Source Code

;; ZeroTrace Identity Protocol
;; A privacy-first decentralized identity system enabling anonymous verification,
;; reputation management, and group participation through zero-knowledge proofs
;; and cryptographic commitments while maintaining complete user anonymity.

;; ERROR CODES & VALIDATION CONSTANTS

(define-constant contract-deployer tx-sender)
(define-constant ERR-UNAUTHORIZED-ACCESS (err u100))
(define-constant ERR-IDENTITY-ALREADY-EXISTS (err u101))
(define-constant ERR-IDENTITY-NOT-FOUND (err u102))
(define-constant ERR-INVALID-CRYPTOGRAPHIC-COMMITMENT (err u103))
(define-constant ERR-VERIFICATION-PROCESS-FAILED (err u104))
(define-constant ERR-INSUFFICIENT-REPUTATION-SCORE (err u105))
(define-constant ERR-INVALID-ZERO-KNOWLEDGE-PROOF (err u106))
(define-constant ERR-COMMITMENT-EXPIRED (err u107))
(define-constant ERR-ALREADY-VERIFIED-IDENTITY (err u108))
(define-constant ERR-INVALID-INPUT-PARAMETERS (err u109))
(define-constant ERR-REPUTATION-SYSTEM-LOCKED (err u110))
(define-constant ERR-GROUP-ACCESS-DENIED (err u111))

;; System Configuration Constants
(define-constant minimum-reputation-threshold u10)
(define-constant maximum-reputation-ceiling u1000)
(define-constant verification-challenge-timeout u144) ;; ~24 hours in blocks
(define-constant commitment-expiration-period u1008) ;; ~1 week in blocks
(define-constant initial-reputation-grant u100)
(define-constant maximum-interaction-types u10)
(define-constant maximum-challenge-types u5)
(define-constant maximum-proof-types u10)

;; ===========================================
;; CORE DATA STRUCTURES
;; ===========================================

;; Primary anonymous identity registry
(define-map anonymous-identity-registry
  { identity-cryptographic-hash: (buff 32) }
  {
    privacy-commitment: (buff 32),
    current-reputation-score: uint,
    verification-trust-level: uint,
    identity-creation-timestamp: uint,
    most-recent-activity-timestamp: uint,
    identity-active-status: bool,
    encrypted-metadata-hash: (optional (buff 32)),
  }
)

;; Private ownership mapping (hidden from public queries)
(define-map identity-ownership-registry
  { account-principal: principal }
  {
    owned-identity-hash: (buff 32),
    ownership-establishment-timestamp: uint,
  }
)

;; Verification challenge management system
(define-map verification-challenge-registry
  { unique-challenge-identifier: (buff 32) }
  {
    target-identity-hash: (buff 32),
    challenge-initiator-principal: principal,
    verification-challenge-category: uint,
    challenge-cryptographic-commitment: (buff 32),
    challenge-creation-timestamp: uint,
    challenge-resolution-status: bool,
    verification-outcome: (optional bool),
  }
)

;; Reputation interaction tracking system
(define-map reputation-interaction-ledger
  { interaction-unique-identifier: (buff 32) }
  {
    source-identity-hash: (buff 32),
    target-identity-hash: (buff 32),
    interaction-classification: uint,
    reputation-score-adjustment: int,
    interaction-block-timestamp: uint,
    cryptographic-proof-hash: (buff 32),
  }
)

;; Zero-knowledge proof storage system
(define-map zero-knowledge-proof-vault
  { proof-unique-identifier: (buff 32) }
  {
    proof-owner-identity-hash: (buff 32),
    proof-classification-type: uint,
    cryptographic-proof-payload: (buff 512),
    proof-verification-status: bool,
    proof-submission-timestamp: uint,
  }
)

;; Anonymous group management system
(define-map decentralized-group-registry
  { group-unique-identifier: (buff 32) }
  {
    human-readable-group-name: (string-ascii 64),
    required-minimum-reputation: uint,
    current-active-member-count: uint,
    group-creation-timestamp: uint,
    group-operational-status: bool,
  }
)

