CLOSEOPTION.COM BINARY OPTIONS
This company is based in the republic of Georgia, and is
fairly transparent. There is a very mild degree of KYC
with no documents upload that I can see. U.S. ip addresses
are not geo blocked, and U.S. is permitted in opening an
Better choice of granularity of contract expiration times, but
I have not yet traded to verify.
One quirk is that they accept BTC deposit, but not withdrawal,
as that can be done with PayPal. A little strange. They are
very clear about this in terms and conditions. Here are
their FAQ page, about, and terms and conditions links:
 for incoming BitCoin they use the service CoinPayments.net
and it’s important to send the precise amount of BTC to the
last decimal point. It works well.
 They offer a trouble/question ticketing system, which I assume
will be helpful. Could this be a “full service” binary option broker? LOL
…let’s not jump to conclusions at this stage !!
Oddly, they offer (at the moment) BCH/USD and I did not see
BTC/USD, plus a number of Forex pairs. (screenshot)
You can see payout percentages on Wins.  I do not know yet
whether these payout percentages change with trading conditions…
Here we go, and I’ll report back as things evolve.
 their Chat Support is very good. “Allison” actually took some time to think
about my question whether there was a Trading API available. There isn’t.
But at least what seems like a real person is readily available !!
[results] The Strike Price precision and latency are good. Contract intervals,
30s, 1m, 2m, 5m, etc are accurately timed. Wagers are in increments of $1
so if payout is 67% then firstly, they take your $1 wager, but then if you WIN
then return you $1.67 . One one occasion, it appeared the strike Price exactly
matched the entry strike Price. In that case, they returned $0.67 and I
guess kept the $1… that won’t happen very often. So far, so good, using
AUD/USD. I’d say that volatility in Strike Price is good, if you can enter on
counter-trend “snaps” with a low latency… Satisfies that “gambling itch"
but, seriously, if you have detailed micro scalping analytics, then it becomes
"more of a science”…
[correction] wagers are in increments of $0.10 and you can enter any
amount you wish… Of course, sophisticated “defensive” approaches can
be used where, say, multiple CALLs are made, with increasing wager
amounts, so that as price moves against you, you can effectively do
what would ordinarily be equivalent to “lowering your cost basis” through
multiple price-staggered CALLs… but I digress – TMI
Contract durations, and screenshot