{"id":47684,"date":"2025-09-15T22:01:35","date_gmt":"2025-09-15T22:01:35","guid":{"rendered":"https:\/\/dogewisperer.com\/?p=47684"},"modified":"2025-09-15T22:01:35","modified_gmt":"2025-09-15T22:01:35","slug":"18-block-reorg-slams-monero-erasing-36-minutes-of-blockchain","status":"publish","type":"post","link":"https:\/\/dogewisperer.com\/?p=47684","title":{"rendered":"18 Block Reorg Slams Monero, Erasing 36 Minutes Of Blockchain"},"content":{"rendered":"
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Monero\u2019s privacy chain endured its deepest-ever chain reorganization in the last 24 hours, when 18 consecutive blocks were replaced, briefly \u201crewriting\u201d roughly 36 minutes of ledger history and invalidating about 118 already-confirmed transactions. Multiple independent monitors flagged the event late Sunday into Monday, describing a rollback spanning block heights 3,499,659 through 3,499,676 before nodes converged on a new best chain. With Monero targeting two-minute blocks, an 18-block reorg translates to ~36 minutes of history\u2014an extraordinary depth for a mature proof-of-work network.<\/p>\n

Monero Hit By Record 18 Block Reorg<\/h2>\n

\u201cThe attack against Monero is back. Hours ago XMR experienced an 18-block reorg. If you accept XMR make sure to wait for more than the usual 10 confs,\u201d warned<\/a> independent monitor OrangeFren as alerts circulated across crypto social channels. The post, amplified by several industry accounts, captured the immediate operational takeaway for merchants and services: raise confirmation thresholds until conditions normalize.<\/p>\n

The incident comes a month after the controversial AI-oriented project Qubic claimed to have marshaled a majority<\/a> of Monero\u2019s hashrate, a campaign that coincided with a six-block reorg in August and led to temporary deposit suspensions at some exchanges<\/a>. Security researchers at the time cautioned that the August event did not, by itself, prove sustained 51% dominance\u2014streaks of mining \u201cluck\u201d can produce short, probabilistic reorganizations\u2014but they also warned that persistent hashrate concentration raises the ceiling on how deep such reorgs can go. Monday\u2019s 18-block episode materially raises that ceiling.<\/p>\n

Community voices reacted with a mix of alarm and realism. SlowMist founder Yu Xian commented<\/a> via X: \u201cIf no one in the Monero community takes the issue of block reorganization seriously, then this Sword of Damocles will always hang over Monero\u2019s head\u2026 It may not necessarily carry out a double-spend attack, but having this capability\u2026 It doesn\u2019t even have to strictly exceed 51% of the hash power\u2026\u201d<\/p>\n

Qubic founder Sergey Ivancheglo, who is known by the alias \u201cCome-from-Beyond\u201d, posted via X: \u201cMonero will stay because Qubic wanted it to stay.\u201d<\/p>\n

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#Monero<\/a> will stay because #Qubic<\/a> wanted it to stay.https:\/\/t.co\/49MZzF5WaI<\/a> pic.twitter.com\/qd7wPVoDOu<\/a><\/p>\n

\u2014 Come-from-Beyond (@c___f___b) September 14, 2025<\/a><\/p>\n<\/blockquote>\n

At a technical level, a chain reorg occurs when two valid histories compete and the network ultimately converges on the one with the most accumulated proof-of-work, discarding the other and any transactions exclusive to it. In Monero\u2019s design, two-minute target block intervals and dynamic block sizing aim to keep throughput smooth while preserving privacy primitives like ring signatures and stealth addresses.<\/p>\n

In practice, however, a miner or pool with outsized hashpower can\u2014at least in bursts\u2014privately extend a side chain and then release it, \u201cout-working\u201d the public tip and forcing nodes to reorganize. That is what appears to have happened here, with a depth that exceeded the de facto 10-confirmation comfort zone commonly used by wallets and exchanges.<\/p>\n

The August\u2013September sequence has re-opened a contentious debate<\/a> inside Monero about defenses. Proposals span the spectrum: \u201crolling 10-block checkpoints\u201d that finalize recent blocks to cap reorg depth; adopting elements akin to Dash\u2019s ChainLocks to bolt on a finality layer; \u201cdetective mining\u201d incentives to counter selfish-mining strategies at the pool level; and even merge-mining concepts that would piggyback Monero\u2019s security on a larger PoW base.<\/p>\n

Each trade-off is sharp: checkpoints and ChainLocks introduce degrees of centralization or new trust assumptions, while pool-level changes may be unevenly adopted. The community has not yet coalesced around a specific fix, but the urgency has unmistakably increased.<\/p>\n

Markets treated the event with surprising resilience. Within hours, XMR rallied between roughly 5% and 7%, trading above $300 on some venues.<\/p>\n

\"Monero<\/div>\n","protected":false},"excerpt":{"rendered":"

Monero\u2019s privacy chain endured its deepest-ever chain reorganization in the last 24 hours, when 18 consecutive blocks were replaced, briefly \u201crewriting\u201d roughly 36 minutes of ledger history and invalidating about 118 already-confirmed transactions. Multiple independent monitors flagged the event late Sunday into Monday, describing a rollback spanning block heights 3,499,659 through 3,499,676 before nodes converged […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":0,"footnotes":""},"categories":[2],"tags":[3,4,5],"class_list":["post-47684","post","type-post","status-publish","format-standard","hentry","category-news","tag-crypto","tag-doge","tag-news"],"_links":{"self":[{"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/posts\/47684","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=47684"}],"version-history":[{"count":0,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=\/wp\/v2\/posts\/47684\/revisions"}],"wp:attachment":[{"href":"https:\/\/dogewisperer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=47684"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=47684"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dogewisperer.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=47684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}