{"id":15454,"date":"2025-07-28T06:38:25","date_gmt":"2025-07-27T23:38:25","guid":{"rendered":"https:\/\/bitcoinvn.io\/news\/?p=15454"},"modified":"2025-07-28T06:39:40","modified_gmt":"2025-07-27T23:39:40","slug":"can-you-trust-proof-of-stake-pos-security","status":"publish","type":"post","link":"https:\/\/bitcoinvn.io\/news\/can-you-trust-proof-of-stake-pos-security\/","title":{"rendered":"Can You Trust Proof-of-Stake (PoS) Security &#8211; The Checkpointing Case?"},"content":{"rendered":"<p>Proof-of-Stake (PoS), a consensus mechanism used by blockchains like Ethereum, faces growing skepticism due to its reliance on checkpointing and real-world failures, such as Solana\u2019s network outages and Avalanche\u2019s consensus issues. Even Ethereum co-founder Vitalik Buterin<sup>[1]<\/sup>\u00a0has proposed simplifying Ethereum\u2019s PoS design<sup>[2]<\/sup>, inspired by Bitcoin\u2019s minimalism, raising questions about PoS\u2019s ability to withstand attacks like <strong><b>long-range attacks<\/b><\/strong>.<\/p>\n<p>To better navigate the digital asset landscape, this analysis examines the security of Proof-of-Stake (PoS), with a particular focus on its use of checkpoints, and offers alternative insights.<\/p>\n<h2><strong><b>Understanding Proof-of-Stake (PoS)<\/b><\/strong><\/h2>\n<p>In PoS, participants &#8220;stake&#8221; cryptocurrency to validate blockchain transactions, earning rewards for honest behavior while risking &#8220;slashing&#8221; for dishonesty. Unlike Bitcoin\u2019s energy-intensive Proof-of-Work (PoW), PoS prioritizes \u201clow cost\u201d but introduces unique security challenges.<\/p>\n<figure id=\"attachment_15455\" aria-describedby=\"caption-attachment-15455\" style=\"width: 686px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-15455 size-full\" src=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2025\/07\/can-you-trust-pos.png\" alt=\"Wherever there is surplus energy to be harvested, Bitcoin miners will quickly co-locate\" width=\"686\" height=\"386\" srcset=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2025\/07\/can-you-trust-pos.png 686w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2025\/07\/can-you-trust-pos-300x169.png 300w\" sizes=\"auto, (max-width: 686px) 100vw, 686px\" \/><figcaption id=\"caption-attachment-15455\" class=\"wp-caption-text\">Wherever there is surplus energy to be harvested, Bitcoin miners will quickly co-locate<\/figcaption><\/figure>\n<h2><b>The PoS Defense: Checkpoints and Finality<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">PoS counters long-range attacks &#8211; where attackers <\/span><b>rewrite blockchain history at low cost<\/b><span style=\"font-weight: 400;\"> &#8211; using:<\/span><\/p>\n<ul>\n<li><b><\/b><strong><b>Weak Subjectivity<\/b><\/strong><strong><sup><b>[3]<\/b><\/sup><\/strong><strong><b>and Checkpoints:<\/b><\/strong>\u00a0New nodes rely on &#8220;social consensus&#8221; and trusted checkpoints to verify history.<\/li>\n<li><b><\/b><strong><b>Finality<\/b><\/strong><strong><sup><b>[4]<\/b><\/sup><\/strong><strong><b>:<\/b><\/strong>Blocks deemed &#8220;finalized&#8221; through validator votes are considered immutable.<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Proponents argue these mechanisms ensure past transactions are unchangeable, thwarting long-range attacks.<\/span><\/p>\n<figure id=\"attachment_15456\" aria-describedby=\"caption-attachment-15456\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-15456\" src=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2025\/07\/can-you-trust-pos-03.png\" alt=\"Classic 2016 overview by Jameson Lopp - still valid &amp; lindy\" width=\"600\" height=\"250\" srcset=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2025\/07\/can-you-trust-pos-03.png 618w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2025\/07\/can-you-trust-pos-03-300x125.png 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-15456\" class=\"wp-caption-text\">Classic 2016 overview by <a href=\"https:\/\/blog.lopp.net\/bitcoin-the-trust-anchor-in-a-sea-of-blockchains\/\" target=\"_blank\" rel=\"noopener\">Jameson Lopp<\/a> &#8211; still valid &amp; lindy<\/figcaption><\/figure>\n<h2><b>The Critics: PoS Flaws and Real-World Failures<\/b><\/h2>\n<p>Critics, most notably crypto expert Hugo<sup>[5]<\/sup>, argue PoS\u2019s security model is flawed, with real-world issues amplifying these concerns:<\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Circular Logic in Checkpoints:<\/b><span style=\"font-weight: 400;\"> Checkpoints depend on pre-existing consensus, creating a circular problem\u2014you need agreement to establish agreement. This mirrors trusting a bank\u2019s balance without auditing transactions, undermining decentralized trust. Most users don\u2019t run full PoS nodes or verify code, further relying on social trust.