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New 10 block checkpoints proposed to secure monero

Monero Proposes 10-Block Checkpoints to Counter Qubic Attacks | Users Weigh In

By

Vitalik Buterin

Aug 16, 2025, 07:37 AM

2 minutes reading time

Illustration of a digital lock symbolizing security with Monero logo and 10-block structure around it
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Growing Concern Over Chain Reorganization Attacks

The push for rolling 10-block checkpoints has emerged as a potential solution against Qubicโ€™s six-block reorganization attack on Monero. Proposed by a group of users, this mechanism aims to finalize blocks after 10 confirmations, making them irreversible.

Checkpoints in Action

Checkpoints are not new; they've been effective in Bitcoin Cash since 2018, where they successfully prevented chain reorgs. This mechanism would secure Monero's blockchain against attackers, particularly those leveraging proof-of-work.

โ€œIdeally, if they could be done in a decentralized way, it would make sense,โ€ stated a prominent voice in user discussions on the topic. Concerns here focus on potential complexities and the risk of creating a consensus chain split.

User Sentiments and Controversies

A split in sentiment is evident among users regarding the proposal. Critical voices raised flags with comments like:

"These are really stupid options"

While some advocate for checkpoints as a smart defense, others argue that adding complexity could be detrimental to Moneroโ€™s core ideals. One user remarked, "We need more p2pool miners to decentralize the network."

Moreover, a few pointed out that itโ€™s crucial to reconsider the approach if it pushes towards a proof-of-stake system for finality, as that could compromise the essence of Moneroโ€™s proof-of-work basis.

Key Points of Discussion

  • ๐Ÿšซ Many users worry about potential centralization through these proposed checkpoints.

  • โš ๏ธ Some critics highlight risks of a consensus chain split, questioning if the 10-block window is too short.

  • ๐Ÿ”„ There's a growing desire among users for decentralized methods in implementing checkpoints for greater vote reliability.

Curiously, the debate around implementing checkpoints reflects broader concerns in the crypto community about balancing security and decentralization. Precedents from other networks show the complexity of such solutions, sparking both innovative ideas and hesitations.

Looking Forward

As the discussion unfolds, the need for a proof of concept specific to Monero becomes a focal point. The community's ability to reach a consensus will ultimately determine whether these checkpoints can provide the much-needed protection against future vulnerabilities.

Will this proposal pave the way for enhanced security, or will it lead to unforeseen complications? Only time will tell.

Predictions on the Horizon

As the debate on the implementation of 10-block checkpoints continues, there's a strong chance we may see a refined proposal emerge from the Monero community. Experts estimate around 60% likelihood that a modified checkpoint system will be endorsed, given the mixed feedback and desire for improved security. A collaborative approach might yield a version that addresses concerns over centralization and consensus splits. The community's focus on establishing a proof of concept could also pave the way for further testing, possibly influencing other cryptocurrencies grappling with similar security issues.

Echoes of Influence

Looking back at the rise and fall of the Music and Arts Movement in the 1960s, one can draw parallels with the current fixation on security within cryptocurrency networks. Just as artists once sought innovative means to create while staying true to their core ideals, crypto enthusiasts now face the challenge of safeguarding their principles while adapting to emerging threats. In both cases, the push for change can spark creativity, yet, some may fear that straying too far from established norms risks losing the essence of what they hold dear.