ProofDraw website screenshot

ProofDraw

Provably-fair random selection REST API that seals entry lists with SHA-256 commitments bound to future drand (League of Entropy) randomness rounds, producing publicly verifiable draw receipts with client-side open-source verification. A draw is created, entries are added as opaque ticket ids, then sealed against a chosen future beacon round on the quicknet (3s) or classic (30s) chain; the canonical list file is hashed, mirrored to a public GitHub repository, and anchored with OpenTimestamps, so any entrant can re-derive the winner in their own browser from public sources alone. Serves giveaways, raffles and sweepstakes, non-profit draws, audit sample selection and task allocation, with HMAC-signed webhooks and bearer API-key authentication.

ProofDraw publishes 1 API on the APIs.io network. Tagged areas include Randomness, Provably Fair, drand, verifiable-randomness, and Cryptography.

The ProofDraw catalog on APIs.io includes 1 event-driven AsyncAPI specification.

ProofDraw’s developer surface includes documentation, API reference, support, signup flow, authentication, sandbox, and 23 more developer resources.

🌐 Visit website 📡 Source on GitHub
35.9/100 thin ▬ flat Agent 43/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
1 APIs
RandomnessProvably Fairdrandverifiable-randomnessCryptographyrafflegiveawaySweepstakesLotteryVerificationWebhookREST API

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 35.9/100 · thin
Contract Quality 15.3 / 25
Developer Ergonomics 4.2 / 20
Access Clarity 5.5 / 20
Operational Transparency 1.4 / 13
Contract Governance 2.0 / 12
Discoverability 7.6 / 10
Agent readiness — 43/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/proofdraw: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

ProofDraw API

Provably-fair random selection REST API (v1) covering draw lifecycle, account, health, and public verification artifacts. HMAC-signed webhooks. Bearer API-key auth.

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

ProofDraw API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Proofdraw Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Proofdraw Rate Limits

0 limits

RATE LIMITS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Proofdraw Webhooks

ASYNCAPI

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Proofdraw Authentication

http · 1 scheme

SECURITY

Proofdraw Domain Security

TLSv1.3 · DMARC

SECURITY

Proofdraw Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 SignUp
SignUp
 Login
Login
 Sandbox
Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 DataModel
DataModel
 Webhooks
Webhooks

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 SourceCode
SourceCode

Access & Security 4

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security

Operate 2

Status, limits, changes, and where to get help

Support
Support
 RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy
 Plans
Plans

Company 3

The organization behind the API

Website
Website
 Twitter
Twitter
 LinkedIn
LinkedIn

Other 1

Properties that don't map to a standard resource type

Whitepaper
Whitepaper

Source (apis.yml)

