Blockchain
Ethereum L1
Also known as: Ethereum Layer 1, Ethereum mainnet
The base Ethereum network — the L1 that Base (and every other OP-Stack rollup) settles back to via the withdrawal bridge.
Ethereum L1 is the original Ethereum network — the Proof-of-Stake blockchain operated by the global Ethereum validator set. Block time is ~12 seconds, slot time is 12 seconds, epoch is 32 slots (~6.4 minutes). Finality under PoS is two epochs (~12.8 minutes) under normal conditions.
For LearnCoin, Ethereum L1 is the ultimate trust substrate, not the direct anchor target. Credentials anchor on Base (Ethereum L2, OP Stack). Base periodically batches its state back to L1 via the OP Stack's withdrawal bridge — Base's state is committed to L1 state, and reverting a Base transaction would require reverting L1 state, which requires compromising Ethereum's consensus.
In practice: LearnCoin credential anchors inherit Ethereum L1's ~$50-billion-plus of validator stake as their security budget. An attacker willing to spend that much to forge a credential is presumably doing more profitable things with the capital.
Related terms