Pith Number

pith:W4PQF2VW

pith:2011:W4PQF2VW5DSKSX6ICZIF2KK3EL

not attested not anchored not stored refs pending

Detecting Incapacity

Graeme Smith, John A. Smolin

arxiv:1108.1807 v1 · 2011-08-08 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W4PQF2VW5DSKSX6ICZIF2KK3EL}

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	2026-05-18T03:34:46.328989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b71f02eab6e8e4a95fc816505d295b22dec006043788e7be7d727c02ef0984b5

Aliases

arxiv: 1108.1807 · arxiv_version: 1108.1807v1 · doi: 10.48550/arxiv.1108.1807 · pith_short_12: W4PQF2VW5DSK · pith_short_16: W4PQF2VW5DSKSX6I · pith_short_8: W4PQF2VW

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/W4PQF2VW5DSKSX6ICZIF2KK3EL \
  | 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: b71f02eab6e8e4a95fc816505d295b22dec006043788e7be7d727c02ef0984b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04f0c68401b1edea56ed64bfb5d9ec989bb40a0b779997e7d9c25ac4166b2f3d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-08-08T20:08:38Z",
    "title_canon_sha256": "7e2cf08914a465f1e3fe079de0ee238b3473b6734e05eecdc23b3e1f8859b439"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.1807",
    "kind": "arxiv",
    "version": 1
  }
}