Pith Number

pith:NTNUOKDB

pith:2012:NTNUOKDB2TISMUJCSWMZPAGXM3

not attested not anchored not stored refs pending

Clearing Out a Galaxy

Andrew R. King, Kastytis Zubovas

arxiv:1201.0866 v1 · 2012-01-04 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NTNUOKDB2TISMUJCSWMZPAGXM3}

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	2026-05-18T01:58:57.958622Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cdb472861d4d126512295999780d766f24397040ab34439105210299852b9ed

Aliases

arxiv: 1201.0866 · arxiv_version: 1201.0866v1 · doi: 10.48550/arxiv.1201.0866 · pith_short_12: NTNUOKDB2TIS · pith_short_16: NTNUOKDB2TISMUJC · pith_short_8: NTNUOKDB

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/NTNUOKDB2TISMUJCSWMZPAGXM3 \
  | 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: 6cdb472861d4d126512295999780d766f24397040ab34439105210299852b9ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3327c6e4202a2d487725becfd4ed9ac5f32b8498b63277230b6b19cce24b5124",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-01-04T10:28:41Z",
    "title_canon_sha256": "78a8f5e7a3321073ed615cc40b208507d99f8c00c648e2dd844215a48cde32b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.0866",
    "kind": "arxiv",
    "version": 1
  }
}