ProofOfWork class

Proof-of-Work helper built for deterministic simulation and testing.

Advanced features:

• accepts a pluggable BigHash function for arbitrary hash spaces
• mine supports an optional shouldStop callback for cancellation
• verify helper to validate a candidate against a target
• utilities to compute numeric target from compact difficulty bits

Constructors

ProofOfWork({required BigHash hashFn, int? seed})

Properties

hashCode → int

The hash code for this object.

no setter, inherited

hashFn → BigHash

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

mine(String data, BigInt target, {int maxAttempts = 1000000, bool shouldStop()?}) → MineResult

Mine data until hash <= target or maxAttempts reached.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

verify(String data, int nonce, BigInt target) → bool

Verify that a nonce for data meets the target.

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

targetFromCompact(int compact) → BigInt

Compact bits -> target (toy implementation similar to Bitcoin's compact format).