.info/api/block/960441