Bad actors and ‘block storms’ — Bitcoin dev calls for testnet reboot

As a researcher with experience in the blockchain industry, I share Jameson Lopp’s concerns about the current state of Bitcoin’s popular testnet, TBTC. His essay “Griefing Bitcoin’s Testnet” sheds light on the dire need for a reboot due to the ongoing issue of “block storms” and the exploitation of the testnet by certain projects.


Jameson Lopp, co-founder of Bitcoin custody firm Casa, points out that Bitcoin’s most commonly used testing network is in a critical state. This situation arises due to “block surges” and the capability for projects to charge users for testnet Bitcoin (TBTC).

As a crypto investor, I’ve come across an intriguing argument made by Lopp in his May 4 essay titled “Griefing Bitcoin’s Testnet.” In this piece, he emphasizes the need for a partial reset of the Bitcoin testnet, TBTC, due to persistent “block storms” that arise from its distinctive consensus mechanism. Essentially, these blockstorms cause disruptions and hinder the effective functioning of the testnet, making it necessary to address this issue.

The Bitcoin main network typically generates around 144 blocks each day. In contrast, the testing network, which follows slightly varied consensus guidelines, can occasionally create over 10,000 blocks within a 24-hour period.

Bad actors and ‘block storms’ — Bitcoin dev calls for testnet reboot

Lopp shared that due to these “mining backlogs,” the Bitcoin network has reached a present block height of approximately 2,811,000. This corresponds to where the Bitcoin mainnet would stand around the year 2061.

Lopp observed that as a result of the significant growth in the height of the testnet’s blocks, the remuneration for testnet miners had plummeted to almost nothing. Consequently, the network became largely unproductive for developers aiming to create new tokens.

As a crypto investor, I’ve come across Lopp’s perspective that the limited supply of testnet Bitcoin is being seized upon by some projects for their own gain. In simpler terms, he believes that these projects are exploiting the scarcity of testnet Bitcoin to further their agendas.

“He pointed out that it’s quite common for deceitful individuals to take advantage of others’ innocence and sell them testnet Bitcoins at the prices of mainnet Bitcoins in exchanges.”

He cited SatoshiVM, a Bitcoin layer-2 network labeled as such, as an illustration. This project, which uses TBTC for dispersing airdrops to its possessors within the testnet environment, has reportedly been generating artificial value for its own advantage.

He announced multiple initiatives, such as the decentralized exchange (DEX) named MotoSwap and the brokerage company referred to as Buy Tesnet, designed for facilitating testnet token transactions for users.

“The sole reason I’m advocating for a testnet reset is because testnet is supposed to be free for developers to use. Other than that, everyone should be free to use testnet for whatever development purpose they wish.”

As an analyst, I would strongly recommend adding a clear and prominent warning on the main interface of any digital wallet that is capable of supporting test networks. This message should unequivocally state that testnet coins lack any real-world value.

In the end, Lopp recommended instilling a habit of frequent resets as the key approach to preventing testnets from gaining value. He encouraged Bitcoin developers and users to transition to “testnet4” in the near future.

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2024-05-06 05:15