{ "version": 1, "event_id": "evt_18fc53f138aba645", "url": "https://xiyu.news/events/evt_18fc53f138aba645/", "json": "https://xiyu.news/api/events/evt_18fc53f138aba645.json", "type": "security_incident", "status": "closed", "category": "crypto", "title": { "zh": "Liquid Network 在 3.2 亿美元漏洞事件后恢复出块", "en": "Liquid Network resumes block production after $320M exploit" }, "current_state": { "zh": "Liquid Network 已恢复区块生产，SideSwap 重新开放 L-BTC 交易，但联邦锚定退出仍暂停；储备仅覆盖约85%的 L-BTC 供应，缺口约627 BTC，恢复仍在进行中。", "en": "Liquid Network has resumed block production and SideSwap reopened L-BTC trading, but federation peg-outs remain suspended; reserves cover only ~85% of L-BTC supply, a ~627 BTC shortfall, and recovery is ongoing." }, "first_seen_at": "2026-09-10T22:43:07.725464+00:00", "last_updated_at": "2026-09-12T04:55:43.358323+00:00", "last_material_change_at": "2026-09-12T04:55:43.358323+00:00", "confidence": 0.75, "updates_count": 2, "sources_count": 2, "entities": [ "l-btc", "liquid", "liquid-network", "reserves" ], "identifiers": [], "topics": [ "bitcoin-sidechain", "blockchain-recovery", "l-btc", "liquid-network", "peg-out-suspension", "reserves", "security-incident" ], "updates": [ { "update_id": "upd_0994e70ba0d0ffe3", "event_id": "evt_18fc53f138aba645", "occurred_at": "2026-09-10T16:38:16Z", "published_at": "2026-09-10T16:38:16Z", "first_seen_at": "2026-09-10T22:43:07.725464Z", "time_precision": "published", "update_type": "initial", "material_change": true, "title_zh": "Liquid Network 在 3.2 亿美元漏洞事件后恢复出块", "title_en": "Liquid Network resumes block production after $320M exploit", "what_changed_zh": "Liquid Network 在部署紧急软件更新后于周四恢复出块，但作为预防措施，交易与锚定（peg）操作仍然暂停，网络正在被持续监控以确认完全稳定。此次重启源于 9 月 6 日的事件：约 4,000 枚 BTC（价值约 3.2 亿美元）通过 Elements 软件中的一个漏洞从该网络的联合钱包中被提取。\n\nLiquid 是规模最大、运行时间最长的比特币侧链之一，这次提取掏空了其联合钱包约 95% 的余额，暴露出联邦式跨链桥设计中高度集中的信任如何转化为系统性风险。事件直接波及 L-BTC 持有者、在 Liquid 上发行代币化资产与稳定币的机构，以及依赖其进行结算的交易所和做市商。\n\n攻击者利用了 Elements 范围证明（range proof）验证缓存中的漏洞，铸造出约 4,000 枚无真实背书的 L-BTC，随后通过 SideSwap 的授权退出锚定路径兑换为真实 BTC。紧急补丁 Elements v23.3.4 加固了范围证明所使用的缓存键；在受影响桥节点完成修补后，3,400 枚 BTC（约 2.7 亿美元）被归还，截至 9 月 7 日仍有约 598 枚 BTC（约 4,600 万美元）未追回。", "what_changed_en": "The Liquid Network resumed block production after deploying emergency software updates following a $320 million Bitcoin withdrawal exploit, though transactions and peg operations remain suspended during recovery.", "current_state_zh": "Liquid Network 在部署紧急软件更新后于周四恢复出块，但作为预防措施，交易与锚定（peg）操作仍然暂停，网络正在被持续监控以确认完全稳定。此次重启源于 9 月 6 日的事件：约 4,000 枚 BTC（价值约 3.2 亿美元）通过 Elements 软件中的一个漏洞从该网络的联合钱包中被提取。\n\nLiquid 是规模最大、运行时间最长的比特币侧链之一，这次提取掏空了其联合钱包约 95% 的余额，暴露出联邦式跨链桥设计中高度集中的信任如何转化为系统性风险。事件直接波及 L-BTC 持有者、在 Liquid 上发行代币化资产与稳定币的机构，以及依赖其进行结算的交易所和做市商。\n\n攻击者利用了 Elements 范围证明（range proof）验证缓存中的漏洞，铸造出约 4,000 枚无真实背书的 L-BTC，随后通过 SideSwap 的授权退出锚定路径兑换为真实 BTC。紧急补丁 Elements v23.3.4 加固了范围证明所使用的缓存键；在受影响桥节点完成修补后，3,400 枚 BTC（约 2.7 亿美元）被归还，截至 9 月 7 日仍有约 598 枚 BTC（约 4,600 万美元）未追回。", "current_state_en": "The Liquid Network resumed block production after deploying emergency software updates following a $320 million Bitcoin withdrawal exploit, though transactions and peg operations remain suspended during recovery.", "detailed_summary_zh": "The Liquid Network resumed block production after deploying emergency software updates following a $320 million Bitcoin withdrawal exploit, though transactions and peg operations remain suspended during recovery.", "detailed_summary_en": "The Liquid Network resumed block production after deploying emergency software updates following a $320 million Bitcoin withdrawal exploit, though transactions and peg operations remain suspended during recovery.", "background_zh": "Liquid 是 Blockstream 于 2018 年推出的开源比特币侧链，支持更快速、更保密的 BTC 转账，并可用于发行稳定币、证券型代币和债券等数字资产。