| flag | Package flag implements command-line flag parsing. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/transparency-dev/merkle/compact | Package compact provides compact Merkle tree data structures. |
| github.com/transparency-dev/merkle/proof | Package proof contains helpers for constructing log Merkle tree proofs. |
| log | Package log implements a simple logging package. |
| math/bits | Package bits implements bit counting and manipulation functions for the predeclared unsigned integer types. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |