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Degen Protocol USDC · ETHBase Sepolia · testnet
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Session against the house

Blackjack

Play moneyended

eafd73bd7cc68291924f2d9443eea06f

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,230 play
Returned
2,100 play
Bettor's net
-130 play
Return
94.17%

Results by hand

Final
Hands
200
played
Pace
20.6/min
overall 19.8/min
Biggest swing
-30
Seat 1 · hand 58

Each seat's running result in play, hand by hand; the dashed line marks the biggest swing.

SeatNetRateStreak
gbb-130-65.0 play/100won 2

Last hands

  1. 200Seat 1+15
  2. 199Even0
  3. 198Seat 1+20
  4. 197Even0
  5. 196Seat 1+10
  6. 195Seat 1+15
  7. 194Even0
  8. 193Even0
  9. 192Seat 1+10
  10. 191Seat 1+15
  11. 190Even0
  12. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
1501010♦4♣ 14J♦3♠10♦ 23 bust00× the bet
149107♣Q♦ 176♦4♣6♥ 16 doubled00× the bet
148108♣Q♥ 182♣2♣5♦2♣6♦ 1700× the bet
147105♣7♦9♠ 218♠3♠8♦ 19 doubled00× the bet
146102♣9♥5♥2♥ 185♦9♠ 1400× the bet
145107♥9♠ 169♠7♥J♠ 26 bust00× the bet
144104♦J♦2♠3♠ 193♦8♣A♠ 12 doubled00× the bet
1431010♣9♦ 196♦8♣K♣ 24 bust00× the bet
14210A♣A♠K♣2♦Q♣ 2410♥K♦ 20202× the bet
141106♣A♣ 17K♥K♥ 20202× the bet
140108♥5♣4♦ 178♣Q♣ 18202× the bet
13910A♦6♥ 178♦7♦A♣9♣ 25 bust00× the bet
13810A♦5♦ 167♥8♥7♣ 22 bust00× the bet
137109♠2♠ 116♣Q♣ 16 surrendered50.5× the bet
136109♠A♣ 203♦K♥9♣ 22 bust00× the bet
13510J♥2♠ 123♣K♣K♣ 23 bust00× the bet
13410A♠8♠ 199♠K♠ 19101× the bet
133107♣5♣ 12Q♣A♥ 21 blackjack252.5945× the bet
132103♥J♦2♣10♦ 25J♥J♥ 20202× the bet
131106♠2♠Q♦ 188♥2♣3♥ 13 doubled00× the bet
13010K♦2♠ 125♣K♠ 15 surrendered50.5× the bet
129108♠10♠ 183♣7♠A♣ 21 doubled404× the bet
128102♥5♦8♦K♥ 257♥8♦ 15202× the bet
127102♣J♦7♣ 197♣9♦ 1600× the bet
126106♣J♣5♠ 219♦4♣ 1300× the bet
125102♠2♥5♦5♦2♥4♠ 202♠5♥9♦ 162♥5♥Q♠ 1700× the bet
12410Q♣2♥9♣ 218♣A♣ 1900× the bet
123102♠6♥8♣2♦ 184♥3♠4♥A♠3♦ 1500× the bet
12210J♠Q♣ 205♠Q♠ 15 surrendered50.5× the bet
12110A♠10♦ 218♣9♥ 1700× the bet
12010Q♠4♣ 145♠K♣ 15 surrendered50.5× the bet
119105♠10♦7♦ 22Q♥5♥ 15202× the bet
11810Q♦9♦ 1910♥10♥ 20202× the bet
117107♣J♠ 17Q♠Q♥ 20202× the bet
116109♥10♥ 19J♠6♠ 16 surrendered50.5× the bet
11510K♠8♣ 185♣5♣8♣ 18101× the bet
114104♣Q♦10♠ 246♥J♠ 16202× the bet
11310J♠10♠ 204♦5♥8♦ 1700× the bet
11210J♠6♣6♥ 22Q♣10♥ 20202× the bet
11110K♣8♣ 1810♠Q♥ 20202× the bet
11010K♥5♦ 15A♠K♠ 21 blackjack252.5945× the bet
109109♠K♦ 199♥10♣ 19101× the bet
108105♣3♥5♣10♦ 234♣K♦ 14202× the bet
1071010♣4♥Q♠ 248♦2♥K♦ 20202× the bet
106108♦10♥ 189♠3♥2♣9♥ 23 bust00× the bet
1051010♠Q♦ 2010♣2♣10♦ 22 bust00× the bet
104102♥8♣8♥ 1810♦7♠ 1700× the bet
10310K♠5♥Q♦ 25K♣J♦ 20202× the bet
102102♥10♥Q♠ 227♣6♦ 13202× the bet
10110Q♠10♦ 207♥3♦8♦ 1800× the bet

Provably fair

Verify fairness

The session's seed decides every card. Its hash was committed before the first hand; the seed is revealed when the session ends. Each round's cards come from HMAC-SHA256 keyed by the seed over the round's number and the bettor's own seed.

Seed hash
a66427dfd155b2a2d8341755450766924745d84dd3c139a932f53db26ce33428
Seed
a6b1264f672f23dc65fcedb7602e65c6c956370acde842b66252ee01a77538e9 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
0a34443c56118059af311bf48875a22a
Commitment
Batch 61,170, Merkle root a7ea37a501bc802ef79245547774e46deb8ddba36a6392cf1dbb7f007c7112b5. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 393930177a521d7cae083ed1e7efa908c09f91492eacdf950f5febb357b20338
  2. 2588925165f9a5dfcda32ff75cfd663f62e4e1f4362f2a4da633fbc603d7f232
  3. 13466f49e34eb234175c1a9412464e00b06f28cef5eae35ca0aa57d995aa80e0
  4. 7c064b257938b53f9575c0493fb4fd1fc4c7381d54ad2ba5690b76e81ec2dd4a
  5. ebb097dbda96955640a94aff5bea4dfec1cc74d93f25c887ee70ce66ecc853c9
Checked: the seed hash proves into the root.

To check it yourself, take the session's proof:

  1. Hash the seed as above and compare it with the seed hash; prove the seed hash into the root with the Merkle path (keccak256, as for every match).
  2. For each round: round seed = HMAC-SHA256(key = seed, "degen.house.round.v1" ‖ 0x00 ‖ u64be(length of the bettor's seed) ‖ bettor's seed ‖ u64be(round)).
  3. Key ChaCha20 (RFC 8439, zero nonce) with the round seed and read little-endian 64-bit words; a card is the next word below 264 − 1 − ((264 − 1) mod 52), modulo 52.
  4. Replay the round's actions with the game's rules: the cards and the payout must match.

The replay plays every hand rebuilt this way on the server from the same data, and marks any that does not rebuild as recorded.