Pith Number

pith:XEPLSZ2Z

pith:2011:XEPLSZ2ZGNTCJYDB4DG6WCTUYP

not attested not anchored not stored refs pending

On Understanding and Machine Understanding

Tong Chern

arxiv:1103.5034 v2 · 2011-03-24 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XEPLSZ2ZGNTCJYDB4DG6WCTUYP}

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	2026-05-18T00:24:40.334803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b91eb96759336624e061e0cdeb0a74c3f1097aebe42daef71a2f8c666fac2f5d

Aliases

arxiv: 1103.5034 · arxiv_version: 1103.5034v2 · doi: 10.48550/arxiv.1103.5034 · pith_short_12: XEPLSZ2ZGNTC · pith_short_16: XEPLSZ2ZGNTCJYDB · pith_short_8: XEPLSZ2Z

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/XEPLSZ2ZGNTCJYDB4DG6WCTUYP \
  | 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: b91eb96759336624e061e0cdeb0a74c3f1097aebe42daef71a2f8c666fac2f5d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4936c9f2588d323d188e948c1eaabf6a003c7fdac2da44094686da94b0b01459",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2011-03-24T03:35:24Z",
    "title_canon_sha256": "702124d7ddf45e66f281bf0c3bd9edd111626cb35c6801525f8afd4f1e86c977"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.5034",
    "kind": "arxiv",
    "version": 2
  }
}