ABCD on four different exchanges

It is extremely rare to find a pattern with precise and perfect proportions, therefore, we need to handle a certain degree of tolerance (delta). Notice that if you draw with precision the pattern by zooming in, write down the measurements, then delete it and do it again, it’s really difficult to get the exact same results to the 0.001 decimals

On this particular case we find a relatively acceptable ABCD pattern at Bitfinex exchange (BTCUSD - 1H TF) and comparing it with other exchanges is important to evaluate its pertinence.

The bullish ABCD is validated when an obvious reversal on the trend happens around D point.
If so, a target at C price should be achieved to confirm this harmonic pattern.

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ideal proportions
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BC: 0.618
CD: 1.271

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Bitfinex
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BC: 0.598 (delta: 0.020)
CD: 1.271 (delta: 0.000)

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Binance
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BC: 0.575 (delta: 0.043)
CD: 1.330 (delta: 0.059)

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Bitmex
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BC: 0.576 (delta: 0.042)
CD: 1.348 (delta: 0.077)

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Bitstamp
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BC: 0.569 (delta: 0.049)
CD: 1.340 (delta: 0.069)