Pith Number

pith:72QS5M5X

pith:2012:72QS5M5XAV5R33ANHHVYCNPWJQ

not attested not anchored not stored refs pending

In search of lost spacetime: philosophical issues arising in quantum gravity

Christian Wuthrich

arxiv:1207.1489 v1 · 2012-07-04 · physics.hist-ph · 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{72QS5M5XAV5R33ANHHVYCNPWJQ}

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	2026-05-18T03:16:17.332444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fea12eb3b7057b1dec0d39eb8135f64c263c2a7f32192023af939b46d50bed67

Aliases

arxiv: 1207.1489 · arxiv_version: 1207.1489v1 · doi: 10.48550/arxiv.1207.1489 · pith_short_12: 72QS5M5XAV5R · pith_short_16: 72QS5M5XAV5R33AN · pith_short_8: 72QS5M5X

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/72QS5M5XAV5R33ANHHVYCNPWJQ \
  | 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: fea12eb3b7057b1dec0d39eb8135f64c263c2a7f32192023af939b46d50bed67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "141662f40cfc9837930ee364b008694e903892165bac171c952d44c6584daa7a",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2012-07-04T15:16:38Z",
    "title_canon_sha256": "e3bee506347927985286f5882c3e0644d346ed9ac26aad3d95905505b8b7c6b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.1489",
    "kind": "arxiv",
    "version": 1
  }
}