Bitcoin developers have released the latest upgrade to Bitcoin Core, the underlying software that runs the blockchain of the largest cryptocurrency by market capitalization.

The ‘v26.0’ upgrade will introduce a new Bitcoin P2P transport protocol called v2, which will address many of the drawbacks that prevail in the current version, particularly in the context of attackers.

Some of these issues include unauthenticated connections, potential incursions to privacy based on the way data is relayed, and eclipse attacks that misdirect miners to accept invalid or confirmed transactions that could lead to a double-spend attack. 

The v2 protocol would set up an encrypted connection between two nodes, impeding eavesdropping by forcing an attacker to become active, and in a sense be discovered by network participants. 

“Our goal includes making opportunistic encryption ubiquitously available, as that provides the best defense against large-scale attacks,” wrote the developers. 

Some of the other features include faster node bootstrapping with a UTXO snapshot, which would bring nodes online instantly, as opposed to a full sync which could take hours.

Some Bitcoin developers have indicated that the next version of Bitcoin Core, v27, might mark the end of the Bitcoin Ordinals’ inscriptions. 

The surge in popularity of these inscriptions has led to high levels of congestion on the network of late, and Bitcoin Core developer Luke Dashjr claims that these inscriptions are spamming the blockchain by exploiting a vulnerability in the software.

The bug fix was recently fixed in an upgrade to Bitcoin Knots, which is a derivative of Bitcoin Core with a collection of improvements backported from and sometimes maintained outside of the master git tree. Some of its features, however, have not been tested to the same extent as they have in Bitcoin Core.

Ocean, a decentralized mining Bitcoin protocol, said it had implemented the Bitcoin Knots upgrade which would address the “long-standing vulnerability exploited by modern spammers.”

However, some Bitcoin proponents viewed the move as “pro-censorship” and criticized Ocean for filtering these transactions.

On the other hand, Dashjr, who is also the chief technology officer at Ocean, still claims that Ordinals have been “an attack on Bitcoin from the start” and the damage it’s doing to Bitcoin is “huge and irreversible.”