ON TEMPO, PERMISSIONLESSNESS, L1 VS L2

Summary from the TLDR Crypto newsletter

Stripe's Tempo blockchain will be a fully permissionless L1 with open token deployment, transactions, and eventual validation, despite targeting institutional payment use cases. The team chose to build an L1 rather than an Ethereum L2 because global payment partnerships require a decentralized validator set for trust and neutrality, eliminating dependencies on any single platform or sequencer. Technical priorities include fast finality, multiple validators, custom transaction lanes, and stablecoin-focused architecture with native issuance rather than Ethereum bridge functionality. The approach represents a bet that mainstream crypto adoption requires truly decentralized infrastructure rather than permissioned systems, aiming to onboard traditional payment flows onto permissionless crypto rails.