ON THE FUTURE OF THE BLOB MEMPOOL

Summary from the TLDR Crypto newsletter

Ethereum's PeerDAS upgrade vertically shards onchain data availability checks, meaning validators now only verify a subset of each blob, yet the blobpool still forces every node to download full blobs, threatening to overwhelm lower-resourced operators as blob counts rise. To realign with the sharded DA checks, this proposal introduces a vertically-sharded blobpool where originators gossip only assigned blob columns, governed by a free, first-price auction with refunds for slot-based “blobpool tickets” to prevent DoS attacks under high demand. This market-driven approach preserves rollup inclusion guarantees and avoids the degraded service of simple horizontal sharding, while private blob flows and CL downloads remain intact. Remaining challenges include fine-tuning auction parameters, exploring reputation-based spam defenses, and coordinating rollups, builders, and stakers ahead of implementation.