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Show link pls

https://github.com/t3ran13/php-graphene-node-client/blob/664adc9c190bc455be6bbff16f66ebaf20bb6294/Debug/Test.php#L59

$answer = OpVote::doSynchronous(
    Transaction::CHAIN_STEEM,
    'guest123',
    '5JRaypasxMx1L97ZUX7YuC5Psb5EAbF821kkAGtBj7xCJFQcbLg',
    'firepower',
    'steemit-veni-vidi-vici-steemfest-2016-together-we-made-it-happen-thank-you-steemians',
    10000
);

I got it from steemjs examples)
But anyway thank you!

haha, that's funny! So there's a free 20SP account donated by steemjs to be used by everybody - enjoy :)

edit: seems like this is known/intended:

[...] it doesn't matter as it's just posting private WIF of disposable accounts, having them hardcoded make easier for dev to test [...]

https://github.com/steemit/steem-js/pull/207

You cant without active posting key)

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