Pith Number

pith:KYUZ4Z3H

pith:2011:KYUZ4Z3HIHVZ62VNOBF42KT376

not attested not anchored not stored refs pending

Observational Evidence Against Long-Lived Spiral Arms in Galaxies

Adam Leroy, Clare Dobbs, Fabian Walter, Hans-Walter Rix, Kelly Foyle

arxiv:1105.5141 v1 · 2011-05-25 · 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{KYUZ4Z3HIHVZ62VNOBF42KT376}

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	2026-05-18T02:01:50.742016Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

56299e676741eb9f6aad704bcd2a7bffa25cdb99318597090f618b60dcfbc4da

Aliases

arxiv: 1105.5141 · arxiv_version: 1105.5141v1 · doi: 10.48550/arxiv.1105.5141 · pith_short_12: KYUZ4Z3HIHVZ · pith_short_16: KYUZ4Z3HIHVZ62VN · pith_short_8: KYUZ4Z3H

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/KYUZ4Z3HIHVZ62VNOBF42KT376 \
  | 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: 56299e676741eb9f6aad704bcd2a7bffa25cdb99318597090f618b60dcfbc4da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06933022afe72a622471d48cfe2f62dcae17b40f56551edf78a69abf2830769b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-05-25T20:00:05Z",
    "title_canon_sha256": "b5a0097308de974bfad4a4a2b95126c3f37ab208ad6af33001f705465863ad0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.5141",
    "kind": "arxiv",
    "version": 1
  }
}