Pith Number

pith:P6HKS4NI

pith:2019:P6HKS4NI4MJ62GY3V6UUVAXF44

not attested not anchored not stored refs pending

A Type Theory for Defining Logics and Proofs

Andreas Abel, Brigitte Pientka, David Thibodeau, Francisco Ferreira, Rebecca Zucchini

arxiv:1905.02617 v1 · 2019-05-07 · cs.LO · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P6HKS4NI4MJ62GY3V6UUVAXF44}

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	2026-05-17T23:46:31.814554Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f8ea971a8e313ed1b1bafa94a82e5e70d9721e090fdf4edd86018e625879190

Aliases

arxiv: 1905.02617 · arxiv_version: 1905.02617v1 · doi: 10.48550/arxiv.1905.02617 · pith_short_12: P6HKS4NI4MJ6 · pith_short_16: P6HKS4NI4MJ62GY3 · pith_short_8: P6HKS4NI

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/P6HKS4NI4MJ62GY3V6UUVAXF44 \
  | 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: 7f8ea971a8e313ed1b1bafa94a82e5e70d9721e090fdf4edd86018e625879190

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e6f746033bc50959f8f89a6788dedd113314978f83c9ec068b49adafd5dd362",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-05-07T14:43:01Z",
    "title_canon_sha256": "34fd589aa7beac00f74ef30343a724c6d67e2e9f602f5e14843743a61e717b87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.02617",
    "kind": "arxiv",
    "version": 1
  }
}