{"id":544238,"date":"2026-01-20T11:40:54","date_gmt":"2026-01-20T11:40:54","guid":{"rendered":"https:\/\/www.crypto-news-flash.com\/?p=1277180"},"modified":"2026-01-20T11:40:54","modified_gmt":"2026-01-20T11:40:54","slug":"monero-privacy-upgrade-progresses-as-fcmp-moves-closer-to-production","status":"publish","type":"post","link":"https:\/\/e-bitco.in\/index.php\/2026\/01\/20\/monero-privacy-upgrade-progresses-as-fcmp-moves-closer-to-production\/","title":{"rendered":"Monero Privacy Upgrade Progresses as FCMP++ Moves Closer to Production"},"content":{"rendered":"<div class=\"eth-editorial-banner\"> <img decoding=\"async\" class=\"eth-editorial-logo\" src=\"https:\/\/www.crypto-news-flash.com\/wp-content\/uploads\/2025\/11\/cnf2-scaled-1-1-1.png\" alt=\"Crypto News Flash\"> <span class=\"eth-editorial-text\">All news is rigorously fact-checked and reviewed by leading blockchain experts and seasoned industry insiders.<\/span> <\/div>\n<ul>\n<li><strong>Monero released FCMP++ and CARROT alpha stressnet v1.5 to cut memory use and improve node sync performance.<\/strong><\/li>\n<li><strong>FCMP++ aims to expand the anonymity set per input from 16 to as high as 100,000,000 outputs across the chain.<\/strong><\/li>\n<\/ul>\n<hr>\n<p><span>Monero\u2019s planned privacy upgrade is advancing as developers continue testing Full-Chain Membership Proofs (FCMP++) alongside the CARROT integration. Monero said development is progressing well, <\/span><a href=\"https:\/\/github.com\/seraphis-migration\/monero\/releases\/tag\/v0.19.0.0-alpha.1.5\" target=\"_blank\" rel=\"nofollow noopener\"><span>citing<\/span><\/a><span> the release of a new alpha stressnet software version and ongoing preparation for a beta stressnet, as well as audits related to CARROT.<\/span><\/p>\n<p><span>FCMP++ is designed to replace Monero\u2019s current ring signature model with a new proof system that expands the anonymity set for each transaction input. Under the existing structure, a spend is proven within a limited set of outputs. FCMP++ aims to prove that a spent output is any output on the <\/span><a href=\"https:\/\/www.crypto-news-flash.com\/blockchain\/\" target=\"_blank\" rel=\"noopener\"><span>blockchain.<\/span><\/a><span>&nbsp;<\/span><\/p>\n<blockquote class=\"twitter-tweet\">\n<p dir=\"ltr\" lang=\"en\">Full-Chain Membership Proofs (FCMP++) and CARROT development is progressing well, with a new version of the alpha stressnet software released and the developers planning for beta stressnet and audits of the CARROT integration!<\/p>\n<p>\u2018Full-Chain Membership Proofs prove the output spent\u2026 <a href=\"https:\/\/t.co\/f1s8FvJsaV\">https:\/\/t.co\/f1s8FvJsaV<\/a><\/p>\n<p>\u2014 Monero (XMR) (@monero) <a href=\"https:\/\/twitter.com\/monero\/status\/2013337771176255969?ref_src=twsrc%5Etfw\" target=\"_blank\" rel=\"noopener\">January 19, 2026<\/a><\/p>\n<\/blockquote>\n<p><span>Monero said this approach would move each input from an immediate anonymity set of 16 to as high as 100,000,000, addressing privacy risks tied to smaller anonymity pools.<\/span><\/p>\n<p><span>The latest milestone includes the pre-release of FCMP++ and CARROT alpha stressnet v1.5, published under version v0.19.0.0-alpha.1.5. The release is intended to improve stability during testing, with developers stating it mitigates out-of-memory failures and introduces multiple performance upgrades.&nbsp;<\/span><\/p>\n<p><span>Changes focus on reducing the memory footprint of FCMP++ verification, improving multithreaded synchronization, and adjusting how nodes download blocks during sync based on real-time performance.<\/span><\/p>\n<h3><b>Monero\u2019s Alpha Stressnet v1.5 Improves FCMP++ Verification and Sync Performance<\/b><\/h3>\n<p><span>In the release notes, v1.5 also contains changes to avoid chain downloading overload, fix sync state problems with transaction pools filled, and improve connection stability when networks are synchronized.<\/span><\/p>\n<p><span>Developers also introduced optimizations that speed up verification by changing when certain data points are decompressed and by adjusting proof calculations.<\/span><\/p>\n<p><span>Wallet-related updates were also included to support stressnet testing. These changes fix false positives when receiving CARROT transactions. They also improve input selection rules when building a transaction. In addition, the wallet now excludes zero-amount CARROT outputs from some transfer reports. Developers also addressed rare cases where key image tracking could trigger unexpected double-spend errors.<\/span><\/p>\n<p><span>The stressnet itself was created as a public testing environment and <\/span><a href=\"https:\/\/www.crypto-news-flash.com\/what-are-hard-forks\/\" target=\"_blank\" rel=\"noopener\"><span>hard forked<\/span><\/a><span> from the existing Monero testnet on October 3, 2025, at block 2,847,330. It is intended to give developers and community testers a live network to evaluate the combined FCMP++ and CARROT integration before rollout steps are considered.<\/span><\/p>\n<p><span>Developers of the <\/span><a href=\"https:\/\/www.crypto-news-flash.com\/what-are-privacy-coins\/\" target=\"_blank\" rel=\"noopener\"><span>privacy-focused network <\/span><\/a><span>have warned that the stressnet is still alpha software and may contain bugs. They also noted that some features are not yet supported, including hardware wallets, multisig, watch-only wallets, transaction proofs, and a block explorer.&nbsp;<\/span><\/p>\n<p><span>The development team has encouraged testers to report issues in detail to help improve readiness ahead of the planned beta phase and audit work.<\/span><\/p>\n<p><span>Monero price is at <\/span><b>$565, <\/b>dipping <span><strong>11%<\/strong> <\/span>in the past 24 hours, the highest drop among the top 100 coins, <span>with a 24-hour trading volume of<\/span> $286.2 million at<span> the time of writing.<\/span><\/p>\n<p> <a href=\"https:\/\/www.crypto-news-flash.com\/\">Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>All news is rigorously fact-checked and reviewed by leading blockchain experts and seasoned industry insiders. Monero released FCMP++ and CARROT alpha stressnet v1.5 to cut memory use and improve node sync performance. FCMP++ aims to expand the anonymity set per input from 16 to as high as 100,000,000 outputs across the chain. Monero\u2019s planned privacy [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":544239,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[152,25,153],"class_list":{"0":"post-544238","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-other","8":"tag-monero","9":"tag-news","10":"tag-xmr"},"_links":{"self":[{"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/posts\/544238","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/comments?post=544238"}],"version-history":[{"count":0,"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/posts\/544238\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/media\/544239"}],"wp:attachment":[{"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/media?parent=544238"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/categories?post=544238"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/e-bitco.in\/index.php\/wp-json\/wp\/v2\/tags?post=544238"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}