Pith Number

pith:OBRQWPHZ

pith:2021:OBRQWPHZBBRVST57D6MN652DMX

not attested not anchored not stored refs pending

Towards General Natural Language Understanding with Probabilistic Worldbuilding

Abulhair Saparov, Tom M. Mitchell

arxiv:2105.02486 v2 · 2021-05-06 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OBRQWPHZBBRVST57D6MN652DMX}

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	2026-07-05T03:42:21.504239Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

70630b3cf90863594fbf1f98df774365d5a1e59fba65e4eaacf10a05a0e44a9c

Aliases

arxiv: 2105.02486 · arxiv_version: 2105.02486v2 · doi: 10.48550/arxiv.2105.02486 · pith_short_12: OBRQWPHZBBRV · pith_short_16: OBRQWPHZBBRVST57 · pith_short_8: OBRQWPHZ

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/OBRQWPHZBBRVST57D6MN652DMX \
  | 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: 70630b3cf90863594fbf1f98df774365d5a1e59fba65e4eaacf10a05a0e44a9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc9435fe289c7f81e62d830779e090f5e10a486b3bd24b13c8a8e93d7eb76a02",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-05-06T07:38:43Z",
    "title_canon_sha256": "233e7011dca22abba3a48f773f24724ad69301d82059c53302d8cf79093801f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.02486",
    "kind": "arxiv",
    "version": 2
  }
}