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Romich | Building ArbSpread

@AutoVentureGr

Trader, investor & builder of ArbSpread. Free spread/funding research across CEXs & perp DEXs. Sharing the build—and the catches behind the numbers.

 Blockchain
arbspread.com/
Joined November 2021
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Spotting a spread is easy. Knowing whether it’s worth trading is the work. I’m building ArbSpread to put prices, depth, funding and spread history in one place. CEXs + perp DEXs. Free market data. No account needed. Research, not auto-trading. arbspread.com
Image from Romich | Building ArbSpread (@AutoVentureGr)
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Two funding rates. Two payment times. On today's BLUR WhiteBIT/Bybit route, ArbSpread counts only the nearest payment in “Next funding” when the legs settle at different times. Next event ≠ a full holding-period total. Neither is settled PnL.
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Negative funding isn't automatically a cost. T/USDT: Long KuCoin: receive +0.43% Short Bybit: pay −2.00% A rate needs a side. ArbSpread snapshot · 29 Oct, 08:39 UTC. Per-leg next-settlement estimates, not paid yet—not portfolio return.
Editorial data extract from an ArbSpread T/USDT snapshot, 29 October 2026 at 08:39 UTC. Long KuCoin: estimated next funding received +0.43 percent. Short Bybit: estimated next funding paid minus 2.00 percent. Each percentage applies to its own leg's notional. Not yet settled, not portfolio return or trade PnL. Current rates may change before settlement.

ALT Editorial data extract from an ArbSpread T/USDT snapshot, 29 October 2026 at 08:39 UTC. Long KuCoin: estimated next funding received +0.43 percent. Short Bybit: estimated next funding paid minus 2.00 percent. Each percentage applies to its own leg's notional. Not yet settled, not portfolio return or trade PnL. Current rates may change before settlement.

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I gave ArbSpread more CPU. The live feed still paused. I cut duplicate history loads and fixed snapshot delivery to busy connections. Two 55s checks: BTC update gaps peaked at 10.67s → 2.74s at my public probe. Not a guarantee. The engine is next.
ArbSpread developer note, 27 October 2026. Reviewed data extract, not an interface screenshot. Maximum gap between BTC snapshots at the public WebSocket probe: before API delivery patch 10.67 seconds, after 2.74 seconds. Two separate 55-second production checks under changing load. Same metric, zero-based bars. Not an all-user browser-latency benchmark or a long-run guarantee.

ALT ArbSpread developer note, 27 October 2026. Reviewed data extract, not an interface screenshot. Maximum gap between BTC snapshots at the public WebSocket probe: before API delivery patch 10.67 seconds, after 2.74 seconds. Two separate 55-second production checks under changing load. Same metric, zero-based bars. Not an all-user browser-latency benchmark or a long-run guarantee.

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“0.5%+” now isn’t “0.5% for 10s.” This ArbSpread view combines a current-spread filter with 10s above 0.2%. The timer answers a different question. Its threshold needs to stay visible. Saved UI · 26 Oct, 07:38 UTC · before fees.
Editorial data extract of saved ArbSpread settings, 26 October 2026 at 07:38 UTC. Current-spread filter: 0.5%+. Selected time filter: 10 seconds above 0.2%. Different thresholds; these settings do not certify 0.5%+ for 10 seconds. Before fees, research not execution.

ALT Editorial data extract of saved ArbSpread settings, 26 October 2026 at 07:38 UTC. Current-spread filter: 0.5%+. Selected time filter: 10 seconds above 0.2%. Different thresholds; these settings do not certify 0.5%+ for 10 seconds. Before fees, research not execution.

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Online doesn’t mean every source is healthy. This ArbSpread snapshot shows Online alongside 24 healthy venues and 4 flagged slow. That’s why I keep venue-level status separate. 25 Oct, 09:29 UTC. Collector-status labels—not an exchange uptime or execution-speed benchmark.
ArbSpread saved UI data extract, captured 25 October 2026 at 09:29 UTC. Page status: Online. Venue coverage: 24 healthy venues and 4 flagged slow. Different status scopes. These are collector-status labels, not an exchange uptime or execution-speed benchmark.

ALT ArbSpread saved UI data extract, captured 25 October 2026 at 09:29 UTC. Page status: Online. Venue coverage: 24 healthy venues and 4 flagged slow. Different status scopes. These are collector-status labels, not an exchange uptime or execution-speed benchmark.

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Green entry. Red round trip. BMT, Gate → Bybit: +2.081% entry spread. Market entry + immediate exit: −$0.54 on $1,000. Different metrics—not 2% profit. ArbSpread capture: 24 Oct, 08:52 UTC. Best-quote estimate; fees/funding excluded. Depth and moves can worsen it.
ArbSpread data extract from 24 October 2026 at 08:52 UTC. BMT/USDT, long Gate and short Bybit. Entry ask-to-bid spread +2.081%. Market entry followed by immediate exit is estimated at minus 0.054%, or minus $0.54 on $1,000 total virtual capital. These are different metrics, not a trade result. Best quotes; fees and funding excluded. Depth and market moves may worsen the result.

ALT ArbSpread data extract from 24 October 2026 at 08:52 UTC. BMT/USDT, long Gate and short Bybit. Entry ask-to-bid spread +2.081%. Market entry followed by immediate exit is estimated at minus 0.054%, or minus $0.54 on $1,000 total virtual capital. These are different metrics, not a trade result. Best quotes; fees and funding excluded. Depth and market moves may worsen the result.

