Pith Number

pith:IDTL6KRD

pith:2000:IDTL6KRDATSBLEAIM4TOWMEMEV

not attested not anchored not stored refs pending

The detection of spiral arm modulation in the stellar disk of an optically flocculent and an optically grand design galaxy

Bruce G. Elmegreen (3), David L. Block (2), Ivanio Puerari (1), Jay A. Frogel (4), Mexico; (2) University Witwatersrand, Paul B. Eskridge (4) ((1) INAOE - Tonantzintla, South Africa; (3) IBM Research Division, USA), USA; (4) The Ohio State University

arxiv:astro-ph/0005345 v1 · 2000-05-16 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IDTL6KRDATSBLEAIM4TOWMEMEV}

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	2026-07-04T14:10:22.346043Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40e6bf2a2304e41590086726eb308c255c30b9c60c1fca8c4d346b48985a6537

Aliases

arxiv: astro-ph/0005345 · arxiv_version: astro-ph/0005345v1 · doi: 10.48550/arxiv.astro-ph/0005345 · pith_short_12: IDTL6KRDATSB · pith_short_16: IDTL6KRDATSBLEAI · pith_short_8: IDTL6KRD

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/IDTL6KRDATSBLEAIM4TOWMEMEV \
  | 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: 40e6bf2a2304e41590086726eb308c255c30b9c60c1fca8c4d346b48985a6537

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "775e0d05ec75ef2d8f5c79463e05e2704c6d5a2b396b14dc643429e80dfe8d57",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-05-16T18:33:22Z",
    "title_canon_sha256": "2b6e5665107a098c5364f26052c5e004e5e26038adf2d38e4fbf94141c7f15f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0005345",
    "kind": "arxiv",
    "version": 1
  }
}