Pith Number

pith:U5R3Y6RQ

pith:2014:U5R3Y6RQIST3QEZBZUZFHGSJKQ

not attested not anchored not stored refs pending

Cloud and Star Formation in Spiral Arms

Alex Pettitt, Clare Dobbs

arxiv:1407.0250 v1 · 2014-07-01 · 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{U5R3Y6RQIST3QEZBZUZFHGSJKQ}

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	2026-05-18T00:21:29.492107Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a763bc7a3044a7b81321cd32539a49541a336d1266fd3b6a0bd59750163cac10

Aliases

arxiv: 1407.0250 · arxiv_version: 1407.0250v1 · doi: 10.48550/arxiv.1407.0250 · pith_short_12: U5R3Y6RQIST3 · pith_short_16: U5R3Y6RQIST3QEZB · pith_short_8: U5R3Y6RQ

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/U5R3Y6RQIST3QEZBZUZFHGSJKQ \
  | 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: a763bc7a3044a7b81321cd32539a49541a336d1266fd3b6a0bd59750163cac10

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a5c96bf36ead57e3a2be33bf7a24ffed256e1a3e7b3ec408aeb89638a6f43913",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-07-01T14:19:50Z",
    "title_canon_sha256": "cc6db8e443db8f6d2b5316b2b6fabf99adef0b654113789818b38d00ea7e6bdc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.0250",
    "kind": "arxiv",
    "version": 1
  }
}