Pith Number

pith:75G6QT3R

pith:2019:75G6QT3R5I5GMBLRGTPHWDKI34

not attested not anchored not stored refs pending

Applications of canonical quantum gravity to cosmology

Claus Gerhardt

arxiv:1908.02145 v1 · 2019-08-03 · gr-qc · astro-ph.HE · 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{75G6QT3R5I5GMBLRGTPHWDKI34}

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	2026-07-04T23:52:07.001019Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff4de84f71ea3a66057134de7b0d48df12b105d6e4ad9201b3dc74b4f61ca591

Aliases

arxiv: 1908.02145 · arxiv_version: 1908.02145v1 · doi: 10.48550/arxiv.1908.02145 · pith_short_12: 75G6QT3R5I5G · pith_short_16: 75G6QT3R5I5GMBLR · pith_short_8: 75G6QT3R

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/75G6QT3R5I5GMBLRGTPHWDKI34 \
  | 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: ff4de84f71ea3a66057134de7b0d48df12b105d6e4ad9201b3dc74b4f61ca591

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebbeaa5a8caf591df5483bfa39b795821198effa507344b4a737c69f63119451",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-08-03T14:19:25Z",
    "title_canon_sha256": "a7ecc6eabccce8f210e15121fcc5b965df732026595454aa698610d24b8c343c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02145",
    "kind": "arxiv",
    "version": 1
  }
}