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$IRYS is ripping today. Venues aren’t quoting the same price. I’m comparing its routes in ArbSpread: entry spread, depth and next funding. The move gets my attention. The route still needs checking. Recorded 23 Oct, 19:37 UTC. Before fees—not PnL.
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IRYS follow-up: a different route—KuCoin → Binance. Saved open simulation: +3.51% on $1,000 total, incl. $0.74 funding. Not realized profit. Fees, borrow, transfers and liquidation excluded. arbspread.com/s/iXgZGR3_26l-…
Image from Romich | Building ArbSpread (@AutoVentureGr)
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A route label isn’t a permissions check. “Short” in my scanner identifies the sell leg at the bid—not confirmation that the venue offers borrowing, margin or the size you need. Comparing prices and being able to open the position are different checks.
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Two venues. I don’t add their volumes. My route volume uses the smaller 24h figure. Depth stays separate: past trading isn’t liquidity waiting for me now. AXIS · 23 Oct, 06:31 UTC. Before fees. Funding is projected, not earned. Not a trade I took.
ArbSpread AXIS/USDT route snapshot, 23 October 2026 at 06:31 UTC. Long edgeX, short Bybit; ask-to-bid spread +1.68% before fees. Above-0.2% episode 7h 24m; six-hour chart. Funding difference / 24h -4.98%, a projection at current rates, not trade PnL. Raccoon illustration on the right.

ALT ArbSpread AXIS/USDT route snapshot, 23 October 2026 at 06:31 UTC. Long edgeX, short Bybit; ask-to-bid spread +1.68% before fees. Above-0.2% episode 7h 24m; six-hour chart. Funding difference / 24h -4.98%, a projection at current rates, not trade PnL. Raccoon illustration on the right.

Detail of the same saved AXIS route snapshot. Min 24h volume $221,815.26; buy and sell prices 0.2676 and 0.2721. Funding difference / 24h -4.98%. Depth 0.1% is labeled $317 and $355. Page time 08:31 AM in Madrid equals 06:31 UTC. These are research data, not guaranteed fills.

ALT Detail of the same saved AXIS route snapshot. Min 24h volume $221,815.26; buy and sell prices 0.2676 and 0.2721. Funding difference / 24h -4.98%. Depth 0.1% is labeled $317 and $355. Page time 08:31 AM in Madrid equals 06:31 UTC. These are research data, not guaranteed fills.

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I’d rather leave a hole in a chart than hide a hole in the data. In my spread history, missing observations stay missing. I don’t shift later points back or fill in the gaps. A smoother line isn’t always a better answer.
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A 90-hour spread isn’t a 90-hour win. This ZIL snapshot makes me ask why the gap persists—not assume it will close when I need it to. I flag long-running spreads in my scanner. A timer isn’t a track record. Before fees. Not a trade I took.
ArbSpread ZIL/USDT route snapshot, 22 October 2026 at 08:56 UTC. Long WEEX, short KuCoin. Ask-to-bid spread +1.22% before fees; 90 h 53 min on the above-0.2% episode timer. Six-hour spread chart. Funding difference / 24h +0.032%, not trade PnL. A raccoon illustration is on the right.

ALT ArbSpread ZIL/USDT route snapshot, 22 October 2026 at 08:56 UTC. Long WEEX, short KuCoin. Ask-to-bid spread +1.22% before fees; 90 h 53 min on the above-0.2% episode timer. Six-hour spread chart. Funding difference / 24h +0.032%, not trade PnL. A raccoon illustration is on the right.

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Same funding rate. Different clock. Two matching percentages can still mean a payment on one leg before the other settles. That’s why I keep settlement times beside the rates in my scanner. A rate difference alone misses the clock.
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“BEST” at what? In my scanner, it means the biggest ask-to-bid spread—not the best net outcome. Funding, fees, depth and the exit can change the choice. I want the ranking to start the research, not finish it. MEW snapshot · 21 Oct, 06:38 UTC. Not trade PnL.
ArbSpread MEW/USDT route snapshot at 06:38 UTC on 21 October 2026. Long OKX, short Bybit. Ask-to-bid spread +2.10% before fees; 6h 16min above 0.2%. The card labels funding difference / 24h as -1.11%; this is not trade PnL. A six-hour chart combines candle-close history and saved ask/bid observations. A raccoon illustration is on the right.

ALT ArbSpread MEW/USDT route snapshot at 06:38 UTC on 21 October 2026. Long OKX, short Bybit. Ask-to-bid spread +2.10% before fees; 6h 16min above 0.2%. The card labels funding difference / 24h as -1.11%; this is not trade PnL. A six-hour chart combines candle-close history and saved ask/bid observations. A raccoon illustration is on the right.

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The smallest detail I care about in a scanner: ≥. In my depth column, it means the venue returned only part of the requested range. A lower bound—not an exact total. I’d rather show the limit of the data than make an incomplete snapshot look complete.
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+2.65% looks better than +0.94%. One is 24h at current funding rates. The other is the route’s settled funding over the past 24h. I want that difference obvious before anyone reads the bigger number as a result. LRC snapshot. Funding only, not trade PnL.
Image from Romich | Building ArbSpread (@AutoVentureGr)
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Zero trading fees. Still a $12 bill. I set all four fees to zero in ArbSpread’s farming calculator. Spread, slippage, net funding and transfers stayed. I want the full-cycle cost visible before the points look like profit.
Image from Romich | Building ArbSpread (@AutoVentureGr)
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The spread was over 2%. Depth within 0.2%? Just tens of dollars. And a delisting warning. I want those details visible in ArbSpread before the green number starts looking like a trade.
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The spread doesn’t care whether the venue is a CEX or a DEX. So I stopped splitting the search. ArbSpread now shows both in one view, including CEX → DEX routes. Find the route. Then check whether it’s worth trading.
Image from Romich | Building ArbSpread (@AutoVentureGr)
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