Degen Protocol
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Session against the house

Blackjack

ended Play money · 2c42f6f423616d339b9c7b8328d1a307

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,350 play
Returned
2,130 play
Bettor's net
-220 play
Return
90.64%

Results by hand

Final
Hands
200
played
Pace
20.2/min
overall 20.0/min
Biggest swing
-40
Seat 1 · hand 158

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

SeatNetRateStreak
gbb-220-110.0 play/100won 2

Last hands

  1. 200Seat 1+10
  2. 199Seat 1+10
  3. 198Even0
  4. 197Even0
  5. 196Seat 1+10
  6. 195Seat 1+10
  7. 194Seat 1+10
  8. 193Even0
  9. 192Even0
  10. 191Seat 1+10
  11. 190Seat 1+20
  12. 189Even0

The hands

Newest first
#BetDealerHandsPaidChecked
200104♠K♦K♥ 249♣7♠ 16202× the bet
199102♠9♦4♣7♥ 224♠K♦ 14202× the bet
198102♠2♠2♣7♦7♥ 20K♦2♠5♣ 1700× the bet
197109♣10♥ 19J♦9♣ 19101× the bet
196103♠J♦A♦2♥K♠ 269♠8♦ 17202× the bet
195106♥9♦K♥ 2510♠3♣ 13202× the bet
19410Q♣8♦ 18A♠K♠ 21A♦7♠ 18303× the bet
193105♠10♦3♠ 18A♣2♠10♣ 1300× the bet
19210A♦7♠ 1810♠2♣5♥ 1700× the bet
19110Q♦6♠6♣ 22J♣Q♠ 20202× the bet
190109♥A♠ 205♠6♠J♣ 21 doubled404× the bet
189106♥6♣9♣ 21K♦5♥ 1500× the bet
188102♠J♦K♥ 225♥8♠ 13202× the bet
1871010♠9♦ 194♣2♠7♠4♠ 1700× the bet
186107♦6♥2♦10♠ 258♥4♥5♣ 17202× the bet
185102♠6♣K♠ 182♥J♠2♥ 1400× the bet
184102♠2♦A♠6♥ 216♣5♦2♠ 13 doubled00× the bet
18310A♥3♥ 14A♦K♠ 21 blackjack252.5945× the bet
18210Q♦4♠10♣ 24Q♦9♥ 19202× the bet
1811010♣Q♥ 20Q♥K♣ 20101× the bet
180109♣A♣ 202♥6♥K♥ 1800× the bet
179104♥2♦4♣5♦7♦ 224♦9♥ 13202× the bet
17810K♥8♥ 184♣K♥10♣ 24 bust00× the bet
17710Q♠4♣ 145♦9♥9♥ 23 bust00× the bet
17610K♠8♦ 18J♠J♥ 20202× the bet
175105♦5♠2♠8♣ 206♠Q♠ 1600× the bet
17410A♦10♥ 21A♠J♠ 21 blackjack101× the bet
17310A♣6♦ 174♠3♦4♦7♠ 18202× the bet
172102♦5♦5♦3♣4♥ 19Q♥9♣ 19101× the bet
17110K♥J♥ 206♠J♦ 16 surrendered50.5× the bet
17010K♠4♣ 144♥3♥7♥Q♣ 24 bust00× the bet
16910A♥K♦ 21J♥6♦ 1600× the bet
168104♣6♥6♦Q♥ 2610♦5♥ 15202× the bet
167105♥A♥A♠ 17K♦3♣ 1300× the bet
166105♦K♠A♥10♠ 262♦J♠ 12202× the bet
165104♦2♣3♣3♦Q♠ 22A♥6♣A♣ 18 doubled404× the bet
164109♣9♦ 18J♣K♦ 20202× the bet
16310J♣8♦ 184♣5♠4♣8♥ 21202× the bet
162109♦A♥ 202♥5♦3♦5♥Q♦ 25 bust00× the bet
1611010♦8♣ 18A♣8♠ 19202× the bet
16010K♠8♣ 184♦9♥7♠ 20202× the bet
159107♥5♣Q♠ 222♥K♣5♦ 17202× the bet
158103♣A♣7♦ 213♦7♠7♥ 17 doubled3♥6♦8♥ 17 doubled00× the bet
15710K♦2♥ 124♣4♦7♠9♣ 24 bust00× the bet
156108♣5♣ 133♥5♥8♥6♠ 22 bust00× the bet
155104♦2♠10♣A♠ 17A♥5♣A♣ 17 doubled202× the bet
154105♣Q♦4♦ 19K♥10♣ 20202× the bet
153107♦3♦5♦K♣ 25Q♦9♥ 19202× the bet
1521010♣J♣ 208♦J♣ 1800× the bet
1511010♥3♥K♦ 2310♦J♦ 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
7b50ccdca380717799416606fff6ecc09823e8060915a9087156dda85f5b3352
Seed
a96ccf02eaff86679d2c20ebbc4283c24b9a68ab972305094a9645c832e3e5f6 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
d245dc77bffd2c5efc25ca4035a8d314
Commitment
Batch 66,907, Merkle root 262db394c1ff683fb4daf6821a45fba9221a9eb8c221dbe2788ef8b8c3f4f27c. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. 65f1f6dd1f011cfe05c3094ea63cff6dc78c5291e98a0c6b126b5b684d8cbefe
  2. 88364a8297fcd982d1edbd37636b1e3a342dde393ea0e7cdd2f2bc780a769f1d
  3. 09f5771cfb8b6f0efed5fe91acae5239c3d8c92a5e86e7c49851a0479ee18f7f
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.