Pith Number

pith:USE62G24

pith:2019:USE62G24AI2VAR7CLQLLEYIS6W

not attested not anchored not stored refs pending

The shapes of spiral arms in the S$^4$G survey and their connection with stellar bars

Heikki Salo, Johan H. Knapen, Mart\'in Herrera-Endoqui, Sim\'on D\'iaz-Garc\'ia

arxiv:1908.04246 v3 · 2019-08-12 · 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{USE62G24AI2VAR7CLQLLEYIS6W}

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	2026-07-05T00:15:39.822777Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a489ed1b5c02355047e25c16b26112f59ec89c529a17448ae6d06f59ba912e84

Aliases

arxiv: 1908.04246 · arxiv_version: 1908.04246v3 · doi: 10.48550/arxiv.1908.04246 · pith_short_12: USE62G24AI2V · pith_short_16: USE62G24AI2VAR7C · pith_short_8: USE62G24

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/USE62G24AI2VAR7CLQLLEYIS6W \
  | 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: a489ed1b5c02355047e25c16b26112f59ec89c529a17448ae6d06f59ba912e84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb755ad85fd17cd101af38136d16ae27f810c7d812d77e819fd3325ddda7d21b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-08-12T16:53:49Z",
    "title_canon_sha256": "0ea907afa8882239ab31597207d54981f8f5715cb711fc46a65c6059af723f6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04246",
    "kind": "arxiv",
    "version": 3
  }
}