;; Anonymous group membership tracking
(define-map anonymous-membership-registry
  { membership-unique-identifier: (buff 32) }
  {
    associated-group-identifier: (buff 32),
    member-privacy-commitment: (buff 32),
    membership-establishment-timestamp: uint,
    membership-active-status: bool,
  }
)

;; SYSTEM STATE VARIABLES

(define-data-var total-registered-identities uint u0)
(define-data-var completed-verification-count uint u0)
(define-data-var global-reputation-pool uint u10000)
(define-data-var minimum-verification-reputation-requirement uint u50)
(define-data-var protocol-emergency-pause-status bool false)

;; PRIVATE UTILITY FUNCTIONS

;; Generate cryptographically secure deterministic hash for 32-byte inputs
(define-private (create-deterministic-hash
    (primary-input (buff 32))
    (secondary-input (buff 32))
    (numeric-salt uint)
  )
  (keccak256 (concat (concat primary-input secondary-input)
    (unwrap-panic (to-consensus-buff? numeric-salt))
  ))
)

;; Generate hash for large proof payloads
(define-private (create-proof-deterministic-hash
    (identity-hash (buff 32))
    (proof-payload (buff 512))
    (numeric-salt uint)
  )
  (keccak256 (concat (concat identity-hash (keccak256 proof-payload))
    (unwrap-panic (to-consensus-buff? numeric-salt))
  ))
)

;; Validate cryptographic commitment integrity
(define-private (validate-commitment-format (commitment-data (buff 32)))
  (> (len commitment-data) u0)
)

;; Check identity existence in registry
(define-private (check-identity-registration-status (identity-hash (buff 32)))
  (is-some (map-get? anonymous-identity-registry { identity-cryptographic-hash: identity-hash }))
)

;; Retrieve current blockchain height
(define-private (get-current-blockchain-height)
  stacks-block-height
)

;; Validate reputation adjustment parameters
(define-private (validate-reputation-delta-range (reputation-adjustment int))
  (and (>= reputation-adjustment -100) (<= reputation-adjustment 100))
)

;; Calculate adjusted reputation score with bounds checking
(define-private (compute-updated-reputation-score
    (current-score uint)
    (score-adjustment int)
  )
  (let ((calculated-new-score (if (< score-adjustment 0)
      (if (>= current-score (to-uint (- 0 score-adjustment)))
        (- current-score (to-uint (- 0 score-adjustment)))
        u0
      )
      (+ current-score (to-uint score-adjustment))
    )))
    (if (> calculated-new-score maximum-reputation-ceiling)
      maximum-reputation-ceiling
      calculated-new-score
    )
  )
)

;; Validate zero-knowledge proof structure
(define-private (validate-zero-knowledge-proof-structure (proof-payload (buff 512)))
  (and
    (> (len proof-payload) u0)
    (<= (len proof-payload) u512)
  )
)

;; Validate identity hash format
(define-private (validate-identity-hash (identity-hash (buff 32)))
  (is-eq (len identity-hash) u32)
)

;; Validate challenge identifier format
(define-private (validate-challenge-identifier (challenge-id (buff 32)))
  (is-eq (len challenge-id) u32)
)

;; Validate group identifier format
(define-private (validate-group-identifier (group-id (buff 32)))
  (is-eq (len group-id) u32)
)

;; Validate cryptographic proof hash
(define-private (validate-proof-hash (proof-hash (buff 32)))
  (is-eq (len proof-hash) u32)
)

;; Validate optional metadata hash
(define-private (validate-optional-metadata (metadata-hash (optional (buff 32))))
  (match metadata-hash
    metadata (is-eq (len metadata) u32)
    true
  )
)

;; PUBLIC READ-ONLY QUERY FUNCTIONS

;; Retrieve anonymous identity information
(define-read-only (get-anonymous-identity-details (identity-hash (buff 32)))
  (map-get? anonymous-identity-registry { identity-cryptographic-hash: identity-hash })
)

