Ether operates within
Ethereum's account-based model, unlike
Bitcoin's
UTXO system. Each account has an ETH balance and can trigger transactions or
smart contract executions. The
Ethereum Virtual Machine (EVM) processes all operations, with each computational step having a specific
gas cost measured in
gwei (1
gwei = 0.000000001 ETH).
Gas mechanics are fundamental to Ether's utility: users specify a
gas limit (maximum computational steps) and
gas price (ETH per
gas unit). Since EIP-1559 (London upgrade), transactions use a
base fee that adjusts algorithmically based on network congestion, plus an optional
priority fee. The
base fee is burned, reducing ETH supply.
Ethereum transitioned from Proof of Work to Proof of
Stake via "The Merge" in September 2022. Validators must
stake 32 ETH to participate in
consensus, with rewards distributed for honest behavior and penalties (slashing) for malicious actions. This system achieves
finality after approximately 12-15 minutes through a process called
Casper FFG.
ETH issuance follows a dynamic model: new ETH is created as
staking rewards (approximately 3-4% APR), while EIP-1559 burns a portion of
transaction fees. When network activity is high, more ETH may be burned than issued, creating deflationary pressure. This mechanism is often called "ultrasound money" in contrast to
Bitcoin's "sound money" narrative.
Ethereum's
state transition function allows ETH to interact with smart contracts through various opcodes. The CREATE and CALL opcodes enable contract
deployment and interaction, while
SELFDESTRUCT can permanently remove contracts and their ETH from existence.