Pith Number

pith:L5KUG3NS

pith:2010:L5KUG3NSOZZHN5IQOY32NM75IC

not attested not anchored not stored refs pending

Unimodular loop quantum gravity and the problems of time

Lee Smolin

arxiv:1008.1759 v1 · 2010-08-10 · 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{L5KUG3NSOZZHN5IQOY32NM75IC}

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	2026-05-18T03:23:37.355180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f55436db2767276f5107637a6b3fd40b4f27d0a0b4e314175c9c85868b979b2

Aliases

arxiv: 1008.1759 · arxiv_version: 1008.1759v1 · doi: 10.48550/arxiv.1008.1759 · pith_short_12: L5KUG3NSOZZH · pith_short_16: L5KUG3NSOZZHN5IQ · pith_short_8: L5KUG3NS

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/L5KUG3NSOZZHN5IQOY32NM75IC \
  | 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: 5f55436db2767276f5107637a6b3fd40b4f27d0a0b4e314175c9c85868b979b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35a92fba8d26a98a59bcd88ef63c50f383fa14c18abbef3fc125a02364de133b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2010-08-10T17:31:25Z",
    "title_canon_sha256": "8af4a56f3e4a1d856189f9ea57cb6bcc180f5bb090ae85cab390ac1ec379abe1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.1759",
    "kind": "arxiv",
    "version": 1
  }
}