Degen Protocol
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Session against the house

Blackjack

ended Play money · 3ab3d5abd70cf976793a9e5faf91ff12

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,360 play
Returned
2,540 play
Bettor's net
+180 play
Return
107.63%

Results by hand

Final
Hands
200
played
Pace
20.4/min
overall 20.9/min
Biggest swing
+50
Seat 1 · hand 130

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. 196Even0
  6. 195Even0
  7. 194Seat 1+10
  8. 193Seat 1+20
  9. 192Seat 1+10
  10. 191Seat 1+10
  11. 190Even0
  12. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
50104♣A♦3♦ 189♣6♣ 1500× the bet
4910A♥10♠ 21J♣J♠ 2000× the bet
48108♣4♥3♣2♦ 178♥Q♥ 18202× the bet
47107♣9♥K♣ 26K♥Q♥ 20202× the bet
46108♠9♥ 17K♠A♠ 21 blackjack252.5945× the bet
45103♦8♥8♥ 194♠7♦Q♦ 21 doubled404× the bet
44107♦6♣A♦4♠ 186♣10♦A♠ 1700× the bet
43107♠2♣J♣ 1910♠9♣ 19101× the bet
42109♣A♠ 20K♥K♣ 20101× the bet
41106♣2♦7♥K♦ 258♥4♥ 12202× the bet
40104♦A♣6♦ 213♠7♣4♦ 14 doubled00× the bet
39107♥5♣K♠ 22J♣4♣5♠ 19202× the bet
38107♥9♦K♣ 264♣6♥3♣ 13 doubled404× the bet
37109♣8♠ 177♣2♦A♣ 20202× the bet
361010♥7♠ 175♥J♥ 15 surrendered50.5× the bet
35105♠4♣2♥2♠3♦K♠ 26J♥3♣ 13202× the bet
3410A♥K♥ 216♣3♥ 900× the bet
331010♠8♦ 182♠5♥10♥ 1700× the bet
32102♠A♣2♥Q♣4♥ 198♠Q♣ 1800× the bet
31109♣K♣ 1910♦9♥ 19101× the bet
301010♣5♣9♥ 24A♣6♠2♣ 19202× the bet
29103♥7♠3♥9♥ 229♦7♠ 16202× the bet
28109♠K♣ 19J♦9♠ 19101× the bet
27105♦2♣3♦4♥4♥ 18J♦2♦ 1200× the bet
26107♠Q♥ 176♣2♥2♣10♣ 20202× the bet
2510K♦10♠ 208♦J♦ 1800× the bet
24105♥8♥2♦5♦ 207♥6♠ 1300× the bet
23108♥7♦5♣ 207♣6♥7♦ 20101× the bet
2210J♣8♠ 18K♥A♥ 21 blackjack252.5945× the bet
21106♦2♠5♥8♥ 214♥7♠10♦ 21 doubled202× the bet
2010K♣8♣ 18Q♠8♠ 18101× the bet
1910A♣8♣ 194♦6♣9♣ 19101× the bet
18109♦A♣ 203♥9♠6♦ 1800× the bet
17109♣J♦ 1910♥5♣10♣ 25 bust00× the bet
161010♣2♣ 122♥3♦A♣9♥J♣ 25 bust00× the bet
1510J♥K♣ 202♣J♣Q♠ 22 bust00× the bet
1410K♥K♣ 203♥9♠Q♠ 22 bust00× the bet
1310Q♣3♣2♦4♠ 196♥A♥4♥ 21202× the bet
12102♥7♠ 910♥A♦ 21 blackjack252.5945× the bet
11109♠A♥ 205♠5♣5♦ 15 doubled00× the bet
1010J♠A♣ 216♦J♥ 1600× the bet
9108♥4♥2♦10♠ 249♦10♣ 19202× the bet
810J♣8♣ 18A♣6♣9♦J♦ 26 bust00× the bet
7105♦8♦10♣ 237♣A♦4♦ 12 doubled404× the bet
6104♥2♦3♣A♣ 208♣2♥8♠ 18 doubled00× the bet
510K♦7♠ 179♠8♠ 17101× the bet
4109♦5♥8♠ 225♣2♥3♣2♣9♣ 21202× the bet
3106♣7♠10♦ 23K♦2♠ 12202× the bet
2106♥10♠2♣ 184♥7♥6♦ 17 doubled00× the bet
110J♠4♦6♠ 202♠2♠4♦7♠4♠ 1900× 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
bd1a77ed6aadb1657e510efa236610d3362ee54f36cc89cecf8e640b4710ead3
Seed
27a13133dc0a2db24f646546b727f36b64bfee3e40bfa7ac07c00444fb1aa01e SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
5939d5a4bdd8ce1bf4c329e96021f71e
Commitment
Batch 65,664, Merkle root 25cdf23e917fc3d836e37f706daa34cf2ecfc70e53049778815d9dd9b357487b. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 44a7e0707a996f6c6188ee3cf4e0ecf1834d234f70dc43b6ae7f0fc0b05f72da
  2. 268754d1b89f3e0bf3a5aacfe59a4cf7599c1088b671d3bb80418ad98db810ac
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.