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Illusory Finality:<\/b><span style=\"font-weight: 400;\"><span style=\"font-weight: 400;\"> Absolute finality is unattainable in decentralized systems; even Bitcoin\u2019s confirmations are probabilistic. <\/span><\/span>PoS\u2019s finality claims overstate reliability, as seen in Avalanche\u2019s consensus failures<sup>[6]<\/sup>, where agreement on the ledger\u2019s state faltered.<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Band-Aid Fixes: <\/b>Checkpoints are temporary workarounds, not solutions, for deeper consensus challenges like network limits or fair validator selection. Solana\u2019s multiple network outages<sup>[7]<\/sup>highlight how these unresolved issues disrupt operations.<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Centralization Risks:<\/b><span style=\"font-weight: 400;\"> Many PoS networks, like Ethereum, Solana and Avalanche, are criticized as &#8220;Decentralized In Name Only&#8221; (DINOs), with centralized control masking vulnerabilities. These failures suggest hidden operational flaws, akin to traditional financial systems that falter over time.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Staker Vulnerabilities:<\/b><span style=\"font-weight: 400;\"> Staked funds are locked, often in pools, stripping users of control. Slashing can occur without user involvement if validators misbehave, unlike Bitcoin\u2019s miner autonomy. This loss of control heightens risks for investors.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Long-Term Fragility:<\/b><span style=\"font-weight: 400;\"> PoS\u2019s one-time capital cost lacks PoW\u2019s ongoing energy expense, risking weaker security over decades. Critics argue PoS resembles a bridge that appears sturdy today but may collapse under long-term stress, a concern reinforced by PoS networks\u2019 operational struggles.<\/span><\/li>\n<\/ul>\n<h2><b>Conclusion<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">While Proof-of-Stake (PoS) offers appealing \u201cquick fixes\u201d, its fundamental security model faces serious questions. Concerns like <\/span><b>circular trust<\/b><span style=\"font-weight: 400;\">, <\/span><b>questionable &#8220;finality,&#8221;<\/b><span style=\"font-weight: 400;\"> and <\/span><b>real-world centralization risks<\/b><span style=\"font-weight: 400;\"> &#8211; highlighted by network outages and control issues &#8211; demand a critical look. For anyone involved in crypto, whether you&#8217;re investing or building, understanding these trade-offs is not just academic; but essential for making smart, secure decisions in a landscape that&#8217;s still finding its footing.<\/span><\/p>\n<p><b>Further reading:<\/b><\/p>\n<p><a href=\"https:\/\/bitcoinvn.io\/news\/checkpoints-are-circular-logic-in-pos\" target=\"_blank\" rel=\"noopener\">\u201cCheckpoints\u201d are circular logic in PoS flawed security model<\/a><\/p>\n<p><b>Looking to buy Bitcoin instead &#8211; the world\u2019s most secure Proof-of-Work system?<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Check out <\/span><a href=\"https:\/\/bitcoinvn.io\/?deposit=usdt&amp;settle=btc\" target=\"_blank\" rel=\"noopener\"><span style=\"font-weight: 400;\">BitcoinVN<\/span><\/a><span style=\"font-weight: 400;\"> &#8211; Vietnam\u2019s premier Bitcoin Exchange service<\/span><\/p>\n<p>&#8212;<\/p>\n<p><span style=\"font-weight: 400;\">[1]<\/span><a href=\"https:\/\/www.coindesk.com\/tech\/2025\/07\/02\/vitalik-buterin-ethereum-at-risk-if-decentralization-is-just-a-catchphrase\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">https:\/\/www.coindesk.com\/tech\/2025\/07\/02\/vitalik-buterin-ethereum-at-risk-if-decentralization-is-just-a-catchphrase<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">[2]<\/span><a href=\"https:\/\/cointelegraph.com\/news\/vitalikbuterin-ethereum-simplification-bitcoin-inspired-redesign\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">https:\/\/cointelegraph.com\/news\/vitalikbuterin-ethereum-simplification-bitcoin-inspired-redesign<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">[3]<\/span><a