Book Duplex (@bkdplx) header
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2 Books. 1 Signal.

Joined April 2013
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Book Duplex flagged PARTI/RAVE with a high Pair Scanner score. The Cartesian view revealed clear absorption—signaling the rally was being contested. Moments later, the pair began to mean revert. Microstructure speaks. BkDplx listens.
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We've made significant feature implementations to BkDplx including: 1) Dashboards: monitor multiple synthetic pairs in the main panels. Right-clicking a pair in the scanner automatically creates a new dashboard with the selected pair. 2) Cartesian coordinate system: In addition to snapshots in the scanner, you can monitor how pairs are tracking against each other. Right clicking on a data-point in the cartesian also creates a new dashboard with the associated pair, as well. 3) Token categories: add/remove coins for a specific sub-sector to the universe of assets in the scanner. No rest for the weary, but we are very close to realizing the vision of what an ideal BkDplx v1 looks like and couldn't be prouder.
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This was screaming long before price moved. Not from price. From participation shifting + aggressive demand stepping in. When both sides stop agreeing, the move is already decided.
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This is exactly the use case. Not just seeing price — Seeing how liquidity behaves underneath it. Appreciate you taking the time to dig in.
Just started dwelling in @bkdplx terminal and boy the this shit is crazy, the level of granularity..! i'm gonna have so much fun looking for market behaviors and orderflow patterns in the coming days
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SLS-raw and -gravity monitors along with the anomaly strip were able to get ahead of SIREN/NIGHT sell off.
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Same signal, same story.
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One of the biggest advantages of building in public: we actually listen. User suggestion → Discussion → Feature shipped Pair scanner is getting upgraded based directly on feedback. This is how BkDplx will be built.
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Co-sign.
You know who would benefit greatly from @bkdplx? The Cartel that implements cartel_special.exe — on less liquid pairs, the MM’s algorithm leaves a nasty footprint on BkDplx. Easier to find targets to run the special on. Dear Cartel, we would be happy to be your accomplice.
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The private beta discord is getting royal treatment. If you haven't applied and are interested in how the primitives can be used to further extent than what the wiki docs provide, apply for access at bkdplx.com
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For HYPE/SOL, someone likely went too heavy on buys, and you're witnessing the aftermath in an attempt to give him to exit his position. SLS raw (top monitor) is consistently red meaning the MM is ok if the buyer wants to add, but mostly blue (DEMAND) underneath further from quote. MM wants to catch a potential exit from the buyer.
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First feedback from private beta: “Really is the first of its kind that I’ve seen” We’re not building another trading tool. We’re building a way to read markets through liquidity and flow. Early days — but this is exactly the signal we’re looking for. Apply → bkdplx.com Docs → wiki.bkdplx.com
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SLS monitors have picked up a new market participant in the books for ETH/BTC. Can you spot it?
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Book Duplex Docs are live: wiki.bkdplx.com This isn’t documentation. It’s a system for learning market structure. Every primitive answers a question: • Where are we? • What does liquidity allow? • Who is actually acting? And every tutorial turns that into deterministic reasoning: IF structure + flow align → continuation IF they conflict → traps, reversals You’re not learning indicators. You’re learning how to read pressure, friction, and participation.
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Net imbalance, SLS feed, and log ratio depth on DEMAND side near quote for SIREN/RIVER are all pinging red/negative. The kicker was the SUPPLY side log ratio depth wall increasing probability of a SIREN/RIVER selling off. Again, we'll have documentation and tutorials for those wanting to learn about our ratio microstructure primitives.
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There it is.
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GM. We’ll be reviewing Book Duplex private beta access on a rolling basis this week. Appreciate all the inbound — from those new to microstructure to full-time traders and even institutional desks. More soon.
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We’re opening a small private beta for BkDplx. This isn’t for indicator traders. It’s for people who think in: • liquidity • imbalance • execution Takes ~30 seconds to apply. Access will be limited. docs.google.com/forms/d/e/1F…
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We stopped before confirmation of the move, but you get the picture. If you were shy because you weren't sure, no worries. These are non-contemporary primitives; but the beauty is that they are primitive, so they are rooted in first-principles.
What's next for ETH/BTC?
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What's next for ETH/BTC?
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