Pith Number

pith:UIDOKEO2

pith:1999:UIDOKEO2QQO6KU65VVHKRMXZIR

not attested not anchored not stored refs pending

A candidate for a background independent formulation of M theory

Lee Smolin

arxiv:hep-th/9903166 v4 · 1999-03-19 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UIDOKEO2QQO6KU65VVHKRMXZIR}

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	2026-05-18T02:35:54.528984Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a206e511da841de553ddad4ea8b2f9446073545e75c4983b4484e9bc5f6498e4

Aliases

arxiv: hep-th/9903166 · arxiv_version: hep-th/9903166v4 · doi: 10.48550/arxiv.hep-th/9903166 · pith_short_12: UIDOKEO2QQO6 · pith_short_16: UIDOKEO2QQO6KU65 · pith_short_8: UIDOKEO2

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/UIDOKEO2QQO6KU65VVHKRMXZIR \
  | 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: a206e511da841de553ddad4ea8b2f9446073545e75c4983b4484e9bc5f6498e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38f14c9d45515b4f5fa21f6bc0e7961065ce56a041372d451f8bf25c7d189e0b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1999-03-19T17:20:02Z",
    "title_canon_sha256": "26979061935a4b7ca16219b495ec8fdfa073cdcf00666b49411cc8bdd5ab7a4d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9903166",
    "kind": "arxiv",
    "version": 4
  }
}