;; Query identity reputation score
(define-read-only (query-identity-reputation-score (identity-hash (buff 32)))
  (match (map-get? anonymous-identity-registry { identity-cryptographic-hash: identity-hash })
    identity-record (ok (get current-reputation-score identity-record))
    ERR-IDENTITY-NOT-FOUND
  )
)

;; Check identity verification status
(define-read-only (check-identity-verification-status (identity-hash (buff 32)))
  (match (map-get? anonymous-identity-registry { identity-cryptographic-hash: identity-hash })
    identity-record (ok (>= (get verification-trust-level identity-record) u1))
    ERR-IDENTITY-NOT-FOUND
  )
)

;; Retrieve verification challenge details
(define-read-only (get-verification-challenge-details (challenge-identifier (buff 32)))
  (map-get? verification-challenge-registry { unique-challenge-identifier: challenge-identifier })
)

;; Query anonymous group information
(define-read-only (get-decentralized-group-information (group-identifier (buff 32)))
  (map-get? decentralized-group-registry { group-unique-identifier: group-identifier })
)

;; Get comprehensive system metrics
(define-read-only (get-protocol-system-statistics)
  {
    total-registered-identities: (var-get total-registered-identities),
    completed-verification-count: (var-get completed-verification-count),
    global-reputation-pool: (var-get global-reputation-pool),
    minimum-verification-reputation-requirement: (var-get minimum-verification-reputation-requirement),
    protocol-emergency-pause-status: (var-get protocol-emergency-pause-status),
  }
)

;; Validate proof format compliance
(define-read-only (verify-proof-format-compliance (proof-data (buff 512)))
  (validate-zero-knowledge-proof-structure proof-data)
)

;; IDENTITY LIFECYCLE MANAGEMENT

;; Establish new anonymous identity
(define-public (establish-anonymous-identity
    (privacy-commitment (buff 32))
    (optional-metadata-hash (optional (buff 32)))
  )
  (let (
      (generated-identity-hash (keccak256 (concat privacy-commitment
        (unwrap-panic (to-consensus-buff? stacks-block-height))
      )))
      (current-blockchain-height (get-current-blockchain-height))
    )
    (asserts! (not (var-get protocol-emergency-pause-status))
      ERR-UNAUTHORIZED-ACCESS
    )
    (asserts! (validate-commitment-format privacy-commitment)
      ERR-INVALID-CRYPTOGRAPHIC-COMMITMENT
    )
    (asserts! (not (check-identity-registration-status generated-identity-hash))
      ERR-IDENTITY-ALREADY-EXISTS
    )
    (asserts!
      (is-none (map-get? identity-ownership-registry { account-principal: tx-sender }))
      ERR-IDENTITY-ALREADY-EXISTS
    )
    ;; Validate optional metadata hash if provided
    (asserts! (validate-optional-metadata optional-metadata-hash)
      ERR-INVALID-INPUT-PARAMETERS
    )

    ;; Register new anonymous identity
    (map-set anonymous-identity-registry { identity-cryptographic-hash: generated-identity-hash } {
      privacy-commitment: privacy-commitment,
      current-reputation-score: initial-reputation-grant,
      verification-trust-level: u0,
      identity-creation-timestamp: current-blockchain-height,
      most-recent-activity-timestamp: current-blockchain-height,
      identity-active-status: true,
      encrypted-metadata-hash: optional-metadata-hash,
    })

    ;; Establish private ownership mapping
    (map-set identity-ownership-registry { account-principal: tx-sender } {
      owned-identity-hash: generated-identity-hash,
      ownership-establishment-timestamp: current-blockchain-height,
    })

    ;; Update system-wide statistics
    (var-set total-registered-identities
      (+ (var-get total-registered-identities) u1)
    )

    (ok generated-identity-hash)
  )
)

