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Bitcoin L2 Dark Forest: Calculating On-Chain Arbitration Costs from BitVM Fraud ProofsIn Bitcoin's Layer 2 (L2) ecosystem, BitVM employs a fraud-proof system akin to Ethereum’s Arbitrum, ensuring off-chain computation integrity. Disputes trigger on-chain arbitration, incurring costs via a challenge-response process. These costs depend on:Number of transactions: Challenge, response, and resolution steps (e.g., 3 transactions). Transaction size: Influenced by dispute complexity and data revealed (e.g., MAST tree parts), typically 250-500 bytes each. Bitcoin fee rates: At 20 satoshis/byte, a 500-byte transaction costs 0.0001 BTC. A simple dispute might cost ~0.0003 BTC, but complex cases with multiple rounds could escalate costs. Exact figures vary with implementation and fee dynamics.
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The Bitcoin halving cuts miners' rewards, reducing income and potentially pushing smaller operators out of business. This could consolidate mining power among larger players. Core Scientific, a key North American miner, is undergoing bankruptcy restructuring. If its assets are acquired by a few dominant firms, it might intensify this consolidation, raising the risk of a computing power monopoly in North America—a region already rich in mining capacity. Such a monopoly could threaten Bitcoin’s decentralization and security. However, regulatory oversight and new market entrants might prevent this. The outcome depends on asset distribution and market reactions, requiring close attention.
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