Pith Number

pith:5P5XUNXO

pith:2016:5P5XUNXOUVOT5OM7XUIZY2KP5J

not attested not anchored not stored refs pending

Type checking through unification

Andreas Abel, Francesco Mazzoli

arxiv:1609.09709 v1 · 2016-09-30 · 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{5P5XUNXOUVOT5OM7XUIZY2KP5J}

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	2026-05-18T01:03:33.619180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ebfb7a36eea55d3eb99fbd119c694fea7ae4c09e7333987e0d472deb81524fe0

Aliases

arxiv: 1609.09709 · arxiv_version: 1609.09709v1 · doi: 10.48550/arxiv.1609.09709 · pith_short_12: 5P5XUNXOUVOT · pith_short_16: 5P5XUNXOUVOT5OM7 · pith_short_8: 5P5XUNXO

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/5P5XUNXOUVOT5OM7XUIZY2KP5J \
  | 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: ebfb7a36eea55d3eb99fbd119c694fea7ae4c09e7333987e0d472deb81524fe0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e90fa51c29651b436af67f15202085f22b35a1ed14cd2e0785bfd824f844336c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2016-09-30T13:03:25Z",
    "title_canon_sha256": "80c9a9e5e98f41d9293480587dbf4497f1b0542eebf63dd76375b7025a8c8688"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.09709",
    "kind": "arxiv",
    "version": 1
  }
}