Pith Number

pith:EQGZAI7R

pith:2020:EQGZAI7RP5UVIQ7LUHXZTSFUQA

not attested not anchored not stored refs pending

Politeness for the Theory of Algebraic Datatypes

Christophe Ringeissen, Clark Barrett, Jane Lange, Pascal Fontaine, Ying Sheng, Yoni Zohar

arxiv:2004.04854 v3 · 2020-04-09 · 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{EQGZAI7RP5UVIQ7LUHXZTSFUQA}

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	2026-07-05T00:54:48.909658Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

240d9023f17f695443eba1ef99c8b4803625e60864460d9f69b9c053c3600627

Aliases

arxiv: 2004.04854 · arxiv_version: 2004.04854v3 · doi: 10.48550/arxiv.2004.04854 · pith_short_12: EQGZAI7RP5UV · pith_short_16: EQGZAI7RP5UVIQ7L · pith_short_8: EQGZAI7R

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/EQGZAI7RP5UVIQ7LUHXZTSFUQA \
  | 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: 240d9023f17f695443eba1ef99c8b4803625e60864460d9f69b9c053c3600627

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5cdb9eed32d33888022c246fb846177ecbb877ea75adc3a6fe4f3739bc90257a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2020-04-09T23:32:12Z",
    "title_canon_sha256": "bbd42f2c3b6b15ef6a0e4cefbbbc91791f47e85c1002c0f7db74bcba1e74816b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.04854",
    "kind": "arxiv",
    "version": 3
  }
}