YouTuber Logan Paul has threatened to sue fellow YouTuber and internet detective Coffeezilla for defamation after he accused Paul’s CryptoZoo nonfungible token (NFT) project of being a “scam.”

The two have been battling back and forth on both social media and YouTube videos ever since Dec. 17, when Stephen Findeisen — also known as Coffeezilla — launched the first of a three-part video series attacking CryptoZoo and Paul, who was the face of the project.

“CryptoZoo was supposed to be a fun blockchain game that can earn you money [...] but millions of dollars of investor money later, things are still broken,” he said.

In his most recent response, Logan Paul published a YouTube video on Jan. 4 accusing the internet detective of having “led the charge to drive and monetize a narrative telling millions of people that I’m a fraud or I tried to scam my audience.”

He has also accused Coffeezilla of having done so without verifying any background information or substantiating any evidence, adding that he “took multiple criminals’ words as truth and broke laws, you still published the defamation,” adding:

CryptoZoo is an NFT game with the premise of allowing “ZooKeepers” to buy NFT eggs using the game’s native token, ZOO. These eggs would then be hatched into animals that can be bred to create hybrid animals.

The hybrids were intended to be tradeable and provide ZooKeepers with ZOO, with Paul describing the project in an Aug. 21, 2021, podcast as a “really fun game that makes you money.”

Additionally, Paul had suggested the art for the game would be “handmade” by 10 different artists over six months.

The hybrids were the focus of a Sept. 11, 2021, video from Coffeezilla in which he described the images as “a bunch of stock photos from Adobe that have been poorly photoshopped.”

However, the CryptoZoo blog has not published any new content since April 20, prompting some to believe that the development of the project has halted.

During Coffeezilla’s three-part series about CryptoZoo, the YouTuber interviewed purported investors of the project. One investor who claimed to still be holding eggs called on the CryptoZoo team to “reimburse those loyal fans they have or try to rebuild the project.”

However, in his latest video, Paul said that they will “continue to build CryptoZoo,” sharing a teaser stating that it was coming in 2023/2024.

Coffeezilla has continued to question the authenticity of these claims on Twitter.

Meanwhile, both Paul and Coffeezilla have called on each other to discuss the matter on their respective platforms, but both have yet to accept any of the invitations.

According to CoinMarketCap, the Zoo token has plummeted by 99.5% over the past year, despite some gains within the last week following recent media attention.

Paul had been an avid supporter of crypto and NFTs throughout 2021 and was a major promoter of the crypto token Dink Doink (DINK) prior to launching CryptoZoo. Dink Doink was also lambasted by Coffeezilla in a July 12, 2021 video.