{
 "@context": "https://schema.org",
 "@type": "DefinedTerm",
 "@id": "https://wulfkaal.github.io/entities/validator-expertise",
 "identifier": "kaal:entity:validator-expertise",
 "name": "Validator expertise",
 "termCode": "validator-expertise",
 "inDefinedTermSet": {
  "@id": "https://wulfkaal.github.io/entities/index.json"
 },
 "author": {
  "@type": "Person",
  "name": "Wulf A. Kaal",
  "identifier": "https://orcid.org/0000-0003-0757-275X"
 },
 "dateModified": "2026-07-29",
 "canonicalForm": "https://wulfkaal.github.io/entities/validator-expertise.md",
 "sha256": "653b12d1748dea022ea3c7ec010131d6fbb6228dec078ef938c84fe33fc9ec76",
 "additionalProperty": [
  {
   "@type": "PropertyValue",
   "name": "status",
   "value": "derived"
  },
  {
   "@type": "PropertyValue",
   "name": "claim_count",
   "value": 2
  },
  {
   "@type": "PropertyValue",
   "name": "work_count",
   "value": 1
  },
  {
   "@type": "PropertyValue",
   "name": "year_span",
   "value": [
    "2021",
    "2021"
   ]
  },
  {
   "@type": "PropertyValue",
   "name": "non_current_claims",
   "value": 0
  }
 ],
 "subjectOf": [
  {
   "@type": "Claim",
   "@id": "https://wulfkaal.github.io/claims/3931933-017",
   "identifier": "kaal:claim:3931933-017",
   "text": "Lack of validator expertise degraded the initial Casper testnet, with only around 85 percent of testnet nodes up to date and roughly 140 active machines contributing nothing to the network.",
   "abstract": "Lack of expertise also afflicted the initial Casper testnet. Only around 85% of the testnet nodes were up-to-date, with the rest of the active machines (around 140 machines at the time) not contributing to the network at all. Judging by the discussion and questions in the telegram channel,",
   "citation": "Wulf A. Kaal, Hybrid Secure Proof of Stake (2021). SSRN: https://ssrn.com/abstract=3931933",
   "datePublished": "2021",
   "claim_type": "failure",
   "confidence": "evidenced",
   "is_failure_mode": true,
   "scope_conditions": [
    "initial Casper testnet"
   ],
   "source_pdf_sha256": "55a71cdfceb96fadefba1f2fed9563b588825378c91aff644ee7faaccdf31204",
   "status": "current"
  },
  {
   "@type": "Claim",
   "@id": "https://wulfkaal.github.io/claims/3931933-018",
   "identifier": "kaal:claim:3931933-018",
   "text": "Reward focused participation crowds out technical engagement: many Casper testnet participants lacked the expertise to run nodes, and their questions concentrated on reward payments with little to no focus on technical topics.",
   "abstract": "Judging by the discussion and questions in the telegram channel, many testnet participants also did not have the required expertise to run Casper testnet nodes. Questions primarily focused on reward payments, with little to no focus on the technical topics.",
   "citation": "Wulf A. Kaal, Hybrid Secure Proof of Stake (2021). SSRN: https://ssrn.com/abstract=3931933",
   "datePublished": "2021",
   "claim_type": "failure",
   "confidence": "argued",
   "is_failure_mode": true,
   "scope_conditions": [
    "initial Casper testnet telegram channel discussions"
   ],
   "source_pdf_sha256": "55a71cdfceb96fadefba1f2fed9563b588825378c91aff644ee7faaccdf31204",
   "status": "current"
  }
 ],
 "description": "2 claims in the published works of Wulf A. Kaal carry the concept tag 'validator-expertise'. Derived node: a roster, not an adjudicated definition."
}