Pith Number

pith:BGLCZ4WG

pith:2017:BGLCZ4WGJM6EXHGNH6Z52PMFIE

not attested not anchored not stored refs pending

Galaxy Zoo and SpArcFiRe: Constraints on spiral arm formation mechanisms from spiral arm number and pitch angles

Brooke D. Simmons, Carolin N. Cardamone, Chris J. Lintott, Karen L. Masters, Rebecca J. Smethurst, Ross E. Hart, Sandor J. Kruk, Steven P. Bamford, Wayne B. Hayes, William C. Keel

arxiv:1708.04628 v1 · 2017-08-15 · 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{BGLCZ4WGJM6EXHGNH6Z52PMFIE}

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	2026-05-18T00:34:17.507013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09962cf2c64b3c4b9ccd3fb3dd3d85413869de840e2892579ea88f0f04b362f8

Aliases

arxiv: 1708.04628 · arxiv_version: 1708.04628v1 · doi: 10.48550/arxiv.1708.04628 · pith_short_12: BGLCZ4WGJM6E · pith_short_16: BGLCZ4WGJM6EXHGN · pith_short_8: BGLCZ4WG

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/BGLCZ4WGJM6EXHGNH6Z52PMFIE \
  | 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: 09962cf2c64b3c4b9ccd3fb3dd3d85413869de840e2892579ea88f0f04b362f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eaab486d2935f4ea9203a5f6748d1311877a0d9211bd87edeba31039225b16f5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-08-15T18:00:07Z",
    "title_canon_sha256": "187613aafa23622f7f4c690cb452207dab62f7ae8e1a86b4d6dc443878222c50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.04628",
    "kind": "arxiv",
    "version": 1
  }
}