A candle is not data. It is a summary of data, produced by a specific process. Most chart misreadings come from not knowing the process.
Direct answer
Crypto charts display OHLC data — Open, High, Low, Close — for fixed time intervals, built by aggregating individual trades into buckets. OHLCV adds volume. That compression is the entire value of a chart and the entire source of its ability to mislead: two candles can look identical while one summarises 3,000 trades and the other four.
Start here
| If you want to… | Read |
|---|---|
| Understand how a candle is built | OHLC Charts Explained |
| Read a candle properly | How to Read a Candlestick |
| Know what volume proves | Crypto Volume Explained |
| Read a new token's chart | Reading Token Price Action |
| Work with historical data | Market History Guide |
The thing most chart guides leave out
A candle summarises every trade in an interval into five numbers. Consider two one-hour candles that render identically — open 100, high 105, low 98, close 103:
- Candle A — 3,000 trades, price moving continuously through the range.
- Candle B — 4 trades: one at 100, one at 105, one at 98, one at 103.
Your chart draws them the same way. But A describes a functioning market and B describes four transactions, possibly between two people, on a book with no depth.
This is why thinly traded tokens produce charts full of convincing technical patterns that mean nothing. There is no pattern — there are a few trades and your eye connecting them.
CoinDock's candles carry trades_count and is_closed alongside OHLCV, so you can tell A from B and know whether an interval has finished. Most charting interfaces show neither. Both are available through the public API without an account.
Where we are honest about the evidence
Charting content usually implies far more predictive power than the evidence supports. Our position:
Well supported. A chart accurately describes what traded. A long wick genuinely means price went there and came back — a fact, not an interpretation.
Weakly supported. That patterns, levels, or indicators reliably predict what happens next. Published results range from marginal edges to none, and are highly sensitive to market, timeframe, and the exact rules used. Nothing reproduces robustly out of sample.
CoinDock publishes no signals, no forecasts, and no pattern success rates. We have not run that research, and repeating someone else's uncited figure would be worse than saying nothing.
Where you see a specific win rate quoted anywhere, ask: what market, what timeframe, what definition, what period, and out of sample?
What a chart can never tell you
- The path inside a candle. Four prices, not the order they occurred in.
- Whether size was available. A price on the chart does not mean you could have traded meaningfully at it.
- How many people traded. One participant or a thousand.
- What happens next.
For the first two, the order book answers what the chart cannot — see how to read market depth.
CoinDock's market data
Candles are built from trades matched on CoinDock, at 1m, 5m, 15m, 30m, 1h, 4h, 1d, 1w.
Each carries open, high, low, close, base and quote volume, trade count, and a closed flag. Publicly available, no account required.
Guides in this pillar
Concepts
- OHLC Charts Explained
- Candlestick Chart Guide
- Crypto Volume Explained
- Support and Resistance
- Reading Token Price Action
How-to
- How to Read a Candlestick
- How to Spot Support and Resistance
- How to Use Volume on Charts
- How to Read an OHLC Bar
- How to Use Different Chart Timeframes
Questions
Related pillars
- Liquidity — the order book behind the chart.
- DEX — how AMM pricing differs.
- Listings — why new pairs produce strange charts.
Educational content. Not financial or trading advice. CoinDock publishes no signals or forecasts. Historical performance does not indicate future results.
Core Topics
OHLC Charts Explained
Everyone defines OHLC. Far fewer explain how the four numbers are produced — which is where the misreadings come from.
Candlestick Chart Guide
The anatomy is simple and worth knowing. The patterns are worth knowing too — including how weak the evidence for them is.
Crypto Volume Explained
Volume is the most quoted number in crypto and the easiest to manufacture. Here is what it measures and how to sanity-check it.
Support and Resistance
Some levels have a mechanism behind them. Many are lines drawn after the fact. Telling them apart is the useful skill.
Reading Token Price Action
A new token's chart looks like every other chart and means something completely different. Here is how to tell.
How-To Guides
Frequently Asked Questions
What is an OHLC chart?
OHLC summarises a period using Open, High, Low, and Close prices — the building blocks of candlesticks.
What is a candlestick?
A candlestick is a visual OHLC representation showing the body (open/close) and wicks (high/low).
What does volume mean?
Volume is how much value or units traded during a period — useful for confirming price moves.
Are indicators predictive?
Indicators describe history. They are not predictions of future price; treat them as context.
What timeframe should I use?
Use a timeframe that matches your horizon — short-term traders use minutes; long-term users use weeks.
What is support?
Support is a price area where buying interest has historically appeared and slowed declines.
What is resistance?
Resistance is a price area where selling pressure has historically appeared and slowed rallies.
Does CoinDock offer trading signals?
No — CoinDock provides educational content only; nothing on CoinDock is a buy or sell signal.
Glossary
Breakout
A move outside a prior range or trendline.
Candlestick
A visual OHLC chart unit with body and wicks.
Moving Average
An average price over N periods, smoothing short-term noise.
OHLC
Open, High, Low, Close — the four price points that summarise a period.
Range
A period when price oscillates between support and resistance.
Resistance
A historical price area where selling often slows rallies.
Support
A historical price area where buying often slows declines.
Timeframe
The duration of each chart bar — for example one minute or one day.
Trendline
A line drawn between price extremes to visualise direction.
Volatility
A measure of how much price moves over time.
Volume Bar
A bar chart layer showing traded volume per period.
Wick
The thin lines above and below a candle body indicating extremes.
View CoinDock Market Education
Educational chart resources covering OHLC data, volume, support and resistance, and how to read price action on USDT pairs. Educational only — no trading signals.
View CoinDock Market Education