What is DeFi? How decentralized finance works Decentralized finance, usually called DeFi, is software that lets you use financial services through blockchain-based smart contracts. A wallet signs the instructions, and the contract applies its published rules for a swap, loan,…
solc compiles Solidity source into the artifacts a deployment tool needs, including an application binary interface (ABI) and EVM bytecode. I ran node compile.js and recorded solc 0.8.36 producing a Greeter ABI with two entries and a bytecode prefix in…
Blockchain is a system for recording and sharing data. Cryptocurrency is a digital asset that can use such a system to track ownership and transfers. Bitcoin made the two terms famous together, which is why they are often confused. The…
The best blockchain platform for a decentralized application depends on the contracts you need to run, the wallet and developer tooling you can support, and where the application needs to connect. Ethereum, Base, Polygon, BNB Smart Chain, and Solana each…
Blockchain in supply chain management is useful when independent organizations need to share a tamper-evident history of a product or shipment. I checked the current GS1 EPCIS standard while preparing this update because a ledger only helps after every participant…
Blockchain in oil and gas is most useful when several companies need the same record of a trade, shipment, inspection, or settlement event. It does not make field data correct on its own, but it can preserve an agreed record…
Blockchain in the automotive industry is useful when several organizations need to verify the same vehicle or component event without giving one participant unilateral control of the record, I ran the hash example below with Node.js 24.18.0 to show the…
Blockchain in agriculture is most useful when several businesses need to share the same record of a food item’s journey and no single business should control every edit. A QR code alone cannot prove a product’s origin, but a traceability…
How Blockchain Is Used in Healthcare Blockchain in healthcare is most useful when several organizations need to verify the same event without giving one organization unchecked control of the record. It can support drug traceability, consent logs, clinical-trial provenance, and…
A blockchain consensus algorithm decides which proposed ledger update the network accepts and when that decision is final enough to build on. The useful question is not which acronym sounds safest. You need to know who can validate, what resource…
