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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
200108♥J♣ 18Q♠A♠ 21 blackjack252.5945× the bet
199109♦10♥ 192♣Q♥7♣ 19101× the bet
198105♥8♦10♦ 232♥7♥K♦ 19 doubled404× the bet
197109♠4♣ 1310♠5♦J♣ 25 bust00× the bet
196102♣3♣9♠10♠ 24K♥J♦ 20202× the bet
195104♥8♥ 12A♦K♠ 21 blackjack252.5945× the bet
194102♠8♣K♦ 207♠J♦ 1700× the bet
19310A♣K♣ 2110♠9♦ 1900× the bet
192109♦6♠8♥ 232♣6♦10♠ 18202× the bet
19110J♦4♦ 1410♥A♣ 21 blackjack252.5945× the bet
19010A♦5♠5♥ 21Q♦5♦4♣ 1900× the bet
189109♦A♠ 20K♥J♣ 20101× the bet
18810K♠2♥J♦ 229♠A♣ 20202× the bet
18710J♣5♦J♣ 25Q♥J♣ 20202× the bet
18610A♥9♥ 202♦10♦5♥ 1700× the bet
185108♠9♣ 17K♥K♠ 20202× the bet
184105♥7♠7♦ 193♠Q♦ 1300× the bet
1831010♥Q♠ 203♣6♠3♠K♦ 22 bust00× the bet
18210K♦4♣7♣ 21A♥5♠4♦ 2000× the bet
181104♠2♥A♥ 176♣3♦8♥ 17 doubled202× the bet
180106♣Q♦8♥ 246♣2♠5♦ 13202× the bet
179106♥4♦6♥Q♦ 2610♥K♦ 20202× the bet
178105♣J♠A♥8♦ 24K♣8♠ 18202× the bet
17710A♠7♥ 18K♠7♣ 1700× the bet
17610K♥2♦A♣10♥ 232♠A♦8♠ 21202× the bet
175107♠9♣10♣ 2610♦9♠ 19202× the bet
174108♠9♥ 174♥A♣9♥2♥4♣ 20202× the bet
173107♠K♠ 17J♣4♠3♣ 17101× the bet
172107♠5♦ 12J♦4♦10♦ 24 bust00× the bet
171108♣9♠ 174♣J♥6♥ 20202× the bet
170108♠4♠5♦ 17J♦9♥ 19202× the bet
169103♣6♦9♦ 18J♦2♠A♣ 1300× the bet
16810J♣9♦ 19A♥6♠2♠ 19101× the bet
167106♣A♦ 174♠7♦10♣ 21 doubled404× the bet
166105♣10♥10♥ 259♥6♣ 15202× the bet
165109♦10♥ 1910♣A♥ 21 blackjack252.5945× the bet
16410J♣7♥ 178♥6♥Q♠ 24 bust00× the bet
1631010♥5♣ 1510♣6♣ 16 surrendered50.5× the bet
162105♣4♥9♦ 186♦3♣J♥ 19 doubled404× the bet
161109♠A♣ 2010♠9♠ 1900× the bet
1601010♣4♦9♥ 235♦6♦9♠ 20 doubled404× the bet
15910J♦6♣7♥ 236♦6♦6♣ 18202× the bet
158108♦4♣K♠ 228♦3♣K♦ 21 doubled404× the bet
157107♣3♥ 10J♣4♥J♥ 24 bust00× the bet
156107♦6♦10♠ 23K♥10♦ 20202× the bet
155106♠5♠4♦A♠5♣ 213♥7♦Q♣ 20 doubled00× the bet
15410A♦Q♣ 215♥A♠ 1600× the bet
153103♥A♣K♠4♠ 187♥Q♥ 1700× the bet
152104♥8♥7♠ 193♠8♥A♥ 12 doubled00× the bet
151109♦J♠ 19Q♠5♣5♦ 20202× 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.