Daily Microstructure Brief — Saturday, 30 May 2026

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ DAILY MICROSTRUCTURE BRIEF 2026-05-30 · Saturday · covers prior 24h UTC · peak window 13:00-16:00 ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ coinbase→okx (BTC/USD) leads executability today, past cryptocom→coinbase (DOGE/USD). TOP ROUTES (by executability) 1. coinbase→okx (BTC/USD) Median spread 0.051% · half-life 1994ms · survival @1s: 99.7% · executability 0.0% 2. coinbase→cryptocom (BTC/USD) Median spread 0.045% · half-life 1993ms · survival @1s: 99.7% · executability 0.0% 3. coinbase→okx (ETH/USD) Median spread 0.048% · half-life 1989ms · survival @500ms: 99.5% · executability 0.0% Cited data: 62969 samples across 3 routes, prior 24h UTC. SPREAD DECAY Median half-life across all routes: 1697ms. Survival @ T+1s: 83.9% of 661301 samples. Spreads > 0.40% decayed to below fee floor within 399ms median (1 samples). Half-lives tracked 7-day baselines today. BEST EXECUTION WINDOW 10:00-11:00 UTC (18:00-19:00 SGT) — 89.1% of samples survived to T+500ms above fee floor. 1.1x the 24h average. Second: 06:00-07:00 UTC — 88.5% survival. EXCHANGE BEHAVIOUR All exchanges stable — no degradation events in 24h. VS YESTERDAY Samples: 661301 (-17313) Top route: coinbase→okx (BTC/USD) median spread 0.051% Survival @1s: 83.9% (+260bps vs yesterday) Median spread: 0.027% (+0bps vs yesterday) CONSTRAINTS ON THIS DATA Spread persistence varies materially by route and hour of day. High-spread events (>0.40%) decay faster than the median. Results describe the prior 24h only — not predictive. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Bot activity — not financial advice. Every signal blockchain-verified: proofsystems.ai/signals Full archive: proofsystems.ai/brief ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━