I HAVE 2 WORDS FOR YOU - Please help me clarify...........................

[bitktn]

Japanese should be (Smartcoin/Bitcoin) "での支払いを受け付けています".
It means "We accept payment by Smartcoin/Bitcoin".

Actually, it's not unnatural to leave it in English IMO as all "bitcoin accepted here" signs in japan remain in english.
(Translating into japanese is also natural ofc)

[Akado]

Portuguese:
Instead of "ACEITO AQUI" should be "ACEITE AQUI"

[tonyk]

#6 Bulgarian is wrong

Приемаме smartcoins.

Паботим c  bitcoin.

even leaving the bitcoin part in English is OK I guess.

So chose one of the flowing 3:
Приемаме smartcoins.
Приемаме bitcoin
-----------------------------
Приемаме smartcoins.
Паботим c bitcoin
-----------------------------
Приемаме smartcoins.
We accept bitcoin.

ACCEPTED HERE in Bulgarian is wrong? Just let me know what would sound the most local/native, thanx @tonyk

haha no, допусне is wrong.
I will pick option one personally.[bold now]. As in many other languages (see above) the passive voice sounds very unnatural, so I  have done it in active voice.

[kenCode]

#6 Bulgarian is wrong

Приемаме smartcoins.

Паботим c  bitcoin.

even leaving the bitcoin part in English is OK I guess.

So chose one of the flowing 3:
Приемаме smartcoins.
Приемаме bitcoin
-----------------------------
Приемаме smartcoins.
Паботим c bitcoin
-----------------------------
Приемаме smartcoins.
We accept bitcoin.

ACCEPTED HERE in Bulgarian is wrong? Just let me know what would sound the most local/native, thanx @tonyk

[tonyk]

#6 Bulgarian is wrong

Приемаме smartcoins.

Паботим c  bitcoin.

even leaving the bitcoin part in English is OK I guess.

So chose one of the flowing 3:
Приемаме smartcoins.
Приемаме bitcoin
-----------------------------
Приемаме smartcoins.
Паботим c bitcoin
-----------------------------
Приемаме smartcoins.
We accept bitcoin.

[kenCode]

Russian should be "принимаются здесь"

More natural in this context: "Принимаем здесь".

Thanx pal, @krondix would you agree?
Thanx guys

[pal]

Russian should be "принимаются здесь"

More natural in this context: "Принимаем здесь".

[kenCode]

Slovak is technically correct but unnatural

Well, I want these to look as natural as possible, like they were designed by a local. Please let me know what would look the most acceptable to the natives, thank you @paliboy

[mindphlux]

The current german translations says 'WE ACCEPT' but you probably would want to say 'HIER AKZEPTIERT'

so either it's WIR AKZEPTIEREN SMARTCOINS (text first) or SMARTCOINS HIER AKZEPTIERT (text last)

[paliboy]

Slovak is technically correct but unnatural

[Musewhale]

great 

[mirrax]

In Czech "ZDE PŘIJÍMÁME" is correct.
Yours translation is Google probably?
If you need to review or translate from English to Czech I will do it for you.
(for free)

I can confirm that it is ok.

[inarizushi]

French is correct.

However, "accepté" is singular, and "smartcoins" is plural, so "Smartcoins ACCEPTÉS ICI" would be more correct.

[chryspano]

Greek is a bit strange as a language. I think you should leave it in English otherwise it reads funny..

If you insist translating it I would say:
"ΓΙΝΟΝΤΑΙ ΔΕΚΤΑ" or "ΔΕΚΤΑ ΕΔΩ"

@liondani and @chryspano what do you guys think?

@fuzzy no need to send me anything. you are already doing to much

I agree, curent tranlation would be apropriate if Smartcoins and Bitcoin were credit/debit cards
either leave it in eglish(EDIT: Half the Greeks can speak some English https://en.wikipedia.org/wiki/List_of_countries_by_English-speaking_population) or change to "ΔΕΚΤΑ ΕΔΩ"

[kenCode]

Chinese is correct.
But “这里接受” and “這裡接受”  are better.

Chinese, Simplified/Mandarin; zh, zh-CN, cmn-Hans-CN (中文) - 这里接受
Chinese, Traditional/Cantonese; zh-TW, cmn-Hant-TW (繁體中文) - 這裡接受

Thanx @taoljj - please check it again now, did i fix it correctly??