ether.fi Mandates 12 Node Operators to Adopt mump2p, Optimum Software Launches on Ethereum Mainnet

Optimum has announced that its block propagation software mump2p has officially launched on the Ethereum mainnet. ether.fi has now mandated all 12 of its node operators to adopt this software. Currently, there are 16 node operators running mump2p in production, managing approximately 22,000 validator keys and over 1.4 million staked ETH, accounting for more than 3% of the total staked amount on Ethereum. Partners include Blockdaemon, Everstake, P2P.org, Stakefish, and Bitcoin Suisse. mump2p operates as a sidecar gateway, not replacing Ethereum's default GossipSub but layering on top of libp2p and utilizing random linear network coding technology. Optimum claims that the block arrival speed of mump2p is 2.42 times faster than GossipSub, with an arrival time variance reduced by approximately 7.88 times. Optimum, led by MIT professor Muriel Médard, launched its private testnet in June 2025, having previously completed a $11 million seed round led by 1kx, and plans to expand to other high-throughput blockchains after Ethereum.

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