Pith Number

pith:63HLA2XB

pith:2012:63HLA2XB3IPBPGCCRYNMJG5CLE

not attested not anchored not stored refs pending

Probabilities on Sentences in an Expressive Logic

John W. Lloyd, Kee Siong Ng, Marcus Hutter, William T. B. Uther

arxiv:1209.2620 v1 · 2012-09-12 · cs.LO · cs.AI · cs.LG · math.LO · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{63HLA2XB3IPBPGCCRYNMJG5CLE}

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	2026-05-18T03:45:42.629569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6ceb06ae1da1e1798428e1ac49ba2590fac0d92f50f0fff93cfa0249dc2adf8

Aliases

arxiv: 1209.2620 · arxiv_version: 1209.2620v1 · doi: 10.48550/arxiv.1209.2620 · pith_short_12: 63HLA2XB3IPB · pith_short_16: 63HLA2XB3IPBPGCC · pith_short_8: 63HLA2XB

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/63HLA2XB3IPBPGCCRYNMJG5CLE \
  | 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: f6ceb06ae1da1e1798428e1ac49ba2590fac0d92f50f0fff93cfa0249dc2adf8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36c78b408ef515f28d76b84622b8ddcd6c0e349d54ab8b734cd9a1b08c698b96",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG",
      "math.LO",
      "math.PR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2012-09-12T14:17:09Z",
    "title_canon_sha256": "7da426ad7110342c5486662fc2ceb7a2f06bafa9a5c2cba584e667da9708662c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.2620",
    "kind": "arxiv",
    "version": 1
  }
}