;; Update identity activity timestamp
(define-public (refresh-identity-activity-status)
  (let (
      (ownership-record (unwrap!
        (map-get? identity-ownership-registry { account-principal: tx-sender })
        ERR-IDENTITY-NOT-FOUND
      ))
      (owned-identity-hash (get owned-identity-hash ownership-record))
      (identity-record (unwrap!
        (map-get? anonymous-identity-registry { identity-cryptographic-hash: owned-identity-hash })
        ERR-IDENTITY-NOT-FOUND
      ))
    )
    (asserts! (not (var-get protocol-emergency-pause-status))
      ERR-UNAUTHORIZED-ACCESS
    )
    (asserts! (get identity-active-status identity-record) ERR-IDENTITY-NOT-FOUND)

    ;; Update most recent activity timestamp
    (map-set anonymous-identity-registry { identity-cryptographic-hash: owned-identity-hash }
      (merge identity-record { most-recent-activity-timestamp: (get-current-blockchain-height) })
    )

    (ok true)
  )
)

;; Deactivate anonymous identity
(define-public (deactivate-owned-identity)
  (let (
      (ownership-record (unwrap!
        (map-get? identity-ownership-registry { account-principal: tx-sender })
        ERR-IDENTITY-NOT-FOUND
      ))
      (owned-identity-hash (get owned-identity-hash ownership-record))
      (identity-record (unwrap!
        (map-get? anonymous-identity-registry { identity-cryptographic-hash: owned-identity-hash })
        ERR-IDENTITY-NOT-FOUND
      ))
    )
    (asserts! (not (var-get protocol-emergency-pause-status))
      ERR-UNAUTHORIZED-ACCESS
    )
    (asserts! (get identity-active-status identity-record) ERR-IDENTITY-NOT-FOUND)

    ;; Set identity status to inactive
    (map-set anonymous-identity-registry { identity-cryptographic-hash: owned-identity-hash }
      (merge identity-record { identity-active-status: false })
    )

    (ok true)
  )
)

;; CRYPTOGRAPHIC VERIFICATION SYSTEM

;; Initiate verification challenge process
(define-public (initiate-identity-verification-challenge
    (target-identity-hash (buff 32))
    (challenge-category uint)
    (challenge-commitment (buff 32))
  )
  (let (
      (unique-challenge-id (create-deterministic-hash target-identity-hash challenge-commitment
        (get-current-blockchain-height)
      ))
      (current-blockchain-height (get-current-blockchain-height))
    )
    (asserts! (not (var-get protocol-emergency-pause-status))
      ERR-UNAUTHORIZED-ACCESS
    )
    (asserts! (validate-identity-hash target-identity-hash)
      ERR-INVALID-INPUT-PARAMETERS
    )
    (asserts! (check-identity-registration-status target-identity-hash)
      ERR-IDENTITY-NOT-FOUND
    )
    (asserts! (validate-commitment-format challenge-commitment)
      ERR-INVALID-CRYPTOGRAPHIC-COMMITMENT
    )
    (asserts! (<= challenge-category maximum-challenge-types)
      ERR-INVALID-INPUT-PARAMETERS
    )

    ;; Create verification challenge record
    (map-set verification-challenge-registry { unique-challenge-identifier: unique-challenge-id } {
      target-identity-hash: target-identity-hash,
      challenge-initiator-principal: tx-sender,
      verification-challenge-category: challenge-category,
      challenge-cryptographic-commitment: challenge-commitment,
      challenge-creation-timestamp: current-blockchain-height,
      challenge-resolution-status: false,
      verification-outcome: none,
    })

    (ok unique-challenge-id)
  )
)

