casper.se

def deposit(validation_code:str, randao, address):
    validation_code_hash = sha3(validation_code:str)
    i = 0
    success = 0
    while i < len(validatorSizes) and not success:
        if msg.value <= validatorSizes[i] * 10**18:
            success = 1
        else:
            i += 1
    if self.validatorSlotQueueLength[i]:
        j = self.validatorSlotQueue[i][self.validatorSlotQueueLength[i] - 1]
        self.validatorSlotQueueLength[i] -= 1
    else:
        j = self.validatorCounts[i]
        self.validatorCounts[i] += 1
    self.validators[i][j].vchash = sha3(validation_code:str)
    ~sstorebytes(ref(self.validators[i][j].validation_code), validation_code, len(validation_code))
    self.validators[i][j].deposit = msg.value
    self.validators[i][j].start_epoch = self.currentEpoch + 2
    self.validators[i][j].end_epoch = NO_END_EPOCH
    self.validators[i][j].address = address
    self.validators[i][j].randao = randao
    self.validators[i][j].lock_duration = self.getCurrentLockDuration()
    ~sstorebytes(ref(self.vchashToIndices[validation_code_hash]), [i, j], 64)
    log(type=NewValidator)
    return(1:bool)

ok, so this is the code on the DevCON2 black t-shirts :-)