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SIGNAL
504

We track the footprints of large orders.

Most data is noise. 504 is the gateway timeout, the moment the signal is lost. Signal504 keeps listening where others time out.

See a year of zones
Inside the studio

One chart, read in one tap

We filter the market's data down to one map of supply and demand zones.

BTC / USDT · PAST EXAMPLE
Zone indicator

Supply and demand zones

Every zone on the chart, from birth to end.

BTC / USDT · PAST EXAMPLE
Zone card

Tap a zone

Its band, its birth and every time price came back.

Candle card

Tap a candle

The money behind every candle, exchange by exchange.

BTC / USDT · PAST EXAMPLE
Wick footprint

Where big orders were absorbed

Wicks where heavy selling or buying met resting orders and price came back.

Zone history

Every zone keeps its record

Two past zones, picked by us. Each arrow is a turn.

Every zone ends one day. The chart below shows where.

The chart

A year of zones, as they played out

This is the members' chart, three weeks behind. Every box is a zone the rule found, drawn from the candle it was born on to the close that ended it. Every triangle marks a time the zone held price. Tap a box for its record. The orange bands are wick footprints: wicks where heavy market selling or buying was absorbed and price still came back. Tap one for the dollars and coins behind it.

Loading the chart…

▲ ▼ The zone held price. Price came into the box, no 6h candle closed through it, and price left the way it came: ▲ under a demand zone, ▼ over a supply zone. A 6h close through the box ends the zone.

Drag to move, pinch or drag the price axis to zoom. Tap a zone or a candle for its facts. All times UTC. The last three weeks and the live candle are on the live chart.

Membership

The live chart

Signal504 Studio Chart

10 USDC a month

The chart you saw above, live: every zone to the minute, the wick footprints, the forming candle, the candle card. Pay once for the months you want. No subscription, nothing renews.

  • Pay for 1 to 12 months
  • Pay in USDC on Solana
  • Nothing renews

Opening soon. Write to us through the contact form to be told first.

What you get:

  • Zone indicatorevery live supply and demand zone on the Bitcoin chart
  • Zone cardits band, its birth, every touch and every time it held
  • Zone historyfinished zones stay on the chart
  • Wick footprintswhere big market orders were absorbed, in dollars and coins
  • Candle cardspot and futures buyers against sellers
  • Futures dataopen interest, forced closes and funding
  • Coinbase gapthe US price against Binance
  • Aggregated volumefrom 6 exchanges
  • Live candleprice every 10 seconds
  • Who is activebig and small orders, every 5 minutes
  • 6H, 1H and 15M candleszoom into any move
  • USDT or USDCthe pair you can trade
  • Light or darka white chart or a black one
  • Phone and desktopone login, every screen
Questions

FAQ

Does Signal504 give trading tips or investment advice?

No. Signal504 is Bitcoin market data and analytics: a chart with a zone indicator and the market data behind every candle. It sends no trading tips and no buy or sell calls. It does not know your situation and does not tell you what to do.

Why the name Signal504?

Bitcoin's price is noisy, and our job is the signal inside it. 504 is the "gateway timeout" error, the moment a signal gets lost; we find the signal where others time out. It is also a Bitcoin block: block 504 was mined on 14 January 2009, days after the network started.

Which markets?

Bitcoin only. The chart shows BTC/USDT or BTC/USDC, whichever you pick.

How often does the chart update?

Price moves live and the forming candle updates every 10 seconds. The live view of the last candle, the last minutes and who is active, refreshes every 5 minutes. 1-hour and 15-minute candles are added as they close.

How exact are the numbers?

Sites that add up every exchange show bigger totals for forced closes and open interest because they count more venues. On 16 October 2026 we recomputed the candles, the buying and selling, funding, forced closes and the Coinbase gap from the exchanges' own data, and they matched.

What are the orange bands?

Wick footprints. A wick where market orders sold far more bitcoin than they bought, or bought far more than they sold, and price still closed back: resting orders absorbed it. The orange band is where it happened, the line inside is where most of the coins traded. Tap one for the dollars and coins absorbed, futures against spot and every wick. They come from every Binance futures and spot trade.

Where does the data come from?

Public exchange data. Binance: the chart, spot and futures buying, open interest, funding and the wick footprints. Binance, Bybit and OKX: big and small futures orders. Binance, Bybit, OKX and Aster: forced closes. Coinbase: US spot buying and the US price. Spot volume from six exchanges: Binance (USDT and USDC), Bybit, OKX, Coinbase, Bitget and Kraken. Every line on the candle card names the exchanges it covers.

Do I need chart experience?

No. Tap a zone or a candle and it tells you what you are looking at, in plain words.

How do I become a member?

Enter a nickname and your email and we'll send you the payment details. It's 10 USDC a month: you pay once in USDC on Solana from any wallet, for as many months as you want, 1 to 12. 60 USDC is six months. As soon as it arrives, your membership starts and we email you your login.

Can I add months later?

Yes. Write to us before your time ends and we send you the payment details. The new months are added to the end.

Why is the chart on this page three weeks behind?

So you can see how the zones played out before you pay, with nothing hidden. The live chart with the last three weeks and the forming candle is for members.

How do I contact you?

Through our contact form. We answer by email.

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Signal504 · how to read the chart

Chart explained

What you see

Bitcoin against USDT on Binance. The chart opens on 6-hour candles (00:00, 06:00, 12:00 and 18:00 UTC). The zones are always the 6-hour zones. Green boxes are demand zones, red boxes are supply zones. Every box is drawn by one fixed rule. Nobody draws them by hand.

What a zone is

A demand zone is the last quiet 6h candle before a strong rise. A supply zone is the last quiet 6h candle before a strong drop. A strong move is a candle much bigger than the ones before it that carries price a long way in one go. The box covers the quiet candle from its low to its high and starts at the candle it was born on.

