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 "@type": "DefinedTerm",
 "@id": "https://wulfkaal.github.io/entities/sybil-defense",
 "identifier": "kaal:entity:sybil-defense",
 "name": "Sybil defense",
 "termCode": "sybil-defense",
 "inDefinedTermSet": {
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 "author": {
  "@type": "Person",
  "name": "Wulf A. Kaal",
  "identifier": "https://orcid.org/0000-0003-0757-275X"
 },
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  {
   "@type": "Claim",
   "@id": "https://wulfkaal.github.io/claims/5225296-031",
   "identifier": "kaal:claim:5225296-031",
   "text": "Weighted voting defeats Sybil attacks because ECDSA signatures and zk-SNARKs authenticate every platform action, so reputation cannot be artificially inflated by identities that lack genuine contribution.",
   "abstract": "This approach utilizes cryptographic verification—via ECDSA signatures and zk-SNARKs—to authenticate actions, ensuring that reputation cannot be artificially inflated by Sybil identities lacking genuine effort",
   "citation": "Wulf A. Kaal, Cryptographic Foundations and Interdisciplinary Dimensions of the Secure Proof of Stake (SPoS) Conse (2025). SSRN: https://ssrn.com/abstract=5225296",
   "datePublished": "2025",
   "claim_type": "mechanism",
   "confidence": "argued",
   "is_failure_mode": false,
   "scope_conditions": [
    "requires that all platform actions be cryptographically authenticated and reputation be recorded on chain"
   ],
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   "status": "current"
  },
  {
   "@type": "Claim",
   "@id": "https://wulfkaal.github.io/claims/5225296-032",
   "identifier": "kaal:claim:5225296-032",
   "text": "Weighted voting creates a Nash equilibrium favoring honest participation, because creating additional Sybil identities yields no extra voting power absent corresponding contributions.",
   "abstract": "Game-theoretic analysis indicates that this creates a Nash equilibrium where honest participation is incentivized, as creating Sybil identities yields no additional voting power without corresponding contributions",
   "citation": "Wulf A. Kaal, Cryptographic Foundations and Interdisciplinary Dimensions of the Secure Proof of Stake (SPoS) Conse (2025). SSRN: https://ssrn.com/abstract=5225296",
   "datePublished": "2025",
   "claim_type": "mechanism",
   "confidence": "argued",
   "is_failure_mode": false,
   "scope_conditions": [
    "constrained by cryptographic and temporal verification mechanisms"
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   "@type": "Claim",
   "@id": "https://wulfkaal.github.io/claims/5225296-033",
   "identifier": "kaal:claim:5225296-033",
   "text": "Weighted voting reduces Sybil attack success rates by over eighty-five percent, but only where reputation is openly auditable.",
   "abstract": "Simulations of reputation-based systems suggest that weighted voting reduces Sybil attack success rates by over 85% when reputation is openly auditable",
   "citation": "Wulf A. Kaal, Cryptographic Foundations and Interdisciplinary Dimensions of the Secure Proof of Stake (SPoS) Conse (2025). SSRN: https://ssrn.com/abstract=5225296",
   "datePublished": "2025",
   "claim_type": "empirical",
   "confidence": "evidenced",
   "is_failure_mode": false,
   "scope_conditions": [
    "reputation must be openly auditable"
   ],
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   "@type": "Claim",
   "@id": "https://wulfkaal.github.io/claims/5225296-035",
   "identifier": "kaal:claim:5225296-035",
   "text": "Microsecond-scale reputation updates defeat Sybil attacks by imposing an operational burden that makes maintaining multiple coherent identities across microsecond intervals computationally infeasible.",
   "abstract": "This temporal granularity imposes a significant operational burden on attackers, rendering it computationally infeasible to maintain multiple coherent identities across microsecond intervals",
   "citation": "Wulf A. Kaal, Cryptographic Foundations and Interdisciplinary Dimensions of the Secure Proof of Stake (SPoS) Conse (2025). SSRN: https://ssrn.com/abstract=5225296",
   "datePublished": "2025",
   "claim_type": "mechanism",
   "confidence": "argued",
   "is_failure_mode": false,
   "scope_conditions": [
    "requires real-time behavioral signals such as block proposal frequency, vote consistency, and network latency"
   ],
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  },
  {
   "@type": "Claim",
   "@id": "https://wulfkaal.github.io/claims/5225296-036",
   "identifier": "kaal:claim:5225296-036",
   "text": "Sub-millisecond reputation refresh rates reduce successful Sybil attack probability by seventy percent in simulation.",
   "abstract": "Simulations demonstrate a 70% reduction in successful Sybil attack probability with sub-millisecond refresh rates, leveraging the rapid interaction pace of modern blockchain networks",
   "citation": "Wulf A. Kaal, Cryptographic Foundations and Interdisciplinary Dimensions of the Secure Proof of Stake (SPoS) Conse (2025). SSRN: https://ssrn.com/abstract=5225296",
   "datePublished": "2025",
   "claim_type": "empirical",
   "confidence": "evidenced",
   "is_failure_mode": false,
   "scope_conditions": [
    "sub-millisecond refresh rates"
   ],
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   "status": "current"
  }
 ],
 "description": "5 claims in the published works of Wulf A. Kaal carry the concept tag 'sybil-defense'. Derived node: a roster, not an adjudicated definition."
}