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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
10010J♠8♣ 188♠J♦ 18101× the bet
99107♦Q♦ 175♦8♦3♥8♦ 24 bust00× the bet
981010♥J♥ 207♠10♦ 1700× the bet
97109♣3♣J♣ 2210♣J♥ 20202× the bet
96107♣5♦2♠A♦6♣ 212♣9♦Q♦ 21 doubled202× the bet
95104♦10♦10♣ 242♥J♣ 12202× the bet
9410Q♥K♣ 209♦3♥5♦ 1700× the bet
93108♠4♥ 127♣6♣Q♠ 23 bust00× the bet
921010♦2♠ 1210♠6♣ 16 surrendered50.5× the bet
91109♥6♦ 156♦6♣Q♦ 22 bust00× the bet
90106♦5♣4♥7♦ 22A♠4♠9♦ 14 doubled404× the bet
89105♦5♠4♥2♠6♣ 226♦2♣6♠ 14202× the bet
8810Q♠Q♠ 202♣J♠5♠ 1700× the bet
87102♣J♣2♦Q♠ 244♣3♠Q♦ 17202× the bet
86107♦5♥7♦ 19A♦7♦ 1800× the bet
85105♣6♥K♦ 21J♠5♣ 1500× the bet
8410A♠2♠9♥2♠6♣ 202♠J♥9♠ 21202× the bet
8310K♥6♣ 165♣J♦ 15 surrendered50.5× the bet
8210K♦6♠K♦ 267♦10♥ 17202× the bet
8110K♣A♠ 213♣J♥ 1300× the bet
8010K♥3♠ 13Q♦4♦8♣ 22 bust00× the bet
79106♥A♠ 179♣4♠ 1300× the bet
7810K♠K♦ 2010♣6♦ 16 surrendered50.5× the bet
77108♦A♦ 194♠4♣9♥ 1700× the bet
76107♣2♦ 97♥8♦A♠8♥ 24 bust00× the bet
7510Q♥10♣ 2010♥A♦ 21 blackjack252.5945× the bet
7410K♥J♠ 208♥7♦ 15 surrendered50.5× the bet
731010♠A♦ 212♣9♣ 1100× the bet
72108♣3♠10♥ 215♥J♣3♥ 1800× the bet
7110A♣2♠ 13A♠4♠7♣K♦ 22 bust00× the bet
7010J♦J♥ 207♠9♣ 16 surrendered50.5× the bet
69107♠10♠ 17Q♣J♣ 20202× the bet
6810Q♥3♣ 13K♦3♦A♣Q♦ 24 bust00× the bet
67105♣5♣Q♦ 20J♣5♠ 1500× the bet
66107♥2♣2♣K♣ 21Q♦3♦7♥ 2000× the bet
651010♣A♦ 212♣3♣ 500× the bet
6410J♠J♥ 205♣4♣9♣ 1800× the bet
631010♠Q♥ 2010♣10♦ 20101× the bet
6210K♣8♥ 183♦K♥10♦ 23 bust00× the bet
6110K♠2♥ 122♦2♦Q♦K♦ 24 bust00× the bet
6010K♠K♦ 20J♥A♣ 21 blackjack252.5945× the bet
591010♥10♥ 20J♣6♠ 16 surrendered50.5× the bet
58106♥4♦6♦2♦ 189♥2♥5♣ 16 doubled9♣8♣ 1700× the bet
57103♦J♣5♣ 18A♦5♣2♥ 18101× the bet
56109♥3♠A♥Q♦ 2310♠Q♥ 20202× the bet
5510Q♥4♠7♣ 2110♦2♣3♦2♥ 1700× the bet
54105♥A♠7♦A♦Q♣ 2410♥J♥ 20202× the bet
53102♥6♦K♠ 187♠10♣ 1700× the bet
5210J♣8♠ 187♣K♣ 1700× the bet
5110J♠J♦ 20J♥2♠Q♦ 22 bust00× 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.