$BTC "Publishing with the BTC currency pair" refers to creating content (such as a post or article) related to the price of Bitcoin against another currency. In the world of digital currencies and trading, "currency pair" means comparing the value of one currency to another.

When we say "BTC currency pair", we typically refer to:

* BTC/USD: The price of Bitcoin against the US dollar. This is the most common and referenced pair.

* BTC/EUR: The price of Bitcoin against the euro.

* BTC/USDT: The price of Bitcoin against Tether (which is a stablecoin linked to the US dollar).

* BTC/ETH: The price of Bitcoin against Ethereum (which is a popular pair among digital currencies).

In the context shown in the image, it seems that "publishing with the BTC currency pair" is a type of post that requires you to mention a currency pair (like BTC/USD) or use a hashtag related to the currency pair (like #BTCUSD) in your content. This adds a financial or analytical context to the post, especially if you are discussing Bitcoin price fluctuations or market analysis.

The conditions mentioned in the image for these posts are:

* The post must contain at least 100 words.

* It must include only one hashtag or currency pair (meaning you do not add multiple unrelated hashtags or currency pairs).

* You earn one point (+1 point) upon meeting the conditions.

In summary, it is about creating content that focuses on the value of Bitcoin compared to another currency, while adhering to specific conditions for the content.