Not the most efficient way of deep coping, if performance matters, dont use this.

See: https://github.com/ethereum/eth2.0-specs/blob/dev/specs/phase0/validator.md#withdrawal-credentials Input example: 01000000000000000000000059b0d71688da01057c08e4c1baa8faa629819c2a Output example: 0x59b0d71688da01057c08e4c1baa8faa629819c2a.

See: https://github.com/ethereum/eth2.0-specs/blob/dev/specs/phase0/validator.md#withdrawal-credentials Input example: 00fccee96b30754af30208261e38df169a95aa3c722662a9df8fc057cc7d3a69 (true).

See: https://github.com/ethereum/eth2.0-specs/blob/dev/specs/phase0/validator.md#withdrawal-credentials Input example: 010000000000000000000000dc62f9e8c34be08501cdef4ebde0a280f576d762 (true).

Converts from slots to readable time (eg 1 day 9 hours 20 minutes).

Sum two numbers, and if the sum is bigger than saturate, return saturate.