Pith Number

pith:2JJYOQ7F

pith:2015:2JJYOQ7FVENURQU2YICQYVSJ4Q

not attested not anchored not stored refs pending

The Galactic Branches as a Possible Evidence for Transient Spiral Arms

Angeles P\'erez-Villegas, B\'arbara Pichardo, Gilberto C. G\'omez

arxiv:1505.04327 v2 · 2015-05-16 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2JJYOQ7FVENURQU2YICQYVSJ4Q}

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	2026-05-18T02:03:59.381231Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2538743e5a91b48c29ac2050c5649e41f378d849711e0d4f33a50b37d67408d

Aliases

arxiv: 1505.04327 · arxiv_version: 1505.04327v2 · doi: 10.48550/arxiv.1505.04327 · pith_short_12: 2JJYOQ7FVENU · pith_short_16: 2JJYOQ7FVENURQU2 · pith_short_8: 2JJYOQ7F

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/2JJYOQ7FVENURQU2YICQYVSJ4Q \
  | 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: d2538743e5a91b48c29ac2050c5649e41f378d849711e0d4f33a50b37d67408d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3313e358f23f4301e5901b8f51a829d92707f60555933764f0a26fbfe24be700",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-05-16T21:21:10Z",
    "title_canon_sha256": "97531db83e11e88b8dedc915553cb30b6b7ee2330af74358eaf382cbd2596ba3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.04327",
    "kind": "arxiv",
    "version": 2
  }
}