Pith Number

pith:3T7P7GRX

pith:2018:3T7P7GRXK2L4QDTEEEZJXEWQBI

not attested not anchored not stored refs pending

The Elfe System - Verifying mathematical proofs of undergraduate students

Krysia Broda, Maximilian Dor\'e

arxiv:1801.10513 v1 · 2018-01-31 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3T7P7GRXK2L4QDTEEEZJXEWQBI}

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.

Receipt and verification

First computed	2026-05-18T00:24:40.649256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dcfeff9a375697c80e6421329b92d00a24b51c06e534e08123831565d0e61e69

Aliases

arxiv: 1801.10513 · arxiv_version: 1801.10513v1 · doi: 10.48550/arxiv.1801.10513 · pith_short_12: 3T7P7GRXK2L4 · pith_short_16: 3T7P7GRXK2L4QDTE · pith_short_8: 3T7P7GRX

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/3T7P7GRXK2L4QDTEEEZJXEWQBI \
  | 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: dcfeff9a375697c80e6421329b92d00a24b51c06e534e08123831565d0e61e69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da04595e981eca99bb2c859fd853360a8fb6cac7b5899ab53722b308f57f603f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-01-31T15:58:37Z",
    "title_canon_sha256": "8d19209eda1ae1a52a04e0c218b5a1afaa08b1cd1874ebf7fe6c24d669bdd71c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.10513",
    "kind": "arxiv",
    "version": 1
  }
}