Pith Number

pith:S5NHKJZ6

pith:2013:S5NHKJZ66KRLWOO6DLIZKTHOY7

not attested not anchored not stored refs pending

Galactic Spiral Arms: Structure and Dynamics Given by an Equation of Motion

Gregory Buck

arxiv:1303.0249 v1 · 2013-03-01 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S5NHKJZ66KRLWOO6DLIZKTHOY7}

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	2026-05-18T03:32:06.485183Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

975a75273ef2a2bb39de1ad1954ceec7f50e138bb8948dde467dc0576bfe5d1d

Aliases

arxiv: 1303.0249 · arxiv_version: 1303.0249v1 · doi: 10.48550/arxiv.1303.0249 · pith_short_12: S5NHKJZ66KRL · pith_short_16: S5NHKJZ66KRLWOO6 · pith_short_8: S5NHKJZ6

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/S5NHKJZ66KRLWOO6DLIZKTHOY7 \
  | 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: 975a75273ef2a2bb39de1ad1954ceec7f50e138bb8948dde467dc0576bfe5d1d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61879f01b2a30f117e76bfeb1ddf4627bed125a5bab76848a7d1924394a0b040",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-03-01T18:50:10Z",
    "title_canon_sha256": "602378fd61d011ac52cdeccf4a11a133eb8f3738b39914b466fef4702da8eae7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.0249",
    "kind": "arxiv",
    "version": 1
  }
}