Ethereum
区块链The programmable ledger that went live in 2015, where programs run on the ledger and execute the moment their conditions are met.
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Congestion and high fees on the main chain pushed part of the demand toward higher-throughput alternatives.
As above; demand spilled over onto a compatible chain.
As above.
ERC-20 is a contract interface convention on Ethereum; issuance and transfer depend on that chain to execute.
One application's traffic filled the block space and squeezed other transactions out. Block space became scarce for the first time.
On-chain ownership records rest on Ethereum's ledger and its contract execution.
Sources
- Level AEthereum WhitepaperEthereum Foundation