Posts by Dr Jan van Niekerk
Mine Bitcoin or Sell Hashrate?
Compare mining BTC to a pool vs selling SHA-256 hashrate on NiceHash. Learn how difficulty, payout methods, fees, and SA power costs change outcomes.
Read MoreSell used electronics safely in SA
Learn practical steps to sell used electronics safely in South Africa, avoid fake payment scams, protect your data, and choose a safer selling route.
Read MoreRisks of selling your old PC on Gumtree and Facebook
Learn the main risks of selling an old PC on Gumtree or Facebook Marketplace in South Africa, plus safe meetup, payment checks, and data wipe steps.
Read MoreSell used goods online safely
A practical South Africa checklist to sell used goods online safely, avoid proof-of-payment scams, choose safer meetups, verify payments, and protect privacy.
Read MoreSell Your Laptop Safely in South Africa
Practical South Africa tips to sell your old laptop safely, wipe data properly, avoid proof-of-payment scams, choose safe meetups, and close the sale.
Read MoreTrusted IT Asset Disposal Partner
CFO buyer checklist for choosing a trusted IT asset disposal partner in South Africa, covering POPIA, chain of custody, data sanitisation, ESG, and value recovery.
Read MoreDon’t sell IT assets to staff
A CFO-focused, South Africa lens on why selling old laptops to staff increases data, POPIA, audit, tax, and reputational risk, plus safer ITAD options.
Read MoreEskom vs Solar vs Generator: Cost per kWh
Learn how to calculate true all-in R/kWh for crypto mining in South Africa across Eskom, solar PV, and diesel generators, including fixed charges and losses.
Read MoreBitcoin Dominance vs Alt Season
Learn what BTC dominance and alt season really measure, how traders confirm rotation using ETH/BTC, TOTAL2 and liquidity, and how to manage risk in SA.
Read MoreEIP-1559 Burn: ETH Supply Over Time
Learn how EIP-1559 burns Ethereum base fees, how validator issuance offsets it, and how to track net ETH supply changes using trusted dashboards.
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