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Degen Protocol
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Session against the house

Blackjack

ended Play money · 1ad1383ab1a12ced8271a9071893d34a

Watch the replayThe handsThe rulesCheck it is fair

gbbagainst the house
Hands played
200
Wagered
2,180 play
Returned
1,875 play
Bettor's net
-305 play
Return
86.01%

Results by hand

Final
Hands
200
played
Pace
20.8/min
overall 19.8/min
Biggest swing
-30
Seat 1 · hand 62

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

SeatNetRateStreak
gbb-305-152.5 play/100lost 1

Last hands

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

The hands

Newest first
#BetDealerHandsPaidChecked
20010J♠2♥ 126♠K♦ 16 surrendered50.5× the bet
19910K♦5♣3♥ 18Q♠J♦ 20202× the bet
198107♦2♣4♣J♦ 234♠J♥5♠ 19202× the bet
197107♦8♦K♠ 254♣J♦5♠ 19202× the bet
19610A♠10♣ 215♣J♠ 1500× the bet
19510J♦6♣3♥ 195♣2♥2♠2♥7♥ 1800× the bet
19410J♣3♠ 136♦9♣ 15 surrendered50.5× the bet
19310A♥5♣2♦ 18J♦8♦ 18101× the bet
192104♥5♠9♦ 183♥2♦5♣2♥ 1200× the bet
19110K♠4♠6♠ 20K♠Q♥ 20101× the bet
190108♣Q♥ 185♣9♣J♥ 24 bust00× the bet
189104♣4♦6♥6♥ 2010♠Q♦ 20101× the bet
188103♥2♣4♥10♣ 194♠9♥ 1300× the bet
187103♠J♥J♣ 239♦5♥ 14202× the bet
186107♠4♣ 115♦9♣10♠ 24 bust00× the bet
185106♠Q♥6♠ 227♥2♣7♣ 16 doubled404× the bet
18410K♦4♠ 1410♥6♠ 16 surrendered50.5× the bet
18310Q♣6♦J♠ 26J♥J♥ 20202× the bet
18210A♠7♥ 184♥A♣A♥5♥ 21202× the bet
18110Q♣Q♠ 2010♣7♥ 1700× the bet
180104♠3♥7♥6♠ 2010♥3♣ 1300× the bet
179102♣8♥5♦2♦ 177♦3♣9♠ 19 doubled404× the bet
178105♣7♠A♠10♣ 23J♥6♣ 16202× the bet
177108♦K♥ 183♣3♦J♦10♦ 26 bust00× the bet
17610Q♦K♦ 20Q♠9♠ 1900× the bet
175106♣9♦J♥ 25Q♠5♣ 15202× the bet
17410J♦3♥9♣ 22Q♦8♠ 18202× the bet
17310K♠6♠4♥ 206♠5♠A♣ 12 doubled00× the bet
17210K♥J♥ 20Q♣3♣10♣ 23 bust00× the bet
17110K♠10♣ 20K♥9♠ 1900× the bet
170105♦8♥A♦10♠ 248♥Q♠ 18202× the bet
16910K♠5♣ 153♣10♥K♥ 23 bust00× the bet
168108♠2♠7♦ 174♥5♠10♠ 19202× the bet
167105♠10♥6♣ 213♦2♦A♣9♦ 1500× the bet
166102♦3♠10♦6♦ 212♥4♣K♣ 1600× the bet
165108♥A♠ 195♦2♣9♦10♠ 26 bust00× the bet
164106♠7♣A♣8♣ 225♣9♥ 14202× the bet
163107♦9♠7♦ 235♥2♥10♠ 17202× the bet
162108♥4♣ 123♣10♦J♦ 23 bust00× the bet
16110J♥4♦ 143♦4♣4♥A♠2♥Q♠ 24 bust00× the bet
16010A♠2♥3♣10♥A♠ 178♦3♠Q♦ 21202× the bet
159105♦Q♦4♥ 197♠J♦ 1700× the bet
15810Q♥5♣ 156♥2♠6♠Q♦ 24 bust00× the bet
157102♣4♦2♦A♥ 19A♥5♣2♥ 1800× the bet
15610Q♥10♥ 204♥K♦6♥ 20101× the bet
155102♣9♥A♠Q♣ 22A♣9♠ 20202× the bet
154105♥3♣7♠Q♦ 254♥J♦ 14202× the bet
15310J♦7♣ 1710♠6♣ 16 surrendered50.5× the bet
152105♥Q♠4♦ 194♦9♣ 1300× the bet
151103♦2♣Q♥9♦ 24Q♥K♦ 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
acf16f0a4d125f95ee613b926ad9dba7f134715e2a2c2668ac4329ce6e622d72
Seed
dcfc9c8387d11270e8e7581ffaebe2f5a2df23481040bfc1ee598c6d321d45dc SHA-256 of "degen.match.seed.v1", a zero byte and the 32 seed bytes is the seed hash.
Bettor's seed
cafc3230778f929b24de6ce7c29de3ff
Commitment
Batch 64,917, Merkle root 2a08cee45ef43d5249d112aac8b37b372b26f9517faf0f7591f9013c01c23e5e. Recorded by Degen Protocol, not on a chain. See this batch and its Merkle tree
Merkle path
  1. 3443330053154880e929089a775b5a623506b80986573c0697c7eb5ae0f09819
  2. 688b96af019c6e04432bc793019afa862c7d16e1a4820918bd8f1b1195dfc4d6
  3. 883b7397b93f6cb28f66eb702752f1cb309144a10e04e764f4925dcf16425c42
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.