href=\"https:\/\/ethereum.org\/en\/developers\/docs\/consensus-mechanisms\/pos\/weak-subjectivity\/\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">https:\/\/ethereum.org\/en\/developers\/docs\/consensus-mechanisms\/pos\/weak-subjectivity\/<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">[4]<\/span><a href=\"https:\/\/www.coindesk.com\/learn\/top-questions-about-proof-of-stake-and-staking-answered\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">https:\/\/www.coindesk.com\/learn\/top-questions-about-proof-of-stake-and-staking-answered<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">[5]<\/span><a href=\"https:\/\/x.com\/hugomofn\/status\/1050771000906854402\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">https:\/\/x.com\/hugomofn\/status\/1050771000906854402<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">[6]<\/span><a href=\"https:\/\/www.coindesk.com\/markets\/2023\/03\/23\/avalanche-blockchains-x-and-c-networks-see-brief-outage\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">https:\/\/www.coindesk.com\/markets\/2023\/03\/23\/avalanche-blockchains-x-and-c-networks-see-brief-outage<\/span><\/a><\/p>\n<p><span style=\"font-weight: 400;\">[7]<\/span><a href=\"https:\/\/www.fxstreet.com\/amp\/cryptocurrencies\/news\/why-did-the-solana-blockchain-halt-again-202206081133\" target=\"_blank\" rel=\"noopener\"> <span style=\"font-weight: 400;\">https:\/\/www.fxstreet.com\/amp\/cryptocurrencies\/news\/why-did-the-solana-blockchain-halt-again-202206081133<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Proof-of-Stake (PoS), a consensus mechanism used by blockchains like Ethereum, faces growing skepticism due to its reliance on checkpointing and real-world failures, such as Solana\u2019s network outages and Avalanche\u2019s consensus issues. Even Ethereum co-founder Vitalik Buterin[1]\u00a0has proposed simplifying Ethereum\u2019s PoS design[2], inspired by Bitcoin\u2019s minimalism, raising questions about PoS\u2019s ability to withstand attacks like long-range [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":15457,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1843,10549],"tags":[],"class_list":["post-15454","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-experts","category-featured-sub-panel"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Can You Trust Proof-of-Stake (PoS) Security - The Checkpointing Case?<\/title>\n<meta name=\"description\" content=\"An in-depth look at PoS security issues - from circular checkpoints to network outages - raising doubts about the true resilience of Proof-of-Stake.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bitcoinvn.io\/news\/can-you-trust-proof-of-stake-pos-security\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Can You Trust Proof-of-Stake (PoS) Security - The Checkpointing Case?\" \/>\n<meta property=\"og:description\" content=\"An in-depth look at PoS security issues - from circular checkpoints to network outages - raising doubts about the true resilience of Proof-of-Stake.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bitcoinvn.io\/news\/can-you-trust-proof-of-stake-pos-security\/\" \/>\n<meta property=\"og:site_name\" content=\"BitcoinVN News\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/facebook.com\/www.bitcoinvn.io\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-27T23:38:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-27T23:39:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2025\/07\/can-you-trust-pos-01.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"1014\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Quynh Nguyen\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@bitcoin_vietnam\" \/>\n<meta name=\"twitter:site\" content=\"@bitcoin_vietnam\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Quynh Nguyen\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/bitcoinvn.io\/news\/can-you-trust-proof-of-stake-pos-security\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/bitcoinvn.io\/news\/can-you-trust-proof-of-stake-pos-security\/\"},\"author\":{\"name\":\"Quynh Nguyen\",\"@id\":\"https:\/\/bitcoinvn.io\/news\/#\/schema\/person\/e791e268b1e1e5d724f1046a62ddb1ff\"},\"headline\":\"Can You Trust Proof-of-Stake (PoS) Security &#8211; 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