Pith Number

pith:7NB3ADZF

pith:2013:7NB3ADZFEH3CNHRDBYG5TCTBZJ

not attested not anchored not stored refs pending

Polar rings and the 3D-shape of dark matter

Francoise Combes (Obs-Paris, LERMA)

arxiv:1312.6475 v1 · 2013-12-23 · 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{7NB3ADZFEH3CNHRDBYG5TCTBZJ}

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	2026-05-18T02:49:30.623499Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb43b00f2521f6269e230e0dd98a61ca49765e80f6b3b0b68b585a5ca9dd5dd2

Aliases

arxiv: 1312.6475 · arxiv_version: 1312.6475v1 · doi: 10.48550/arxiv.1312.6475 · pith_short_12: 7NB3ADZFEH3C · pith_short_16: 7NB3ADZFEH3CNHRD · pith_short_8: 7NB3ADZF

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/7NB3ADZFEH3CNHRDBYG5TCTBZJ \
  | 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: fb43b00f2521f6269e230e0dd98a61ca49765e80f6b3b0b68b585a5ca9dd5dd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89f3298c36f353514e317e5f748b2f6ff55e67fae9e2e0245d72d83aabfd6ebc",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-12-23T08:02:44Z",
    "title_canon_sha256": "103d148447a294f89998556b7104d5b10dbc19c432873278d87b2f50ec2f5e0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.6475",
    "kind": "arxiv",
    "version": 1
  }
}