Pith Number

pith:QFKBSWGG

pith:1993:QFKBSWGGXHXTTZSHISDW2LLBNH

not attested not anchored not stored refs pending

Canonical Quantum Gravity

Karel Kuchar

arxiv:gr-qc/9304012 v1 · 1993-04-08 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QFKBSWGGXHXTTZSHISDW2LLBNH}

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.

Cited by

2 papers in Pith

Wormholes as red herrings: reflection positivity and the reconstruction of unitary quantum field theories

Problem of Time and Background Independence: classical version's higher Lie Theory

Receipt and verification

First computed	2026-07-04T14:25:59.405171Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81541958c6b9ef39e64744876d2d6169c3d4d4ae5fcc029e856dcf848105fe2c

Aliases

arxiv: gr-qc/9304012 · arxiv_version: gr-qc/9304012v1 · doi: 10.48550/arxiv.gr-qc/9304012 · pith_short_12: QFKBSWGGXHXT · pith_short_16: QFKBSWGGXHXTTZSH · pith_short_8: QFKBSWGG

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/QFKBSWGGXHXTTZSHISDW2LLBNH \
  | 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: 81541958c6b9ef39e64744876d2d6169c3d4d4ae5fcc029e856dcf848105fe2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "453f41f062c8a331ab961797efd6047f09f2957082ff2c8071ba7a67abf65753",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1993-04-08T22:00:56Z",
    "title_canon_sha256": "213d2b614125018b446023fc8d6f61315a1c4fb8356d6ca4483bcf599a2c3d21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9304012",
    "kind": "arxiv",
    "version": 1
  }
}