Pith Number

pith:4DH4TO5K

pith:2013:4DH4TO5K4HXVPRTVNXOLCVHTBA

not attested not anchored not stored refs pending

Spacetime Singularities

Pankaj S. Joshi

arxiv:1311.0449 v1 · 2013-11-03 · 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{4DH4TO5K4HXVPRTVNXOLCVHTBA}

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	2026-05-18T01:46:39.645528Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0cfc9bbaae1ef57c6756ddcb154f3081efda6086313d1df343d338b52212554

Aliases

arxiv: 1311.0449 · arxiv_version: 1311.0449v1 · doi: 10.48550/arxiv.1311.0449 · pith_short_12: 4DH4TO5K4HXV · pith_short_16: 4DH4TO5K4HXVPRTV · pith_short_8: 4DH4TO5K

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/4DH4TO5K4HXVPRTVNXOLCVHTBA \
  | 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: e0cfc9bbaae1ef57c6756ddcb154f3081efda6086313d1df343d338b52212554

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b43f8bc94db7da92f2b8a9ca7bcfb9c8a8e23a3b59a2b0baeb63eea633379245",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-11-03T10:05:46Z",
    "title_canon_sha256": "867df59c593b72f20c3f04c12847065b489437de5c471503ee64dc389b06fda3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.0449",
    "kind": "arxiv",
    "version": 1
  }
}