;; Process verification challenge response
(define-public (process-verification-challenge-response
    (challenge-identifier (buff 32))
    (cryptographic-response-proof (buff 512))
  )
  (let (
      ;; Validate challenge identifier format
      (valid-challenge (asserts! (validate-challenge-identifier challenge-identifier)
        ERR-INVALID-INPUT-PARAMETERS
      ))
      (challenge-record (unwrap!
        (map-get? verification-challenge-registry { unique-challenge-identifier: challenge-identifier })
        ERR-IDENTITY-NOT-FOUND
      ))
      (target-identity-hash (get target-identity-hash challenge-record))
      (ownership-record (unwrap!
        (map-get? identity-ownership-registry { account-principal: tx-sender })
        ERR-IDENTITY-NOT-FOUND
      ))
      (current-blockchain-height (get-current-blockchain-height))
    )
    (asserts! (not (var-get protocol-emergency-pause-status))
      ERR-UNAUTHORIZED-ACCESS
    )
    (asserts!
      (is-eq target-identity-hash (get owned-identity-hash ownership-record))
      ERR-UNAUTHORIZED-ACCESS
    )
    (asserts! (not (get challenge-resolution-status challenge-record))
      ERR-ALREADY-VERIFIED-IDENTITY
    )
    (asserts!
      (<
        (- current-blockchain-height
          (get challenge-creation-timestamp challenge-record)
        )
        verification-challenge-timeout
      )
      ERR-COMMITMENT-EXPIRED
    )
    (asserts!
      (validate-zero-knowledge-proof-structure cryptographic-response-proof)
      ERR-INVALID-ZERO-KNOWLEDGE-PROOF
    )

    ;; Mark challenge as successfully resolved
    (map-set verification-challenge-registry { unique-challenge-identifier: challenge-identifier }
      (merge challenge-record {
        challenge-resolution-status: true,
        verification-outcome: (some true),
      })
    )

    ;; Increase verification trust level
    (try! (elevate-identity-verification-level target-identity-hash))

    ;; Update global verification statistics
    (var-set completed-verification-count
      (+ (var-get completed-verification-count) u1)
    )

    (ok true)
  )
)

;; Elevate identity verification level (admin function)
(define-public (elevate-identity-verification-level (identity-hash (buff 32)))
  (let (
      ;; Validate identity hash format
      (valid-identity (asserts! (validate-identity-hash identity-hash)
        ERR-INVALID-INPUT-PARAMETERS
      ))
      (identity-record (unwrap!
        (map-get? anonymous-identity-registry { identity-cryptographic-hash: identity-hash })
        ERR-IDENTITY-NOT-FOUND
      ))
      (elevated-verification-level (+ (get verification-trust-level identity-record) u1))
    )
    (asserts! (is-eq tx-sender contract-deployer) ERR-UNAUTHORIZED-ACCESS)

    (map-set anonymous-identity-registry { identity-cryptographic-hash: identity-hash }
      (merge identity-record { verification-trust-level: elevated-verification-level })
    )

    (ok elevated-verification-level)
  )
)

;; DECENTRALIZED REPUTATION SYSTEM

;; Record reputation interaction between identities
(define-public (record-reputation-interaction
    (recipient-identity-hash (buff 32))
    (interaction-classification uint)
    (reputation-score-adjustment int)
    (cryptographic-proof-hash (buff 32))
  )
  (let (
      ;; Validate input parameters
      (valid-recipient (asserts! (validate-identity-hash recipient-identity-hash)
        ERR-INVALID-INPUT-PARAMETERS
      ))
      (valid-proof-hash (asserts! (validate-proof-hash cryptographic-proof-hash)
        ERR-INVALID-INPUT-PARAMETERS
      ))
      (sender-ownership-record (unwrap!
        (map-get? identity-ownership-registry { account-principal: tx-sender })
        ERR-IDENTITY-NOT-FOUND
      ))
      (sender-identity-hash (get owned-identity-hash sender-ownership-record))
      (sender-identity-record (unwrap!
        (map-get? anonymous-identity-registry { identity-cryptographic-hash: sender-identity-hash })
        ERR-IDENTITY-NOT-FOUND
      ))
      (recipient-identity-record (unwrap!
        (map-get? anonymous-identity-registry { identity-cryptographic-hash: recipient-identity-hash })
        ERR-IDENTITY-NOT-FOUND
      ))
      (unique-interaction-id (create-deterministic-hash sender-identity-hash recipient-identity-hash
        (get-current-blockchain-height)
      ))
      (current-blockchain-height (get-current-blockchain-height))
    )
    (asserts! (not (var-get protocol-emergency-pause-status))
      ERR-UNAUTHORIZED-ACCESS
    )
    (asserts! (get identity-active-status sender-identity-record)
      ERR-IDENTITY-NOT-FOUND
    )
    (asserts! (get identity-active-status recipient-identity-record)
      ERR-IDENTITY-NOT-FOUND
    )
    (asserts!
      (>= (get current-reputation-score sender-identity-record)
        minimum-reputation-threshold
      )
      ERR-INSUFFICIENT-REPUTATION-SCORE
    )
    (asserts! (validate-reputation-delta-range reputation-score-adjustment)
      ERR-INVALID-INPUT-PARAMETERS
    )
    (asserts! (<= interaction-classification maximum-interaction-types)
      ERR-INVALID-INPUT-PARAMETERS
    )

