Transaction Details
SMART CONTRACT
Transaction Hash
97098c1fe7af56d25d069b691c568a6a434e84bd41e745d9cc365266312811e8
Block Status
Smart Contract State
SCID Reserves
| SCID | Amount (Atomic Units) |
|---|---|
| 0000000000000000000000000000000000000000000000000000000000000000 | 0 |
String Variables
| Key | Value |
|---|---|
| C | 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|
| collected | 2 |
| collector | 09733afe4b78345f3651a1bf2f5f1ce1e329e8c347d055af74c1e151ee118e0c00 |
| fee_bps | 10 |
| g_1_a | 09733afe4b78345f3651a1bf2f5f1ce1e329e8c347d055af74c1e151ee118e0c00 |
| g_1_amt | 1000 |
| g_1_b | 09733afe4b78345f3651a1bf2f5f1ce1e329e8c347d055af74c1e151ee118e0c00 |
| g_1_blkA | 7.58493e+06 |
| g_1_blkB | 7.584932e+06 |
| g_1_state | 3 |
| seq | 1 |
Transaction Information
Root Hash
Built Height
7584865
Block
Timestamp
1788787915746
Timestamp (UTC)
2026-09-07 13:31:55
Block Age
31m 33s ago
Fee
0.08787
TX Size
7.312 kB
Version
1
Confirmations
104
Signature Type
DERO_HOMOMORPHIC
DERO Asset
2
Ring Size
0.08787
Fees
0.00000
Deposited
Sender
dero1qyyhxwh7fdurghek2xsm7t6lrns7x20gcdraq4d0wnq7z50wzx8qcqq9vvptz
Ring Members (2)
Smart Contract Details
SC Balance
0.00000 DERO
Smart Contract Code
Smart Contract Arguments
| Name | Type | Value |
|---|---|---|
| SC_ACTION | uint64 | 1 |
| SC_CODE | string | "/* SapDuel.dvm — P0 provably-fair two-party coinflip ("duel") on DERO. Proves the full loop from CASINO_SPEC §5.2 / §6: bet → resolve → rake → payout with NO custody and NO trusted house. Fairness model (RANDOM is protocol-secure, per the derohe source): DVM RANDOM() is deterministic but keyed on Keccak(SCID, BLID, TXID). A caller fully controls their own TXID, but the BLOCK hash (BLID) that will mine a future Settle transaction is NOT known to the caller in advance. Therefore neither player can predict or influence the outcome of a Settle they submit — the result is fixed only at mining time. This is the same security assumption the derohe DVM itself documents for on-chain randomness ("attacker can not control BLID"). No commit- reveal needed; commit-reveal would only add a second-revealer griefing surface with no fairness benefit here. Rake (CASINO_SPEC §5.1): fee_bps baked at Initialize, routed to a hardcoded fee_collector at settle — same (10000 - fee_bps)/10000 math as the live SapAMM. No SetFee; only a new template changes it. Build B (per-player escrow): each bet escrowed in the SC; only the winner (minus rake) is paid out. Timelock refunds protect escrow if a party ghosts (SapHTLC Refund model). Pattern source: live SapWrap.dvm / SapAMM.dvm / SapHTLC.dvm. All keys/addresses stored RAW (33 bytes) exactly as SapHTLC does. */ Function Initialize(collector String) Uint64 5 version("1.0.0") 10 IF STRLEN(ADDRESS_RAW(collector)) == 33 THEN GOTO 40 20 RETURN 1 40 STORE("fee_bps", 10) /* 0.10% rake — tune later */ 50 STORE("collector", ADDRESS_RAW(collector)) 60 STORE("collected", 0) /* cumulative rake ledger (observable) */ 70 STORE("seq", 0) /* unique game id counter */ 80 RETURN 0 End Function /* Player A opens a duel: escrows exactly `amt`. */ Function OpenDuel(amt Uint64) Uint64 5 version("1.0.0") 10 dim n, v as Uint64 20 LET v = DEROVALUE() 30 IF v == amt THEN GOTO 60 /* must escrow exactly amt */ 40 RETURN 1 60 IF amt >= 1 THEN GOTO 90 /* non-zero bet */ 70 RETURN 1 90 LET n = LOAD("seq") + 1 100 STORE("seq", n) 110 STORE("g_" + n + "_a", SIGNER()) 120 STORE("g_" + n + "_amt", amt) 130 STORE("g_" + n + "_blkA", BLOCK_HEIGHT()) 140 STORE("g_" + n + "_state", 1) /* 1 = open, awaiting B */ 150 RETURN 