Technical Comparison of Leading Bitcoin Rollups
Spark published a comparison of major Bitcoin rollups, reviewing architectures including Citrea, BOB, Strata, Starknet, BitcoinOS, B² Network, Merlin, and Botanix, with a technical overview of BitVM, bridge trust models, proof systems, and Bitcoin data availability tradeoffs.
spark.money/tools
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Bitcoin Rollup Comparison: Citrea, BOB, Starknet, and More
Bitcoin rollups execute transactions off-chain and post proofs or data back to Bitcoin L1 for settlement. Unlike Ethereum, Bitcoin lacks native smart contract verification, so rollups must rely on creative workarounds.