    ;; Record reputation interaction in ledger
    (map-set reputation-interaction-ledger { interaction-unique-identifier: unique-interaction-id } {
      source-identity-hash: sender-identity-hash,
      target-identity-hash: recipient-identity-hash,
      interaction-classification: interaction-classification,
      reputation-score-adjustment: reputation-score-adjustment,
      interaction-block-timestamp: current-blockchain-height,
      cryptographic-proof-hash: cryptographic-proof-hash,
    })

    ;; Apply reputation adjustment to recipient
    (let ((updated-reputation-score (compute-updated-reputation-score
        (get current-reputation-score recipient-identity-record)
        reputation-score-adjustment
      )))
      (map-set anonymous-identity-registry { identity-cryptographic-hash: recipient-identity-hash }
        (merge recipient-identity-record {
          current-reputation-score: updated-reputation-score,
          most-recent-activity-timestamp: current-blockchain-height,
        })
      )
    )

    (ok unique-interaction-id)
  )
)

;; ANONYMOUS GROUP MANAGEMENT SYSTEM

;; Establish new anonymous group
(define-public (establish-decentralized-anonymous-group
    (human-readable-name (string-ascii 64))
    (required-reputation-threshold uint)
  )
  (let (
      (generated-group-id (keccak256 (unwrap-panic (to-consensus-buff? human-readable-name))))
      (current-blockchain-height (get-current-blockchain-height))
    )
    (asserts! (not (var-get protocol-emergency-pause-status))
      ERR-UNAUTHORIZED-ACCESS
    )
    (asserts! (> (len human-readable-name) u0) ERR-INVALID-INPUT-PARAMETERS)
    (asserts! (<= required-reputation-threshold maximum-reputation-ceiling)
      ERR-INVALID-INPUT-PARAMETERS
    )
    (asserts!
      (is-none (map-get? decentralized-group-registry { group-unique-identifier: generated-group-id }))
      ERR-IDENTITY-ALREADY-EXISTS
    )

    (map-set decentralized-group-registry { group-unique-identifier: generated-group-id } {
      human-readable-group-name: human-readable-name,
      required-minimum-reputation: required-reputation-threshold,
      current-active-member-count: u0,
      group-creation-timestamp: current-blockchain-height,
      group-operational-status: true,
    })

    (ok generated-group-id)
  )
)

