Pith Number

pith:EJGRJVQN

pith:2013:EJGRJVQNZ4HWQRAHPCY276RECT

not attested not anchored not stored refs pending

A Thousand Problems in Cosmology. Chapter 4: Black holes

I.V. Tanatarov, O.B. Zaslavskii, Yu.L. Bolotin

arxiv:1305.0259 v1 · 2013-05-01 · physics.ed-ph · astro-ph.CO · gr-qc · physics.pop-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{EJGRJVQNZ4HWQRAHPCY276RECT}

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	2026-05-18T03:09:22.204310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

224d14d60dcf0f68440778b1affa2414f1453ce93b278a775efc1a040d8eb9b6

Aliases

arxiv: 1305.0259 · arxiv_version: 1305.0259v1 · doi: 10.48550/arxiv.1305.0259 · pith_short_12: EJGRJVQNZ4HW · pith_short_16: EJGRJVQNZ4HWQRAH · pith_short_8: EJGRJVQN

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/EJGRJVQNZ4HWQRAHPCY276RECT \
  | 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: 224d14d60dcf0f68440778b1affa2414f1453ce93b278a775efc1a040d8eb9b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1eaf7a3d05c77c2b7ed3bff2d9eb012794483a3a96ef8851cc7c3c5a7c68b669",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "gr-qc",
      "physics.pop-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2013-05-01T19:59:23Z",
    "title_canon_sha256": "5c3b9bafd7a3c53e08dc04433d8428740a246add02170023a5eea0fd80e1d04f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0259",
    "kind": "arxiv",
    "version": 1
  }
}