Incorrect maximum BTC precision?

[ar-turek]

According to this (and BTC specification in general):
https://en.bitcoin.it/wiki/Help:FAQ#How_divisible_are_bitcoins.3F
the smallest BTC unit is 10^(-8), which means the biggest acceptable decimal precision should be 8 decimal places.

Here:
https://github.com/bitpay/php-bitpay-client/blob/master/src/Bitpay/Client/Client.php#L698
a value with 8 decimal places does not pass this check unless it's rounded up to 6 decimal places, even though in theory it should be possible to pay 0.00000001BTC.

[tomaszkane]

BTW, IPN from BitPay also sends btcPrice with 6 decimal places.

[pieterpoorthuis]

Currently BitPay accepts 6 decimals. The BitPay lib follows this specification.