Pith Number

pith:TUZDCRWB

pith:2016:TUZDCRWB47JOWK6ZLI7BXOL4G2

not attested not anchored not stored refs pending

Strong Evidence for the Density-wave Theory of Spiral Structure in Disk Galaxies

Benjamin L. Davis, Daniel Kennefick, Douglas W. Shields, Hamed Pour-Imani, Julia Kennefick, Mohamed Shameer Abdeen

arxiv:1608.00969 v1 · 2016-08-02 · 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{TUZDCRWB47JOWK6ZLI7BXOL4G2}

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	2026-05-18T01:09:57.051671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d323146c1e7d2eb2bd95a3e1bb97c369a0a381dd86359a72b2f777bf10ec4b6

Aliases

arxiv: 1608.00969 · arxiv_version: 1608.00969v1 · doi: 10.48550/arxiv.1608.00969 · pith_short_12: TUZDCRWB47JO · pith_short_16: TUZDCRWB47JOWK6Z · pith_short_8: TUZDCRWB

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/TUZDCRWB47JOWK6ZLI7BXOL4G2 \
  | 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: 9d323146c1e7d2eb2bd95a3e1bb97c369a0a381dd86359a72b2f777bf10ec4b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12a10595b9a7dcf8c4a5735ee20f778339c9e93e3a3ed6a97fe2db822e06e0b4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-08-02T18:08:01Z",
    "title_canon_sha256": "95f548e9a535e77a2b8e321d3900a8cc9f4a9632352c57ebb1c1d93519d8d97d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.00969",
    "kind": "arxiv",
    "version": 1
  }
}