Pith Number

pith:S5Q46NIS

pith:2013:S5Q46NISFO5PEVEFR6Q6SRHUK2

not attested not anchored not stored refs pending

Reviewing the observational evidence against long-lived spiral arms in galaxies

Eric E. Martinez-Garcia, Ivanio Puerari

arxiv:1310.1973 v1 · 2013-10-07 · astro-ph.CO · 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{S5Q46NISFO5PEVEFR6Q6SRHUK2}

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	2026-05-18T03:10:59.764896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9761cf35122bbaf254858fa1e944f456b63d750c96b3a5de16bee93262040660

Aliases

arxiv: 1310.1973 · arxiv_version: 1310.1973v1 · doi: 10.48550/arxiv.1310.1973 · pith_short_12: S5Q46NISFO5P · pith_short_16: S5Q46NISFO5PEVEF · pith_short_8: S5Q46NIS

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/S5Q46NISFO5PEVEFR6Q6SRHUK2 \
  | 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: 9761cf35122bbaf254858fa1e944f456b63d750c96b3a5de16bee93262040660

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9d093feab22fcbb127e28f82a17212f56bd5138af574c0fd33241cefc969e3f",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-10-07T23:43:59Z",
    "title_canon_sha256": "16d8890085e1658b43d41b87b1f7c7b8f2c0c57528fd80ae3a9b6f788c19b340"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.1973",
    "kind": "arxiv",
    "version": 1
  }
}