Pith Number

pith:25I26VEB

pith:2015:25I26VEBDDSOYJHKEK3QOELPMQ

not attested not anchored not stored refs pending

A Logic of Knowing How

Yanjing Wang

arxiv:1505.06651 v3 · 2015-05-25 · cs.AI · 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{25I26VEBDDSOYJHKEK3QOELPMQ}

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	2026-05-18T01:37:07.264492Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d751af548118e4ec24ea22b707116f6406c2176ca1f75c78cc4a30419c2a92cf

Aliases

arxiv: 1505.06651 · arxiv_version: 1505.06651v3 · doi: 10.48550/arxiv.1505.06651 · pith_short_12: 25I26VEBDDSO · pith_short_16: 25I26VEBDDSOYJHK · pith_short_8: 25I26VEB

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/25I26VEBDDSOYJHKEK3QOELPMQ \
  | 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: d751af548118e4ec24ea22b707116f6406c2176ca1f75c78cc4a30419c2a92cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56bec00fc155a7189a8992e9ba75a62e1f75b09fde76eb61eb680abe9f7d952c",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2015-05-25T14:43:55Z",
    "title_canon_sha256": "fcbcd36582ec8182d7e09e038df3fcd99188173429af11f748736f87a1065c73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.06651",
    "kind": "arxiv",
    "version": 3
  }
}