InterNull: Achieving Cross-Chain Transaction Privacy Through ECDSA One-Time Signatures

InterNull: Achieving Cross-Chain Transaction Privacy Through ECDSA One-Time Signatures | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article InterNull: Achieving Cross-Chain Transaction Privacy Through ECDSA One-Time Signatures Jamshed Memon This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8555306/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract We present InterNull, a blockchain privacy protocol that achieves transaction unlinkability through Elliptic Curve Digital Signature Algorithm (ECDSA) one-time signatures (OTS). Unlike immutable zero-knowledge mixers that prevent regulatory compliance, InterNull introduces a Federated Privacy Model. While transac- tions remain cryptographically unlinkable to on-chain observers, the Distributed Key Generation (DKG) committee retains a threshold capability to reconstruct transaction graphs. This enables a selective de- anonymization mechanism where a quorum of nodes ( -of- t n ) can cooperate to identify illicit funds without compromising the privacy of legitimate users. The protocol enables multi-chain privacy via deferred, chain-specific key allocation and fixed-denomination multi-key splitting. We analyze security under a bounded exposure window defined by blockchain slot la- tency ( tslot ≪ any practical ECDLP break), ensuring forward secrecy against future quantum adversaries. Threshold DKG pre-computes Merkle trees of withdrawal public keys, yielding fast withdrawals (~85% low- er gas than zk-SNARK mixers). Deployments on Ethereum, BNB Chain, Base, and Solana validate the proto- col's performance and its unique position as a bridge between DeFi privacy and Anti-Money Laundering (AML) compliance. blockchain privacy one-time signatures cross-chain protocols distributed key generation quantum resistance ECDSA cryptocurrency mixers privacy-preserving transactions Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-8555306","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":571882412,"identity":"2db66e40-7d74-44c1-8ee5-71feeaf6893a","order_by":0,"name":"Jamshed Memon","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAtUlEQVRIiWNgGAWjYBACxvbGBgiLnbmBSC09BxsYDoBYzIxEamGQSGAgUQvzzMdtjz9U3MszOMzYwMzbVkeEw2YnthscOFNcDNLCOLONjSgtbRIH2xISNwC1MHxs4yFCy8yDQC3/oFqA2onQMoMRqKUBbosBEVp6gCafOZaQOBOo5eCMcwmEtRi2H38mUVGTkNh3vPngY54yIkLMsAGJc4CRiABjkEfl/iFCyygYBaNgFIw4AABlRD6lHsfr5AAAAABJRU5ErkJggg==","orcid":"","institution":"InterNull","correspondingAuthor":true,"prefix":"","firstName":"Jamshed","middleName":"","lastName":"Memon","suffix":""}],"badges":[],"createdAt":"2026-01-08 22:53:02","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-8555306/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-8555306/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":100431909,"identity":"e0d32dbb-7468-4a76-a1d9-5c4183f96afd","added_by":"auto","created_at":"2026-01-16 14:59:31","extension":"pdf","order_by":0,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":267802,"visible":true,"origin":"","legend":"","description":"","filename":"InterNullAchievingCrossChainTransactionPrivacyThroughECDSAOneTimeSignatures.pdf","url":"https://assets-eu.researchsquare.com/files/rs-8555306/v1/3aa2001d3b4fe699e06e5c40.pdf"},{"id":100431908,"identity":"885ce685-5b09-44f0-928c-3ca5dea33c7e","added_by":"auto","created_at":"2026-01-16 14:59:31","extension":"json","order_by":1,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":4169,"visible":true,"origin":"","legend":"","description":"","filename":"5c2b9ae8686c4fd893ab689f9bb37e4a.json","url":"https://assets-eu.researchsquare.com/files/rs-8555306/v1/673291d5fb7e0e71638e4246.json"},{"id":100476359,"identity":"9e52a6cc-35fb-44a7-930e-4a1cac0671d6","added_by":"auto","created_at":"2026-01-17 11:54:12","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":363829,"visible":true,"origin":"","legend":"","description":"","filename":"InterNullAchievingCrossChainTransactionPrivacyThroughECDSAOneTimeSignatures.pdf","url":"https://assets-eu.researchsquare.com/files/rs-8555306/v1_covered_5dbada1c-6309-45e4-9edb-87d61b31d4fe.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"InterNull: Achieving Cross-Chain Transaction Privacy Through ECDSA One-Time Signatures","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"blockchain privacy, one-time signatures, cross-chain protocols, distributed key generation, quantum resistance, ECDSA, cryptocurrency mixers, privacy-preserving transactions","lastPublishedDoi":"10.21203/rs.3.rs-8555306/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-8555306/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eWe present InterNull, a blockchain privacy protocol that achieves transaction unlinkability through Elliptic Curve Digital Signature Algorithm (ECDSA) one-time signatures (OTS). 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