Pith Number

pith:UHJDZIPH

pith:2017:UHJDZIPHX5LQLB2TAENXKH3VH7

not attested not anchored not stored refs pending

Casper the Friendly Finality Gadget

Virgil Griffith, Vitalik Buterin

arxiv:1710.09437 v4 · 2017-10-25 · cs.CR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UHJDZIPHX5LQLB2TAENXKH3VH7}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

3 papers in Pith

CoBRA: A Universal Strategyproof Confirmation Protocol for Quorum-based Proof-of-Stake Blockchains

Securing Elliptic Curve Cryptocurrencies against Quantum Vulnerabilities: Resource Estimates and Mitigations

Adversarial procurement in blockchains

Receipt and verification

First computed	2026-05-17T23:55:59.928088Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1d23ca1e7bf57058753011b751f753ffe6c09723575ea055c63497cfe973919

Aliases

arxiv: 1710.09437 · arxiv_version: 1710.09437v4 · doi: 10.48550/arxiv.1710.09437 · pith_short_12: UHJDZIPHX5LQ · pith_short_16: UHJDZIPHX5LQLB2T · pith_short_8: UHJDZIPH

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/UHJDZIPHX5LQLB2TAENXKH3VH7 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: a1d23ca1e7bf57058753011b751f753ffe6c09723575ea055c63497cfe973919

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d255216a8d4f9b45daa6da246ce4c2c99bbf2e5ba90fb7d98140249a8a9051a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2017-10-25T19:54:52Z",
    "title_canon_sha256": "e8e39be8009ee2b02b36c03260b8beae82f657be5b567fcb5b93bf273aa21f53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.09437",
    "kind": "arxiv",
    "version": 4
  }
}