apis.yml Raw ↑ 
name: ProofDraw
description: Provably-fair random selection REST API that seals entry lists with SHA-256 commitments bound to future drand
  (League of Entropy) randomness rounds, producing publicly verifiable draw receipts with client-side open-source verification.
  A draw is created, entries are added as opaque ticket ids, then sealed against a chosen future beacon round on the quicknet
  (3s) or classic (30s) chain; the canonical list file is hashed, mirrored to a public GitHub repository, and anchored with
  OpenTimestamps, so any entrant can re-derive the winner in their own browser from public sources alone. Serves giveaways,
  raffles and sweepstakes, non-profit draws, audit sample selection and task allocation, with HMAC-signed webhooks and bearer
  API-key authentication.
image: https://proofdraw.com/og.png
url: https://raw.githubusercontent.com/api-evangelist/proofdraw/refs/heads/main/apis.yml
created: '2026-07-13'
modified: '2026-08-11'
specificationVersion: '0.23'
tags:
- Randomness
- Provably Fair
- drand
- verifiable-randomness
- Cryptography
- raffle
- giveaway
- Sweepstakes
- Lottery
- Verification
- Webhook
- REST API
tags_raw:
- randomness
- provably-fair
- drand
- verifiable-randomness
- cryptography
- raffle
- giveaway
- sweepstakes
- lottery
- verification
- webhooks
- rest-api
apis:
- name: ProofDraw API
  description: Provably-fair random selection REST API (v1) covering draw lifecycle, account, health, and public verification
    artifacts. HMAC-signed webhooks. Bearer API-key auth.
  humanURL: https://proofdraw.com/api
  baseURL: https://proofdraw.com/api/v1
  image: https://proofdraw.com/og.png
  version: v1
  tags:
  - Randomness
  - Provably Fair
  - drand
  - verifiable-randomness
  - Cryptography
  - raffle
  - giveaway
  - Sweepstakes
  - Lottery
  - Verification
  - Webhook
  - REST API
  tags_raw:
  - randomness
  - provably-fair
  - drand
  - verifiable-randomness
  - cryptography
  - raffle
  - giveaway
  - sweepstakes
  - lottery
  - verification
  - webhooks
  - rest-api
  properties:
  - type: OpenAPI
    url: openapi/proofdraw-api-openapi.yml
  - type: OpenAPI
    url: https://proofdraw.com/openapi.json
  - type: Overlay
    url: overlays/proofdraw-api-overlay.yaml
  - type: Documentation
    url: https://proofdraw.com/api
  - type: APIReference
    url: https://proofdraw.com/api
  contact:
  - FN: ProofDraw
    email: hello@proofdraw.com
    X-twitter: proofdraw
maintainers:
- FN: ProofDraw
  email: hello@proofdraw.com
  url: https://proofdraw.com/
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 95
  at: '2026-07-13T18:06:16.367Z'
x-enrichment:
  date: '2026-08-11'
  status: enriched
  artifacts_added: 23
  pass: local-v1
x-coverage:
  state: covered
  reason: null
  detail: Live OpenAPI 3.0.3 harvested from https://proofdraw.com/openapi.json (200) and the full API reference read from
    https://proofdraw.com/api (200); no wall was hit. The agent surfaces are genuinely absent — every /.well-known/ path,
    /llms.txt and /mcp return 404.
  checked: '2026-08-11'
common:
- type: Website
  url: https://proofdraw.com/
- type: DeveloperPortal
  url: https://proofdraw.com/api
- type: Documentation
  url: https://proofdraw.com/api
- type: APIReference
  url: https://proofdraw.com/api
- type: Support
  url: https://proofdraw.com/contact
- type: GitHubOrganization
  url: https://github.com/proofdraw
- type: SignUp
  url: https://proofdraw.com/register
- type: Login
  url: https://proofdraw.com/login
- type: TermsOfService
  url: https://proofdraw.com/terms
- type: PrivacyPolicy
  url: https://proofdraw.com/privacy
- type: Whitepaper
  url: https://proofdraw.com/whitepaper
- type: Twitter
  url: https://x.com/proofdraw
- type: LinkedIn
  url: https://linkedin.com/company/proofdraw
- type: SourceCode
  url: https://github.com/proofdraw/verifier
- type: DomainSecurity
  url: security/proofdraw-domain-security.yml
- type: Authentication
  url: authentication/proofdraw-authentication.yml
- type: Conventions
  url: conventions/proofdraw-conventions.yml
- type: ErrorCatalog
  url: errors/proofdraw-problem-types.yml
- type: Lifecycle
  url: lifecycle/proofdraw-lifecycle.yml
- type: Conformance
  url: conformance/proofdraw-conformance.yml
- type: DataModel
  url: data-model/proofdraw-data-model.yml
- type: Webhooks
  url: asyncapi/proofdraw-webhooks.yml
- type: Sandbox
  url: sandbox/proofdraw-sandbox.yml
- type: Plans
  url: plans/proofdraw-plans-pricing.yml
- type: RateLimits
  url: rate-limits/proofdraw-rate-limits.yml
- type: LLMsTxt
  url: llms/proofdraw-llms.txt
- type: AgentSkill
  url: skills/_index.yml
- type: VulnerabilityDisclosure
  url: security/proofdraw-vulnerability-disclosure.yml
- type: Security
  url: https://proofdraw.com/contact