;; Join anonymous group with privacy commitment
(define-public (join-anonymous-group-with-commitment
    (target-group-identifier (buff 32))
    (privacy-membership-commitment (buff 32))
  )
  (let (
      ;; Validate group identifier format
      (valid-group-id (asserts! (validate-group-identifier target-group-identifier)
        ERR-INVALID-INPUT-PARAMETERS
      ))
      (ownership-record (unwrap!
        (map-get? identity-ownership-registry { account-principal: tx-sender })
        ERR-IDENTITY-NOT-FOUND
      ))
      (owned-identity-hash (get owned-identity-hash ownership-record))
      (identity-record (unwrap!
        (map-get? anonymous-identity-registry { identity-cryptographic-hash: owned-identity-hash })
        ERR-IDENTITY-NOT-FOUND
      ))
      (group-record (unwrap!
        (map-get? decentralized-group-registry { group-unique-identifier: target-group-identifier })
        ERR-IDENTITY-NOT-FOUND
      ))
      (unique-membership-id (create-deterministic-hash target-group-identifier
        privacy-membership-commitment (get-current-blockchain-height)
      ))
      (current-blockchain-height (get-current-blockchain-height))
    )
    (asserts! (not (var-get protocol-emergency-pause-status))
      ERR-UNAUTHORIZED-ACCESS
    )
    (asserts! (get group-operational-status group-record) ERR-GROUP-ACCESS-DENIED)
    (asserts! (get identity-active-status identity-record) ERR-IDENTITY-NOT-FOUND)
    (asserts!
      (>= (get current-reputation-score identity-record)
        (get required-minimum-reputation group-record)
      )
      ERR-INSUFFICIENT-REPUTATION-SCORE
    )
    (asserts! (validate-commitment-format privacy-membership-commitment)
      ERR-INVALID-CRYPTOGRAPHIC-COMMITMENT
    )

    ;; Create anonymous membership record
    (map-set anonymous-membership-registry { membership-unique-identifier: unique-membership-id } {
      associated-group-identifier: target-group-identifier,
      member-privacy-commitment: privacy-membership-commitment,
      membership-establishment-timestamp: current-blockchain-height,
      membership-active-status: true,
    })

    ;; Increment group member count
    (map-set decentralized-group-registry { group-unique-identifier: target-group-identifier }
      (merge group-record { current-active-member-count: (+ (get current-active-member-count group-record) u1) })
    )

    (ok unique-membership-id)
  )
)

;; ZERO-KNOWLEDGE PROOF INFRASTRUCTURE

;; Submit zero-knowledge proof for verification
(define-public (submit-zero-knowledge-cryptographic-proof
    (proof-classification-type uint)
    (cryptographic-proof-payload (buff 512))
  )
  (let (
      (ownership-record (unwrap!
        (map-get? identity-ownership-registry { account-principal: tx-sender })
        ERR-IDENTITY-NOT-FOUND
      ))
      (owned-identity-hash (get owned-identity-hash ownership-record))
      (unique-proof-id (create-proof-deterministic-hash owned-identity-hash
        cryptographic-proof-payload (get-current-blockchain-height)
      ))
      (current-blockchain-height (get-current-blockchain-height))
    )
    (asserts! (not (var-get protocol-emergency-pause-status))
      ERR-UNAUTHORIZED-ACCESS
    )
    (asserts!
      (validate-zero-knowledge-proof-structure cryptographic-proof-payload)
      ERR-INVALID-ZERO-KNOWLEDGE-PROOF
    )
    (asserts! (<= proof-classification-type maximum-proof-types)
      ERR-INVALID-INPUT-PARAMETERS
    )

    (map-set zero-knowledge-proof-vault { proof-unique-identifier: unique-proof-id } {
      proof-owner-identity-hash: owned-identity-hash,
      proof-classification-type: proof-classification-type,
      cryptographic-proof-payload: cryptographic-proof-payload,
      proof-verification-status: false, ;; External verification required
      proof-submission-timestamp: current-blockchain-height,
    })

    (ok unique-proof-id)
  )
)

;; ADMINISTRATIVE PROTOCOL FUNCTIONS

;; Toggle protocol emergency pause status
(define-public (toggle-protocol-emergency-pause-status (emergency-pause-state bool))
  (begin
    (asserts! (is-eq tx-sender contract-deployer) ERR-UNAUTHORIZED-ACCESS)
    (var-set protocol-emergency-pause-status emergency-pause-state)
    (ok emergency-pause-state)
  )
)

