Pith Number

pith:UQCNRILZ

pith:1999:UQCNRILZS3RUX24JFAV67TS7JY

not attested not anchored not stored refs pending

The Fabric of Space-time

Charles Francis

arxiv:physics/9906042 v1 · 1999-06-23 · physics.gen-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{UQCNRILZS3RUX24JFAV67TS7JY}

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	2026-07-04T14:45:01.780928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a404d8a17996e34beb89282befce5f4e18903efc69836b942831760543a10ce1

Aliases

arxiv: physics/9906042 · arxiv_version: physics/9906042v1 · doi: 10.48550/arxiv.physics/9906042 · pith_short_12: UQCNRILZS3RU · pith_short_16: UQCNRILZS3RUX24J · pith_short_8: UQCNRILZ

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/UQCNRILZS3RUX24JFAV67TS7JY \
  | 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: a404d8a17996e34beb89282befce5f4e18903efc69836b942831760543a10ce1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "796d748ec135a79adad4ab8d2776d4c3c44ead91ac039e5587b29a8ff5303c03",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "1999-06-23T08:23:30Z",
    "title_canon_sha256": "528f5576a988306e108ea9225febc78aa89fa54241fbd0dcbe922b94b1798916"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/9906042",
    "kind": "arxiv",
    "version": 1
  }
}