Os Kiezos is the name of a musical ensemble (conjunto) that emerged in 1963 in Marçal, a neighbourhood of Luanda. Known particularly within the genre of semba and Latin music like merengue, rumba and
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813bd63a99051b17724783922747e9acc739021ef0788b27e09e61679d669a54. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e933e460-0d70-4cc8-83da-8bd255f0798b.json and https://artists.proofprofile.net/proofs/artist/e933e460-0d70-4cc8-83da-8bd255f0798b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Angola, Soundtrack 2: Hypnosis, Distortions & Other Sonic Innovations 1969-1978 (Analog Africa No. 15)
Rebita (Analog Africa Dance Edition No. 4)
Soul of Angola: Anthologie De La Musique Angolaise 1965 - 1975
Angola Soundtrack: The Unique Sound of Luanda: 1968-1976 (Analog Africa No. 9)