Anatomy of a Valid Order Block in Smart Money Concepts
Most candles on a chart are not order blocks, and marking every one of them is how beginners end up with a screen full of useless boxes. In smart money concepts a valid order block has to pass a few plain tests: the right candle, a violent move away from it, a level broken by that move, and no visit back since.
The four checks
- The last opposing candle. For a bullish block, the final down candle before the rally; for a bearish one, the final up candle before the drop.
- A strong move away. One or two long candles, not a slow drift. SMC traders call this displacement, and it usually leaves a gap in the chart where price moved so fast it skipped levels.
- A level actually broken. The move must push past the previous swing high or low. A rally that stops short of the last peak has not changed anything.
- Untouched since. If price has already come back into the box and carried on, the zone has been used - "mitigated", in the jargon - and the next visit means much less.
How do you draw the box?
Take the candle's body - its open and close - and stretch the rectangle to the right. The conservative version includes the wick, which gives a wider zone and a safer line to be wrong beyond. Either is fine as long as you pick one and keep using it, because consistency is what makes your own results readable later. On Ethereum's four-hour chart a block is typically a band of twenty or thirty dollars wide, not a single price.
When does a block stop counting?
When price closes through it and keeps going. At that point the zone failed, and treating it as support anyway is the most common way traders lose money with this method. Age matters too: a block from three months ago on a one-minute Solana chart is a historical curiosity, not a level.
Before marking anything live, scroll back a few weeks and test the four checks on candles you can already see the outcome of - it costs nothing and sorts the real zones from the decoration fast. Background in what order blocks are, and the failed case in order blocks and breaker blocks.