Degen Protocol
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Session against the house

Blackjack

ended Play money · ae9dce2bb8208b3ce3502ecfd0d85de1

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,250 play
Returned
2,070 play
Bettor's net
-180 play
Return
92.00%

Results by hand

Final
Hands
200
played
Pace
21.0/min
overall 21.2/min
Biggest swing
+30
Seat 1 · hand 39

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

SeatNetRateStreak
gbb-180-90.0 play/100won 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
50107♠2♦6♠K♣ 25J♣K♠ 20202× the bet
4910K♦2♥J♣ 229♣9♦ 18202× the bet
48105♥J♥3♥ 183♦4♦K♦ 1700× the bet
4710J♣2♠10♥ 227♣2♥6♣2♥ 17202× the bet
46106♥7♦Q♠ 233♣8♠4♥ 15 doubled404× the bet
45102♠4♥10♦4♥ 20K♥6♦ 1600× the bet
44107♦6♥ 132♠10♥10♦ 22 bust00× the bet
4310J♦K♣ 207♦6♣9♣ 22 bust00× the bet
42108♣5♠ 135♥Q♦K♠ 25 bust00× the bet
4110K♠6♣9♣ 256♦5♠7♣ 18 doubled404× the bet
40104♦K♥Q♠ 24K♦3♥ 13202× the bet
39106♦7♥9♣ 226♦5♥2♠ 13 doubled6♦2♦A♥ 19606× the bet
38105♣8♦A♥9♣ 23Q♠9♠ 19202× the bet
3710J♠K♦ 20J♦9♠ 1900× the bet
3610Q♥4♠3♦ 178♦K♣ 18202× the bet
35109♥J♠ 195♥7♦K♠ 22 bust00× the bet
34104♣Q♦J♠ 243♦J♦ 133♥A♣8♦ 12404× the bet
33108♦5♥Q♦ 237♦A♥ 18202× the bet
321010♥3♣6♣ 194♥9♣4♣ 1700× the bet
31109♠7♦ 162♣7♣3♣10♠ 22 bust00× the bet
3010J♠7♣ 173♣5♦4♥7♦ 19202× the bet
29103♠10♠5♥ 18A♥4♥6♠ 21202× the bet
281010♥J♥ 207♣8♠ 15 surrendered50.5× the bet
2710Q♣10♣ 208♠Q♦ 1800× the bet
26106♣K♠9♠ 254♠8♦ 12202× the bet
25102♠7♣K♠ 196♠10♦ 166♣Q♦ 1600× the bet
24109♦A♥ 205♦7♣10♥ 22 bust00× the bet
2310K♥A♠ 21K♥5♦ 1500× the bet
22102♦2♥9♣3♦6♣ 226♥Q♠ 166♣Q♠ 16404× the bet
2110K♣4♥J♠ 248♦K♦ 18202× the bet
2010J♥9♠ 196♦4♦6♥10♥ 26 bust00× the bet
1910J♥10♣ 205♠K♦ 15 surrendered50.5× the bet
18108♠10♣ 183♥4♠K♠ 1700× the bet
17109♥7♦K♦ 268♥2♣7♣ 17 doubled404× the bet
1610J♣4♥6♣ 204♦4♣K♠ 1800× the bet
15103♥5♠K♠ 187♥10♥ 1700× the bet
1410A♦6♠ 17J♥9♥ 19202× the bet
13102♦2♠3♣6♦3♦5♠ 214♣K♥ 1400× the bet
12103♣2♦6♣Q♦ 214♣7♦6♠ 17 doubled00× the bet
11106♣2♠K♥ 189♣6♣ 1500× the bet
10104♣4♥A♥ 19J♦2♠ 1200× the bet
910A♠6♥ 17J♣7♦ 17101× the bet
8106♥K♦7♦ 237♣5♥ 12202× the bet
710A♦7♠ 184♥3♦8♣3♠ 18101× the bet
61010♠10♣ 20Q♣2♥6♣ 1800× the bet
5107♦8♠10♦ 254♥8♣6♦ 18202× the bet
4107♠7♦K♦ 245♣2♦K♥ 17202× the bet
3103♣5♥J♠ 18J♠9♠ 19202× the bet
2102♦8♠10♥ 203♣A♠3♥3♠ 20101× the bet
1102♣3♠4♦2♦J♠ 21K♦10♣ 2000× 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
1388a2e4b85457a4fc7888a8b046c001c7fd042483664104a4cd414f38be25b4
Seed
2ab3837406f8cdd382ad9c00e1f08926ab8c258d832fb0589f0826eb0fe4d745 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
4fe655a650280b27a28b8cd722d82cca
Commitment
Batch 70,459, Merkle root 9ecfe3b627da81dd56f4832e19ab25d71318e1776af2b81e04fb97c604e77484. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 008db2b68326b27e4b291e19e9c33790a31d868bede8074c4b335ef6c056f731
  2. c603e4e44361e76e8389344e4653403ce1ec729bb093902696e0405c90f54d9e
  3. 3f49034499b35dfc0db78bc1e80bd32af2f3ee4381b127ea5417a05be19d1dc8
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.