Degen Protocol
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Session against the house

Blackjack

ended Play money · b2387afae3370cdbe89f0b294e8f4854

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,220 play
Returned
2,195 play
Bettor's net
-25 play
Return
98.87%

Results by hand

Final
Hands
200
played
Pace
17.4/min
overall 19.3/min
Biggest swing
-20
Seat 1 · hand 11

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

SeatNetRateStreak
gbb-25-12.5 play/100won 4

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
20010K♣4♠10♦ 247♣K♥ 17202× the bet
199106♥7♦Q♣ 236♣2♣6♥ 14202× the bet
198102♥8♠2♦2♣Q♥ 242♦4♣9♠ 15202× the bet
197105♥K♥J♥ 256♠5♠6♠ 17 doubled404× the bet
19610J♦7♠ 17K♠2♦10♠ 22 bust00× the bet
19510A♦9♥ 206♥J♣ 16 surrendered50.5× the bet
19410Q♣J♠ 209♣4♣8♥ 21202× the bet
193102♠K♣2♦5♦ 195♦A♦A♥3♥ 20202× the bet
19210J♣6♠A♠ 173♣Q♦2♣5♦ 20202× the bet
191103♦K♥2♥3♦ 18K♦9♦ 19202× the bet
190104♥7♥5♦7♠ 236♥8♣ 14202× the bet
189108♥4♥J♣ 225♥6♠3♠ 14 doubled404× the bet
18810K♣3♥3♦Q♣ 26Q♥8♦ 18202× the bet
18710Q♥K♦ 20A♣3♠J♥6♥ 20101× the bet
18610A♣4♣7♣7♣ 19K♥7♦ 1700× the bet
185102♣J♣8♣ 20Q♦9♠ 1900× the bet
184105♥9♠8♠ 229♠6♦ 15202× the bet
18310K♣K♦ 20K♣J♠ 20101× the bet
182109♣8♣ 179♥J♥ 19202× the bet
18110Q♦J♥ 20A♦4♥2♦A♦9♣ 1700× the bet
180108♠4♦ 125♠10♣K♥ 25 bust00× the bet
179107♣3♥9♠ 193♦A♣J♠5♥ 19101× the bet
178105♦9♥J♣ 245♠7♦ 12202× the bet
1771010♦10♣ 202♦5♦Q♣ 1700× the bet
176104♣A♥8♥A♥6♣ 20A♦8♦ 1900× the bet
17510A♣3♦8♣6♦ 183♥3♠7♠8♣ 21202× the bet
174107♠3♦ 1010♦5♦Q♥ 25 bust00× the bet
173102♣2♥5♠10♠ 19Q♣2♣8♥ 20202× the bet
172102♠3♥6♦8♣ 198♦9♠ 1700× the bet
17110A♠4♦A♣5♣ 212♥10♥4♥4♣ 2000× the bet
170108♣J♣ 1810♠2♦K♥ 22 bust00× the bet
169106♥9♦7♥ 225♦Q♥ 15202× the bet
16810A♦3♠3♦ 1710♦2♥6♣ 18202× the bet
167108♦6♣ 145♦8♣2♣8♣ 23 bust00× the bet
16610J♣A♥ 214♥7♣ 1100× the bet
16510K♥6♥ 166♠8♠J♣ 24 bust00× the bet
164107♣Q♦ 1710♦5♥A♣6♥ 22 bust00× the bet
163105♦K♥A♦2♣ 184♣Q♥ 1400× the bet
162103♣Q♣6♦ 199♠6♠ 1500× the bet
161109♥10♦ 194♠2♦5♥7♣ 1800× the bet
160102♥8♦K♣ 205♣K♠ 1500× the bet
159104♦3♠ 7Q♠A♥ 21 blackjack252.5945× the bet
158107♣4♦J♦ 213♦8♦4♣ 15 doubled00× the bet
157107♣K♣ 17A♦7♦ 18202× the bet
1561010♣J♥ 20J♦7♠ 1700× the bet
155107♥6♣ 132♥A♦3♣9♣J♦ 25 bust00× the bet
154104♥Q♦10♣ 2410♦Q♦ 20202× the bet
15310Q♠J♥ 20Q♣K♠ 20101× the bet
15210J♦J♣ 208♠Q♥ 1800× the bet
151108♠A♠ 19A♠4♥A♥J♠2♠ 1800× 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
63fc16cfc7850cebd7aa2f3a783971eaee6532de372ec3a2e5d00d81ea69e118
Seed
d02c8cb1cffcd10de34c64854a592e6a1fcc6c99c16872f2529a40905a1703c9 SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
893e4a9e158acdbac2e02334dc8cbaaa
Commitment
Batch 66,751, Merkle root fa87f5e00ed34e93801f05a14b00ad6dad0db2924d6a76d969c3466301a37315. Recorded by Degen Protocol; on-chain publication is not available yet. See this batch and its Merkle tree
Merkle path
  1. d45b879bb31da2f51595d977485bb7b249a877bf34128af609c9bc21e3400652
  2. 96e2d74a0fb16e5522d283f59599717b3bfe37bf0f9058bf0a09957c7f4dfb15
  3. df09958d39b4de781954115ce6ed81ab116f3ace41324177af33003c28b4aeac
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.