Pith Number

pith:XHP7GP2Z

pith:2008:XHP7GP2ZJ6AX7VF4AMPSKPWHJY

not attested not anchored not stored refs pending

Stable and "bounded excursion" gravastars, and black holes in Einstein's theory of gravity

Anzhong Wang, M.F.A. da Silva, P. Rocha, R. Chan

arxiv:0809.4879 v2 · 2008-09-29 · gr-qc · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XHP7GP2ZJ6AX7VF4AMPSKPWHJY}

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

1 paper in Pith

Herrera Complexity and Shadows of Spherically Symmetric Compact Objects

Receipt and verification

First computed	2026-07-04T15:40:09.536987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9dff33f594f817fd4bc031f253ec74e2c2506ae66ce42ec472f507a28cc552c

Aliases

arxiv: 0809.4879 · arxiv_version: 0809.4879v2 · doi: 10.48550/arxiv.0809.4879 · pith_short_12: XHP7GP2ZJ6AX · pith_short_16: XHP7GP2ZJ6AX7VF4 · pith_short_8: XHP7GP2Z

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/XHP7GP2ZJ6AX7VF4AMPSKPWHJY \
  | 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: b9dff33f594f817fd4bc031f253ec74e2c2506ae66ce42ec472f507a28cc552c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f179f31008298fc73674445866d6038ad9b9e8c132857b434f99440992889bae",
    "cross_cats_sorted": [
      "astro-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2008-09-29T00:38:17Z",
    "title_canon_sha256": "b387e834cb5ee7ae31c3dbfa8a050df9630afb8ab75ff23efce482a39888a6c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.4879",
    "kind": "arxiv",
    "version": 2
  }
}