SHA-256 Cryptographic Proof

Provably Fair
Online Poker
Verify Every Hand

The #1 complaint about online poker: "it's rigged." PlasmaPoker answers with math, not promises. SHA-256 hashing lets you verify every single hand was dealt fairly.

Don't trust us. Verify us.

Play Provably Fair Poker Download Free

How Provably Fair Poker Works

Four steps. Zero trust required. Pure cryptographic verification.

Shuffle & Hash

Before the hand begins, the server shuffles the deck using a CSPRNG (Cryptographically Secure Pseudo-Random Number Generator) with Fisher-Yates algorithm. It creates a SHA-256 hash of the complete deck order and server seed.

The hash is published to all players at the table before any cards are dealt.

Deal & Play

The hand plays out normally. Players receive hole cards, community cards are dealt, bets are placed. Throughout the entire hand, the deck order is locked — it was committed by the hash in step 1.

The server cannot change the deck after the hash is published without breaking the hash.

Reveal

After the hand completes, the full deck order, server seed, and hand number are revealed in your hand history. This is all the data you need to independently verify the hand.

Every hand history includes the verification data automatically.

Verify

Take the revealed deck order and server seed, run them through SHA-256 yourself (using any SHA-256 calculator), and compare the result to the hash that was published before the hand. If they match, the hand was fair. Period.

PlasmaPoker also provides a built-in verification tool — click 'Verify' on any hand in your history.

Technical

The Cryptography Behind the Fairness

For the technically curious. This is the same class of cryptography that secures Bitcoin, banking, and military communications.

SHA-256 (Secure Hash Algorithm 256-bit)

One-way function — given the hash, it is computationally impossible to reverse-engineer the input (the deck order).
Collision resistant — no two different inputs produce the same hash. Each deck arrangement has a unique fingerprint.
Deterministic — the same input always produces the same hash. You can verify it unlimited times.
Avalanche effect — changing a single card in the deck completely changes the hash. Partial manipulation is detectable.

CSPRNG + Fisher-Yates Shuffle

PlasmaPoker uses a Cryptographically Secure Pseudo-Random Number Generator (CSPRNG) to generate the randomness for each shuffle, combined with the Fisher-Yates algorithm for the actual shuffle. This produces a uniform distribution across all 52! (approximately 8 x 10⁶⁷) possible deck permutations.

This is the same approach used by security-critical systems worldwide. The randomness is derived from system entropy sources, not predictable seeds.

PlasmaPoker vs. Other Poker Sites

How does our fairness verification compare to the competition?

Feature	PlasmaPoker	PokerStars	GGPoker	Global Poker
Provably fair (SHA-256)	Yes	No	No	No
Verify individual hands	Yes	No	No	No
CSPRNG shuffle	Yes	Claimed	Claimed	Unknown
Third-party RNG audit	Yes	Yes	Yes	Yes
Open verification tool	Yes	No	No	No
Hash published pre-deal	Yes	No	No	No
Deck + seed revealed	Yes	No	No	No

Why Provably Fair Matters

Every poker forum, every app store review, every Reddit thread has the same question.

The Problem: "Is Online Poker Rigged?"

PokerStars Play: 2.5/5 rating, top complaints about rigged dealing
Global Poker: 2.2/5 Trustpilot, 40% one-star reviews mention rigging
WSOP: Predatory chip pricing and constant "rigged" accusations
Every free poker app has this problem. None can prove they're fair.

The Solution: Cryptographic Proof

SHA-256 hash committed before every hand
Full deck + seed revealed after every hand
Built-in verification tool — one click to verify
You don't trust us. You verify us. Math doesn't lie.

Provably Fair Poker FAQ

What does provably fair mean in online poker?

Provably fair means the poker platform uses cryptographic hashing (SHA-256) to commit to the deck order before any cards are dealt. After the hand, you can verify the hash matches the actual cards dealt. This is mathematical proof that the deal was not manipulated — it's impossible to change the deck after the hash is published without breaking the hash.

How does SHA-256 verification work in poker?

Before each hand, the server generates the complete shuffled deck using a CSPRNG (Cryptographically Secure Pseudo-Random Number Generator) and creates a SHA-256 hash of that deck. This hash is published to players. After the hand completes, the full deck order and seed are revealed. Players can hash the revealed data themselves and confirm it matches the pre-published hash.

How do I verify a hand on PlasmaPoker?

Open your hand history and click 'Verify' on any hand. PlasmaPoker shows you the pre-hand hash, the revealed deck order, and the server seed. You can copy these values and verify them yourself using any SHA-256 calculator, or use our built-in verification tool.

Is online poker rigged?

Most online poker sites use third-party RNG audits as their only proof of fairness, which requires you to trust the auditor. PlasmaPoker goes further with provably fair SHA-256 hashing — you don't need to trust anyone. You can verify every single hand yourself using cryptographic math.

Can PlasmaPoker manipulate the deck after committing the hash?

No. SHA-256 is a one-way cryptographic hash function. It is computationally impossible to find a different deck arrangement that produces the same hash. If the pre-hand hash matches the hash of the revealed deck, the deck was not changed. This is the same cryptography that secures Bitcoin.

Do other poker sites use provably fair dealing?

No major poker platform (PokerStars, GGPoker, Global Poker, WSOP, 888poker) uses provably fair dealing. They rely on periodic third-party RNG audits. PlasmaPoker is the only platform where every single hand can be independently verified by the player.

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Every hand verified by SHA-256. Every deal provably fair. Don't trust us — verify us.