Pith Number

pith:2JHWRAJY

pith:2021:2JHWRAJY6JTK4WRQWHJCNPHNVH

not attested not anchored not stored refs pending

Bar-driven Leading Spiral Arms in a Counter-rotating Dark Matter Halo

Angela Collier, Ann-Marie Madigan, Emma Lieb

arxiv:2110.02149 v1 · 2021-10-05 · astro-ph.GA · physics.comp-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{2JHWRAJY6JTK4WRQWHJCNPHNVH}

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	2026-07-05T03:23:51.923521Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d24f688138f266ae5a30b1d226bceda9f365a448a94c6497b53ac0d8f19312ca

Aliases

arxiv: 2110.02149 · arxiv_version: 2110.02149v1 · doi: 10.48550/arxiv.2110.02149 · pith_short_12: 2JHWRAJY6JTK · pith_short_16: 2JHWRAJY6JTK4WRQ · pith_short_8: 2JHWRAJY

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/2JHWRAJY6JTK4WRQWHJCNPHNVH \
  | 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: d24f688138f266ae5a30b1d226bceda9f365a448a94c6497b53ac0d8f19312ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f92439a6f20ad8411bb241ea2d7709f7c86211de0ad5b8003c47513d02ed451",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-10-05T16:26:44Z",
    "title_canon_sha256": "2ea736a0e72e5e0092563d2fe2f21160bc89965917211d4e1797441d9e74c58e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.02149",
    "kind": "arxiv",
    "version": 1
  }
}