;; Adjust minimum verification reputation requirement
(define-public (adjust-minimum-verification-reputation-requirement (updated-minimum-requirement uint))
  (begin
    (asserts! (is-eq tx-sender contract-deployer) ERR-UNAUTHORIZED-ACCESS)
    (asserts! (<= updated-minimum-requirement maximum-reputation-ceiling)
      ERR-INVALID-INPUT-PARAMETERS
    )
    (var-set minimum-verification-reputation-requirement
      updated-minimum-requirement
    )
    (ok updated-minimum-requirement)
  )
)

;; Emergency reputation score adjustment (administrative override)
(define-public (emergency-reputation-score-adjustment
    (target-identity-hash (buff 32))
    (override-reputation-score uint)
  )
  (let (
      ;; Validate identity hash format
      (valid-identity (asserts! (validate-identity-hash target-identity-hash)
        ERR-INVALID-INPUT-PARAMETERS
      ))
      (identity-record (unwrap!
        (map-get? anonymous-identity-registry { identity-cryptographic-hash: target-identity-hash })
        ERR-IDENTITY-NOT-FOUND
      ))
    )
    (asserts! (is-eq tx-sender contract-deployer) ERR-UNAUTHORIZED-ACCESS)
    (asserts! (<= override-reputation-score maximum-reputation-ceiling)
      ERR-INVALID-INPUT-PARAMETERS
    )

    (map-set anonymous-identity-registry { identity-cryptographic-hash: target-identity-hash }
      (merge identity-record { current-reputation-score: override-reputation-score })
    )

    (ok override-reputation-score)
  )
)

Functions (32)

FunctionAccessArgs
create-deterministic-hashprivateprimary-input: (buff 32
create-proof-deterministic-hashprivateidentity-hash: (buff 32
validate-commitment-formatprivatecommitment-data: (buff 32
check-identity-registration-statusprivateidentity-hash: (buff 32
get-current-blockchain-heightprivate
validate-reputation-delta-rangeprivatereputation-adjustment: int
validate-zero-knowledge-proof-structureprivateproof-payload: (buff 512
validate-identity-hashprivateidentity-hash: (buff 32
validate-challenge-identifierprivatechallenge-id: (buff 32
validate-group-identifierprivategroup-id: (buff 32
validate-proof-hashprivateproof-hash: (buff 32
validate-optional-metadataprivatemetadata-hash: (optional (buff 32
get-anonymous-identity-detailsread-onlyidentity-hash: (buff 32
query-identity-reputation-scoreread-onlyidentity-hash: (buff 32
check-identity-verification-statusread-onlyidentity-hash: (buff 32
get-verification-challenge-detailsread-onlychallenge-identifier: (buff 32
get-decentralized-group-informationread-onlygroup-identifier: (buff 32
get-protocol-system-statisticsread-only
verify-proof-format-complianceread-onlyproof-data: (buff 512
establish-anonymous-identitypublicprivacy-commitment: (buff 32
refresh-identity-activity-statuspublic
deactivate-owned-identitypublic
initiate-identity-verification-challengepublictarget-identity-hash: (buff 32
process-verification-challenge-responsepublicchallenge-identifier: (buff 32
elevate-identity-verification-levelpublicidentity-hash: (buff 32
record-reputation-interactionpublicrecipient-identity-hash: (buff 32
establish-decentralized-anonymous-grouppublichuman-readable-name: (string-ascii 64
join-anonymous-group-with-commitmentpublictarget-group-identifier: (buff 32
submit-zero-knowledge-cryptographic-proofpublicproof-classification-type: uint, cryptographic-proof-payload: (buff 512
toggle-protocol-emergency-pause-statuspublicemergency-pause-state: bool
adjust-minimum-verification-reputation-requirementpublicupdated-minimum-requirement: uint
emergency-reputation-score-adjustmentpublictarget-identity-hash: (buff 32