Fairness Verification API for Game Probability Items
Launch verifiable draw workflows, audit trails, and secure randomness infrastructure for live game services.
Designed so verified draws, audit traces, hash receipts, and exportable evidence stay in one operational workflow. Supporting evidence includes a 256GB PractRand no-anomaly window, a Dieharder excerpt with 113 of 114 passes and 0 FAIL, a 2,000-sequence NIST STS batch, and BigCrush logs across core subtests.
Validation Results
PractRand
PractRand stream validation ran to 256GB and reported no anomalies across 915 checkpoints in the captured output.
ENT
ENT recorded 8.000000 bits per byte, arithmetic mean 127.5001, and serial correlation 0.000015, indicating a stable entropy profile in the captured sample.
Dieharder
The captured Dieharder excerpt recorded 113 PASSED assessments, 1 WEAK boundary result, and 0 FAIL.
NIST STS
The NIST SP 800-22 summary batch covers 2,000 sequences, with Frequency, BlockFrequency, Runs, Rank, FFT, and Serial suites recorded within expected operating ranges.
TestU01 BigCrush
Captured TestU01 BigCrush logs include SerialOver, CollisionOver, BirthdaySpacings, ClosePairs, SimpPoker, and CouponCollector runs.
curl -X POST https://api.rantropy.xyz/v1/verifications/draw \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"eventId": "spring-draw-001",
"poolId": "legendary-items",
"requestedAt": "2026-03-27T09:00:00Z",
"requestId": "audit-run-001"
}'Why Game Teams Choose Rantropy
Structured for teams that need fairness verification and operational evidence in live game services.
Cryptographic Security
A CSPRNG-based engine with per-call traceability reduces predictability and tampering risk in draw operations.
Statistical Validation
Internally validated against a 256GB PractRand stream, a Dieharder excerpt with 113/114 passes, an NIST STS summary over 2,000 sequences, and TestU01 plus ENT logs.
Scalable APIs
REST and gRPC interfaces support integration patterns for game servers, batch jobs, and operator tooling.
Statistical Distributions
Supports uniform draw workflows and extension points for service-specific distribution logic.
High Availability
Designed for AWS-based production rollout with logging, monitoring, backup, and controlled operational hardening.
Developer Friendly
Documentation, sample requests, and audit report formats reduce integration effort for game teams.
Operational Verification Layer for Live Game Services
Built for studios that need auditable draw operations, evidence logs, and regulator-ready reporting.
What Is Already Structured
- βCSPRNG-based draw generation with per-request traceability and event identifiers
- βHash receipts, audit logs, and report outputs generated from the same event history
- βPrivate verification flow that avoids exposing internal tables or live balancing logic
- βEvidence package structure for disputes, compliance reviews, and operator explanations
What Teams Can Operate With It
Enterprise Deployment Readiness
Prepared for the step from technical validation to customer-facing pilot and controlled production rollout.