0 End Function /* Player B joins: escrows the SAME amt. */ Function JoinDuel(n Uint64) Uint64 5 version("1.0.0") 10 dim v, amt as Uint64 20 LET amt = LOAD("g_" + n + "_amt") 30 IF amt > 0 THEN GOTO 60 40 RETURN 1 60 IF LOAD("g_" + n + "_state") == 1 THEN GOTO 90 70 RETURN 1 90 LET v = DEROVALUE() 100 IF v == amt THEN GOTO 130 110 RETURN 1 130 IF EXISTS("g_" + n + "_b") THEN GOTO 160 /* no double join */ 140 GOTO 170 160 RETURN 1 170 STORE("g_" + n + "_b", SIGNER()) 180 STORE("g_" + n + "_blkB", BLOCK_HEIGHT()) 190 STORE("g_" + n + "_state", 2) /* 2 = both escrowed, ready */ 200 RETURN 0 End Function /* Settle: draws the winner from protocol RANDOM, pays winner + routes rake to the collector. Callable by EITHER party once both have escrowed. Atomic payout: winner AND collector paid in the same execution, so a hand cannot resolve without the rake being collected. */ Function Settle(n Uint64) Uint64 5 version("1.0.0") 10 dim aAmt, rake, pot, w as Uint64 20 IF LOAD("g_" + n + "_state") == 2 THEN GOTO 50 30 RETURN 1 50 IF LOAD("g_" + n + "_a") == SIGNER() THEN GOTO 80 60 IF LOAD("g_" + n + "_b") == SIGNER() THEN GOTO 80 70 RETURN 1 80 LET aAmt = LOAD("g_" + n + "_amt") 90 LET pot = aAmt * 2 100 LET rake = pot * LOAD("fee_bps") / 10000 /* SapAMM fee math */ 110 IF rake < pot THEN GOTO 140 120 LET rake = pot / 2 /* hard cap (never 100%) */ 140 LET w = RANDOM(2) /* 0 = A wins, 1 = B wins */ 150 IF w == 1 THEN GOTO 240 170 STORE("collected", LOAD("collected") + rake) 180 SEND_DERO_TO_ADDRESS(LOAD("g_" + n + "_a"), pot - rake) 190 SEND_DERO_TO_ADDRESS(LOAD("collector"), rake) 200 STORE("g_" + n + "_state", 3) 210 RETURN 0 240 STORE("collected", LOAD("collected") + rake) 250 SEND_DERO_TO_ADDRESS(LOAD("g_" + n + "_b"), pot - rake) 260 SEND_DERO_TO_ADDRESS(LOAD("collector"), rake) 270 STORE("g_" + n + "_state", 3) 280 RETURN 0 End Function /* Refund path: if the duel never filled (B never joined) after A's window, A can reclaim. Mirrors SapHTLC.Refund. */ Function RefundA(n Uint64) Uint64 5 version("1.0.0") 10 dim amt as Uint64 20 IF LOAD("g_" + n + "_state") == 1 THEN GOTO 50 30 RETURN 1 50 IF LOAD("g_" + n + "_a") == SIGNER() THEN GOTO 80 60 RETURN 1 80 IF BLOCK_HEIGHT() > LOAD("g_" + n + "_blkA") + 200 THEN GOTO 110 90 RETURN 1 110 LET amt = LOAD("g_" + n + "_amt") 120 STORE("g_" + n + "_state", 4) 130 SEND_DERO_TO_ADDRESS(SIGNER(), amt) 140 RETURN 0 End Function /* Anti-griefing refund: both escrowed (state 2) but neither settles within the window. Either party reclaims their own bet. State flips to 4 so the other side cannot also pull. */ Function RefundStuck(n Uint64) Uint64 5 version("1.0.0") 10 dim amt as Uint64 20 IF LOAD("g_" + n + "_state") == 2 THEN GOTO 50 30 RETURN 1 50 IF BLOCK_HEIGHT() > LOAD("g_" + n + "_blkB") + 200 THEN GOTO 80 60 RETURN 1 80 IF LOAD("g_" + n + "_a") == SIGNER() THEN GOTO 110 90 IF LOAD("g_" + n + "_b") == SIGNER() THEN GOTO 110 100 RETURN 1 110 LET amt = LOAD("g_" + n + "_amt") 120 IF amt > 0 THEN GOTO 150 130 RETURN 1 150 STORE("g_" + n + "_state", 4) 160 SEND_DERO_TO_ADDRESS(SIGNER(), amt) 170 RETURN 0 End Function " |
| collector | string | "dero1qyyhxwh7fdurghek2xsm7t6lrns7x20gcdraq4d0wnq7z50wzx8qcqq9vvptz" |
| entrypoint | string | "Initialize" |
Prove Transaction
Prove that you sent DERO in this transaction. Obtain proof using the dero-wallet-cli command or from your wallet statement.
Note: The proof is sent to the server for verification calculations.
Payload proofs are user-provided display proofs; for the strongest verification, confirm with the receiving wallet.