When a zone dies

A zone dies when one 6h candle closes beyond its far edge: below a demand zone, above a supply zone. A wick through the box does not kill it, and neither does an hour that closes through it. Only the 6h close counts. Tap a zone to see the exact price that ends it.

Fresh or tested

Fresh means price has not come back into the box since it was born. Tested means it has. The zone card shows how many times, and how many of those times the zone held.

The triangles: where a zone held price

Every time price comes back into a zone, the chart counts a touch. A touch starts with the first 6h candle that reaches into the box and lasts until a 6h candle sits fully outside it, more than 0.3 % away. A few candles crawling along the edge are one touch.

The zone held when no 6h candle closed beyond its far edge during the touch and price left the box on the side it came from. How far price went afterwards does not matter. The chart marks every hold with one triangle on the candle that reached deepest into the box: ▲ under the candle at a demand zone, ▼ over the candle at a supply zone.

A touch that ends with a 6h close beyond the far edge ends the zone and gets no triangle. The labels count it all: held 8 of 9 means price came back 9 times and the zone held 8 of them.

What our tests found

We tested 6h demand zones on Binance data since 2018 against random price levels at the same distance. In the first weeks after price reaches a zone, it behaves like any other level. The difference shows later: zones that held kept holding for months about twice as often as the random levels. A zone is a place to act and to watch the 6h close. It is not a forecast.

Wick footprints: the orange bands

An orange band marks a wick where market orders sold far more bitcoin than they bought (a demand footprint) or bought far more than they sold (a supply footprint), and price still closed back. Resting orders absorbed it. Wicks close together merge into one band, and the solid line inside is where most of the coins traded.

Tap a band for the dollars and coins absorbed, futures against spot, every wick and how often price came back. A band ends the same way a zone does. The Footprint switch shows or hides them. The data: every Binance futures and spot trade.

Ended zones

A zone that ended stays on the chart in its colour, drawn from its birth to the 6h close that ended it, with its record on the label: how many days it lasted and how many times it held price. A triangle marks every time it held price. Tap the box for the full record.

Volume

The bars at the bottom show how much bitcoin traded in each candle. Volume shows how many took part in a move. In our tests it did not show where price goes next.

The candle card

Click a candle, or tap it on a phone, to see what happened in it. On a computer the card stays where it opened; on a phone it sits at the bottom of the screen. Close it with its ×. The zone + candle facts button in the header, or in the bar under the chart on a phone (the small candles with a pointer) switches the cards on and off for the whole page. Every line describes the candle. None of them predicts the next one: in our tests none gave a reliable edge, and forced closes are too new to test.

Traded. The bitcoin traded on Binance in the candle, and how that compares with the usual: the middle value of the 20 candles before it. All big exchanges adds up Binance, Coinbase, OKX, Bybit, Bitget and Kraken spot, so you can see whether a big candle was big everywhere.

Spot buyers − sellers. Bitcoin bought by buyers who took the asking price, minus bitcoin sold by sellers who took the bid, on Binance spot. A plus means buyers were more eager than sellers.

Futures buyers − sellers and open interest. The same on Binance futures, and how many futures positions were opened (plus) or closed (minus). Rising open interest while price falls means new short bets. Falling open interest means traders leaving.

Forced closes. On Binance, Bybit, OKX and Aster (15-minute candles: Bybit, OKX and Aster; Binance reports by the hour). Leveraged positions the exchanges closed by force when the trader ran out of margin. Longs are forced to sell into a fall, and shorts are forced to buy into a rise. A drop with large forced long closes was partly a chain reaction, not only real selling. We have these since 7 September 2026.

Funding. A fee futures traders pay each other every 8 hours. The card shows the rate paid for the 8-hour period that covers most of the candle; until that period settles, the rate so far. Positive means longs pay shorts because most traders are long. Negative means shorts pay longs. It shows which side the borrowed money is crowded on. We have it since May 2026.

Coinbase vs Binance. The average price gap in the candle between Coinbase, the main US exchange, in US dollars, and Binance in USDC, a coin pegged to the dollar. Coinbase higher means US buyers were paying more than the rest of the market. Coinbase lower means US selling. We have it since November 2025.

The last line names what pushed the candle, for example futures shorts opening while spot sold too. Older candles show only the lines we have data for.

Text on and off

Text off hides every word on the chart, the zone labels, the volume count and the live mark, and leaves the candles and the zones. Zone + candle facts still opens the cards. Your choice is remembered on this device.

The colours

Green candles closed higher, red candles closed lower. On the cards green is buying and red is selling: shorts forced to buy back are green, longs forced to sell are red, Coinbase above Binance is green. Volume, open interest and funding are not coloured, because on their own they do not say up or down.

The USDT gap

This chart is priced in USDT. When USDT trades above the US dollar, a low that stops just above a zone here may have reached it in dollars.

USDT or USDC

The USDT / USDC button switches the candles between Binance BTC/USDT and Binance BTC/USDC, the pair you can trade from Europe. The zones are found on BTC/USDT and are moved by the gap between the two pairs at the last closed candle, so a box sits on the same bitcoin price in both. Your choice is remembered on this device.

What we tested and dropped

Indicators (RSI, MACD, Bollinger bands, Fibonacci levels), named chart patterns, order-book walls and minute candles as signals, and zones drawn on the 4h and 1h charts showed no edge in our tests since 2024. The 1-hour and 15-minute candles and the live view of the last candle are here to watch how a 6-hour candle forms. We claim no edge for them; the zones and the 6-hour close stay the rule.

What this chart is not

It is not a forecast and not advice. Nobody can see where large orders sit or when they arrive. A fall that takes minutes shows in no candle before it.