ether.fi makes mump2p mandatory for all 12 node operators, Optimum software goes live on Ethereum mainnet

Odaily reports: Optimum has announced that its block propagation software mump2p has officially launched on the Ethereum mainnet. ether.fi previously offered the software as an optional feature, but has now mandated its adoption across all 12 of its node operators. Currently, a total of 16 node operators are running mump2p in production environments, collectively managing approximately 22,000 validator keys and over 1.4 million staked ETH, accounting for more than 3% of Ethereum's total staked supply. Partners include Blockdaemon, Everstake, P2P.org, Stakefish, and Bitcoin Suisse.

mump2p operates as a sidecar gateway, rather than replacing Ethereum's default GossipSub, it layers on top of libp2p and uses random linear network coding technology. Optimum claims that mump2p achieves block arrival speeds 2.42 times faster than GossipSub, with arrival time variance reduced by approximately 7.88 times. Optimum is led by MIT professor Muriel Médard and launched its private testnet in June 2025. The company previously completed an $11 million seed round led by 1kx and plans to expand to other high-throughput blockchains beyond Ethereum.