用户持有的是 L-BTC，它与 BTC 按 1:1 锚定，背后是在由名为 functionary 的联邦节点共同管理的钱包中锁定的真实比特币。Elements 是支撑该网络的开源代码库，其机密交易（Confidential Transactions）功能使用范围证明在不公开金额的前提下验证交易是否合法，而攻击者利用的正是这些验证结果缓存环节中的缺陷。", "background_en": "Liquid is an open-source Bitcoin sidechain launched by Blockstream in 2018 that enables faster, more confidential BTC transfers and the issuance of digital assets such as stablecoins, tokenized securities and bonds. Users hold L-BTC, which is pegged 1:1 to BTC and backed by real bitcoin locked in a wallet collectively managed by federated nodes called functionaries. Elements is the open-source codebase underpinning the network, and its Confidential Transactions feature uses range proofs to validate that transaction amounts are legitimate without revealing them publicly; a flaw in the caching of those verifications is what the attacker exploited.", "community_discussion_zh": "", "community_discussion_en": "", "market_impact_zh": "传导渠道主要是锚定信心：由于锚定操作与 PAK 授权提现均被暂停，L-BTC 兑换为 BTC 的赎回通道受限，这直接影响在 Liquid 上结算的交易所、发行方和流动性提供者，包括与 SideSwap 相关的退出路径。该事件还可能推动市场重新评估联邦式比特币二层与跨链桥设计中的托管风险，而 BTC/L-BTC 储备中尚未追回的约 598 枚 BTC 缺口仍是待解决的关键变量。", "market_impact_en": "The transmission channel is peg confidence: with peg operations and PAK-authorized peg-outs suspended, the redemption path connecting L-BTC to BTC is constrained, which bears on venues, issuers and liquidity providers that settle on Liquid, including SideSwap-linked exits. The incident also feeds into a broader reassessment of custody and federation risk across federated Bitcoin layer-2 and bridge designs, and the outstanding ~598 BTC shortfall in the BTC/L-BTC reserve is the key variable still being resolved.", "importance_score": 8.5, "references": [ { "url": "https://blockstream.com/liquid/", "title": "The Liquid Network | Bitcoin layer-2 solution for digital ..." }, { "url": "https://news.bitcoin.com/crypto-news/liquid-network-resumes-block-production-after-4000-btc-exploit/", "title": "Liquid Network Resumes Block Production After 4,000 BTC ..." }, { "url": "https://www.kucoin.com/news/flash/liquid-federation-discloses-4-000-btc-vulnerability-incident", "title": "Liquid Federation Discloses 4,000 BTC Vulnerability Incident | KuCoin" } ], "confidence": 0.75, "story_ids": [ "rss:cointelegraph.com_rss:656b87c8d60ff48b" ], "sources": [ { "url": "https://cointelegraph.com/news/liquid-network-resumes-block-production-after-320m-exploit?utm_source=rss_feed&utm_medium=rss&utm_campaign=rss_partner_inbound", "label": "Cointelegraph", "source_type": "rss", "official": false } ] }, { "update_id": "upd_e4935ec08ab9160a", "event_id": "evt_18fc53f138aba645", "occurred_at": "2026-09-12T00:30:41Z", "published_at": "2026-09-12T00:30:41Z", "first_seen_at": "2026-09-12T04:55:43.358323Z", "time_precision": "published", "update_type": "aftermath", "material_change": true, "title_zh": "SideSwap 恢复 L-BTC 交易，但储备仅覆盖约 85% 供应量", "title_en": "L-BTC resumes trading with reserves covering just 85% of supply", "what_changed_zh": "SideSwap 在 Liquid 恢复区块生产后重新开放了 L-BTC 市场，但联邦锚定退出仍暂停；9月10日数据显示储备仅覆盖约85.15%的L-BTC供应，缺口约627 BTC。", "what_changed_en": "SideSwap reopened L-BTC markets after Liquid resumed block production, but federation peg-outs remain suspended; Sept. 10 data shows reserves cover only ~85.15% of L-BTC supply, a ~627 BTC shortfall.", "current_state_zh": "Liquid Network 已恢复区块生产，SideSwap 重新开放 L-BTC 交易，但联邦锚定退出仍暂停；储备仅覆盖约85%的 L-BTC 供应，缺口约627 