There have been numerous attempts to explain the emergence of this expression, which seems to have swept into popular use in the US during the mid-19th century. Most of them are pure speculation. It does not seem at all likely, from the linguistic and historical evidence, that it comes from the Scots expression och aye, the Greek ola kala ('it is good'), the Choctaw Indian oke or okeh ('it is so'), the French aux Cayes ('from Cayes', a port in Haiti with a reputation for good rum) or au quai ('to the quay', as supposedly used by French-speaking dockers), or the initials of a railway freight agent called Obediah Kelly who is said to have written them on documents he had checked.

A more likely explanation is that the term originated as an abbreviation of orl korrekt , a jokey misspelling of 'all correct' which was current in the US in the 1830s. The oldest written references result from its use as a slogan by the Democratic party during the American Presidential election of 1840. The ...more

Source: Oxford dictionary

All correct

A IS PRONOUNCED AS 'O' LIKE in Hall, All
K represents C

There is s story behind. On a ship, in england, bails were to be inspected by a labour and was asked to mark them if everything was right or not. He was not educated.
The bails which were ''all correct'' were marked as OK ,
and since then All correct is known OK

Oye kaminey...

O.K. is the original term, which stands for "oll korrect", a sarcastic spelling of "all correct". Comes all the way to use from the 1800s.

All correct

Oll Korrect in Italic language.

All Correct

One kiss :-))

Oll korrect