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Degen Protocol USDCBase Sepolia · testnet
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Session against the house

Blackjack

Play moneyended

15ff09e11a3693431ab74f2d72a612c4

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,260 play
Returned
2,450 play
Bettor's net
+190 play
Return
108.41%

Results by hand

Final
Hands
200
played
Pace
20.0/min
overall 20.8/min
Biggest swing
+30
Seat 1 · hand 116

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

SeatNetRateStreak
gbb+190+95.0 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50107♣5♠5♠ 179♠8♦ 17101× the bet
49102♦10♣8♥ 202♣5♠Q♦ 1700× the bet
48106♠A♣ 172♦K♦ 1200× the bet
4710A♠6♣ 17A♦Q♣ 21 blackjack252.5945× the bet
46108♠K♦ 189♥6♥A♥K♣ 26 bust00× the bet
45107♥3♣ 10Q♠5♦9♥ 24 bust00× the bet
4410A♦5♠10♦8♠ 24Q♥9♥ 19202× the bet
43108♠5♣ 136♠8♥2♣Q♥ 26 bust00× the bet
42107♠4♠2♣A♥K♦ 244♥7♥5♠ 16 doubled404× the bet
411010♥J♣ 204♣Q♥4♦ 1800× the bet
40102♠6♥9♦ 176♠3♠2♥Q♥ 21202× the bet
39103♥8♠J♣ 213♣10♥ 1300× the bet
38108♦9♠ 17A♣8♠ 19A♠3♠ 14202× the bet
37106♦K♦9♦ 2510♦3♠ 13202× the bet
36107♦4♦6♣ 177♥4♥7♠ 18 doubled404× the bet
35103♠9♦5♣ 17J♣3♥ 1300× the bet
34104♠5♥9♥ 187♠K♦ 1700× the bet
3310J♣J♠ 203♥4♣2♠Q♠ 1900× the bet
32102♦2♥2♠6♠3♠8♦ 238♣2♦2♠ 12 doubled404× the bet
31108♥5♥5♣ 189♥6♦6♦ 21202× the bet
30104♣5♣5♥10♠ 249♠2♠2♠ 13 doubled404× the bet
2910Q♣9♣ 197♣10♦ 1700× the bet
28102♠2♦J♣4♣ 184♠2♣10♥ 1600× the bet
27108♠4♥6♠ 189♠10♦ 19202× the bet
2610A♦2♦A♦K♦7♦ 21J♣7♥ 1700× the bet
25109♥Q♥ 195♠2♦K♠ 1700× the bet
24102♠10♥5♣ 172♣7♣J♠ 19202× the bet
23109♣3♣J♠ 225♦3♣4♣5♠ 17202× the bet
2210Q♥J♥ 20A♥7♣3♣ 21202× the bet
21108♣K♦ 188♥9♦ 1700× the bet
20108♣3♠ 117♦6♦A♥J♦ 24 bust00× the bet
1910A♦9♥ 20J♣10♣ 20101× the bet
18109♦6♣ 15K♣4♣8♠ 22 bust00× the bet
17108♠7♠5♠ 203♠4♥10♦ 1700× the bet
16103♣2♥6♠4♣10♠ 25K♥10♦ 20202× the bet
15109♣Q♠ 193♣10♥J♦ 23 bust00× the bet
14102♠7♠4♣4♣ 17Q♥J♥ 20202× the bet
13107♣J♠ 179♠4♠2♣K♥ 25 bust00× the bet
12107♣K♥ 1710♥9♣ 19202× the bet
11103♣5♥5♥K♥ 232♥J♠7♣ 19202× the bet
1010A♥A♦3♠Q♣2♦ 177♣Q♠ 17101× the bet
9105♠8♥7♥ 205♦5♥J♠ 20 doubled202× the bet
810K♥Q♦ 206♠K♦ 16 surrendered50.5× the bet
7106♦3♦7♥A♣ 178♠K♦ 18202× the bet
6107♦A♦ 18Q♣9♣ 19202× the bet
510K♦2♦8♦ 20K♥10♥ 20101× the bet
4102♥A♦5♥ 18J♠5♥ 1500× the bet
3107♣A♠ 182♦Q♣2♣9♦ 23 bust00× the bet
2109♥A♠ 2010♣A♦ 21 blackjack252.5945× the bet
110J♥2♦K♦ 228♦3♦J♥ 21 doubled404× 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
781db6d18ac89c021d8e99743131541a5784975bade9f8bb20bcd8c3b24e1dba
Seed
832a5c219acad228a26bdf08fae1c7a0d3c6ed8161e9a24edf3e0dd54e7e43c4 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
e9c3f7746cf44c46785938c11c1601d5
Commitment
Batch 62,060, Merkle root c0f21f5db09609598de15c55181d925022c7b33d60bed9f3588447d658ada698. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. e362fe431858c659fa41941833243bf48b50cea22a6175d6c1bf210aa46eca05
  2. c398df2d79b6be6be14335c8e1297ede725c3e4e7a805fc9eac7d898baac4cb4
  3. 3f1517587f0e8b30d217b25c524a0109c1b2a4c6944cb1f59850fe5c9c3d792d
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.