BTC，恢复仍在进行中。", "current_state_en": "Liquid Network has resumed block production and SideSwap reopened L-BTC trading, but federation peg-outs remain suspended; reserves cover only ~85% of L-BTC supply, a ~627 BTC shortfall, and recovery is ongoing.", "detailed_summary_zh": "SideSwap reopened L-BTC markets after Liquid resumed block production, but federation peg-outs remain suspended and reserves cover only about 85% of outstanding L-BTC, leaving a roughly 627 BTC shortfall.", "detailed_summary_en": "SideSwap reopened L-BTC markets after Liquid resumed block production, but federation peg-outs remain suspended and reserves cover only about 85% of outstanding L-BTC, leaving a roughly 627 BTC shortfall.", "background_zh": "Liquid 是一条由功能节点（functionaries）组成的联邦运营的开源比特币侧链：用户通过 peg-in 将 BTC 转入并生成 L-BTC，通过 peg-out 销毁 L-BTC，并由联邦多签钱包在获得确认后释放 BTC 回到比特币主链。由于联邦制侧链依赖一组既定的可信成员而非比特币自身的共识，1:1 锚定的完整性取决于联邦的密钥与控制流程。9 月 6 日的事件使约 3,400 BTC 从联邦钱包转出，9 月 7 日约有 3,400 BTC 被报告回流，随后出块以不含交易的受控模式重启。储备缺口、市场重开与仍未恢复的 peg-out 通道，是同一事件的三个不同环节。", "background_en": "Liquid is an open-source Bitcoin sidechain operated by a federation of functionaries, where users move BTC onto the chain through a peg-in that creates L-BTC and back to Bitcoin through a peg-out that burns L-BTC and directs the federation's multisig wallet to release BTC after confirmations. Because a federated sidechain depends on a defined set of trusted members rather than Bitcoin's own consensus, the integrity of the 1:1 peg rests on the federation's keys and controls. The Sept. 6 incident moved roughly 3,400 BTC out of the federation wallet, with about 3,400 BTC reported as returning on Sept. 7, and block production was later restarted in a controlled mode without transactions. This reserve gap, the reopened venue and the still-closed peg-out route are three separate parts of the same event.", "community_discussion_zh": "", "community_discussion_en": "", "market_impact_zh": "直接暴露风险的是 L-BTC 持有者与 SideSwap 等 Liquid 上的交易场所：在联邦 peg-out 暂停的情况下，L-BTC 交易的是一个仅由部分储备支撑的债权，而非可赎回为 BTC 的索取权；任何折价都会通过通常连接这两种资产的赎回套利渠道传导，而该渠道目前已被关闭。托管 L-BTC 或在 Liquid 上结算代币化资产的交易所与发行方，面临托管与流动性层面的不确定性；该事件也会加剧市场对联邦制侧链与跨链桥信任模型的审视，进而影响围绕 BTC 二层资产的普遍情绪。", "market_impact_en": "The direct exposure sits with L-BTC holders and Liquid venues such as SideSwap: with federation peg-outs suspended, L-BTC trades as a claim on a fractionally backed reserve rather than a redeemable claim on BTC, and any discount transmits through the redemption-arbitrage channel that normally links the two assets — a channel that is currently closed. Exchanges and issuers that custody L-BTC or settle tokenized assets on Liquid face custody and liquidity uncertainty, and the episode feeds broader scrutiny of federated sidechain and bridge trust models, which can weigh on sentiment toward BTC layer-2 assets.", "importance_score": 8.5, "references": [ { "url": "https://docs.liquid.net/docs/advanced-pegin-pegout", "title": "Peg-in and Peg-out - Documentation - The Liquid Network" }, { "url": "https://help.blockstream.com/hc/en-us/articles/900001551783-What-is-a-Liquid-peg-out", "title": "What is a Liquid peg-out? – Blockstream Help Center" }, { "url": "https://blockstream.com/liquid/", "title": "The Liquid Network | Bitcoin layer-2 solution for digital asset issuance." } ], "confidence": 0.95, "story_ids": [ "rss:cryptoslate.com_feed_:62c40af23e13e1cc" ], "sources": [ { "url": "https://cryptoslate.com/l-btc-resumes-trading-with-reserves-covering-just-85-of-supply/", "label": "CryptoSlate", "source_type": "rss", "official": false } ] } ] }