Pith Number

pith:MCHFQM6Z

pith:2009:MCHFQM6ZRX2LETYRQWWHIF2TS5

not attested not anchored not stored refs pending

Radial extent of the SGB in NGC 1851

E. Pancino, M. Catelan, M. Hempel, M. Rejkuba, M. Zoccali, R. Carrera

arxiv:0901.4476 v2 · 2009-01-28 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MCHFQM6ZRX2LETYRQWWHIF2TS5}

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	2026-05-18T02:14:55.435527Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

608e5833d98df4b24f1185ac741753974ed6c61e25f01221c7923c05d8d5f9db

Aliases

arxiv: 0901.4476 · arxiv_version: 0901.4476v2 · doi: 10.48550/arxiv.0901.4476 · pith_short_12: MCHFQM6ZRX2L · pith_short_16: MCHFQM6ZRX2LETYR · pith_short_8: MCHFQM6Z

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/MCHFQM6ZRX2LETYRQWWHIF2TS5 \
  | 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: 608e5833d98df4b24f1185ac741753974ed6c61e25f01221c7923c05d8d5f9db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b112c7fa9b7a8639e812c033723094bdd275ea1d32e87d4c2109282806fe90d2",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-01-28T14:51:16Z",
    "title_canon_sha256": "48f765f79c6e7e34163f544beb3d0bc630abd2635b52cc684c27ba8f614a3049"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.4476",
    "kind": "arxiv",
    "version": 2
  }
}