Pith Number

pith:BNLLRDYS

pith:2013:BNLLRDYSCR5AXECTME73VUT4TK

not attested not anchored not stored refs pending

Automated Quantitative Description of Spiral Galaxy Arm-Segment Structure

Darren Davis, Wayne Hayes

arxiv:1301.5484 v2 · 2013-01-23 · astro-ph.CO · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BNLLRDYSCR5AXECTME73VUT4TK}

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	2026-05-18T03:22:05.612156Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b56b88f12147a0b9053613fbad27c9a94831491bd8168bbf35e9aae7d982cc0

Aliases

arxiv: 1301.5484 · arxiv_version: 1301.5484v2 · doi: 10.48550/arxiv.1301.5484 · pith_short_12: BNLLRDYSCR5A · pith_short_16: BNLLRDYSCR5AXECT · pith_short_8: BNLLRDYS

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/BNLLRDYSCR5AXECTME73VUT4TK \
  | 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: 0b56b88f12147a0b9053613fbad27c9a94831491bd8168bbf35e9aae7d982cc0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "631d58b88c72b1b7a60d7b78cc1eba82020609350a36a6d3ce4f6a8bbf9faa17",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-01-23T12:31:05Z",
    "title_canon_sha256": "d479674290e7f6e22130ae22e3aaaecc1957fc24fd2cea2b10313b9706169a6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.5484",
    "kind": "arxiv",
    "version": 2
  }
}