Jonji Rewards - Battleground

Coinflip

Mines

Blackjack

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Time	Creator	Bet Amount	Side	Opponent	Status

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Number of Mines

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Blackjack Pays 3 to 2
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Game History

Coinflip

Mines

Blackjack

Time	Bet	Result	Client Seed	EOS Block #

Time	Bet	Mines	Result	Client Seed	EOS Block #

Time	Bet	Result	Client Seed	EOS Block #

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Provably Fair

Coinflip

Mines

Blackjack

How the winner is determined:

A random Client Seed is generated when the game creator makes the coinflip.
When a player (or bot) joins, we fetch the latest irreversible EOS Block # from the public EOS blockchain.
API used: https://eos.greymass.com/v1/chain/get_info
We combine: Client Seed + EOS Block # (no spaces)
We compute the SHA-256 hash of that string.
We take the last hexadecimal character of the hash and convert it to decimal (0–15).
If the number is even (0,2,4,6,8,10,12,14) → CT side wins.
If odd (1,3,5,7,9,11,13,15) → T side wins.
Note: If the last hex character is a letter (a–f), it converts as follows:
a = 10, b = 11, c = 12, d = 13, e = 14, f = 15

How to verify any game yourself:

Open a finished game → copy the Client Seed and EOS Block # from the bottom of the modal.
Use any online SHA-256 calculator:
Google SHA256 online
(Recommended: emn178.github.io/online-tools/sha256.html)
Paste the Client Seed directly followed by the EOS Block # (no spaces).
Example: ab3f9c1d2e4f5a6b7c8d9e0f1a2b3c4d1234567890123456789
Compute the hash and check the last character.
It should match the game result (even → CT side, odd → T side).

All data is from public sources — every result can be independently verified anytime.

How mine positions are determined:

A random Client Seed is generated when you place your bet.
We fetch the latest irreversible EOS Block # from the public EOS blockchain.
API used: https://eos.greymass.com/v1/chain/get_info
We combine: Client Seed + EOS Block # (no spaces)
We compute the SHA-256 hash of that string.
We take the last 8 hexadecimal characters and convert them to an integer as the initial seed.
We use a Fisher-Yates shuffle variant with LCG to select mine positions deterministically:
- Start with tiles 0–24.
- For each mine: pos = seed % remaining_tiles, add pos to mines, remove it, update seed = (seed * 1664525 + 1013904223) >>> 0.

Client Seed

EOS Block #

Number of Mines

Mine positions (0-24):

All data is from public sources — every result can be independently verified anytime.

How the deck is generated and shuffled:

A random Client Seed is generated server-side when you place your bet.
We fetch the latest irreversible EOS Block # from the public EOS blockchain.
API used: https://eos.greymass.com/v1/chain/get_info
We combine: Client Seed + EOS Block # (no spaces)
We compute the SHA-256 hash of that string.
We take the first 8 hexadecimal characters of the hash and convert them to a decimal number (initial seed).
We use a Linear Congruential Generator (LCG) to create consistent pseudo-random numbers.
We perform a perfect Fisher-Yates shuffle using the LCG random values → this creates the exact shoe used in your game.

Client Seed

EOS Block #

All data is deterministic and derived from public sources — you can always verify any game.

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