Pith Number

pith:BTS2FMU2

pith:2005:BTS2FMU27TZ7PE5DUBLHDMILAN

not attested not anchored not stored refs pending

West-Side Story (On the History of Density-Wave Spiral Theories in the 1960s)

Leonid Marochnik

arxiv:astro-ph/0501170 v1 · 2005-01-10 · 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{BTS2FMU27TZ7PE5DUBLHDMILAN}

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.

Cited by

1 paper in Pith

Galactokinetics II: Spiral structure

Receipt and verification

First computed	2026-07-04T14:14:02.211140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ce5a2b29afcf3f793a3a05671b10b036493a5aba072ab3bc64cbacf3e459753

Aliases

arxiv: astro-ph/0501170 · arxiv_version: astro-ph/0501170v1 · doi: 10.48550/arxiv.astro-ph/0501170 · pith_short_12: BTS2FMU27TZ7 · pith_short_16: BTS2FMU27TZ7PE5D · pith_short_8: BTS2FMU2

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/BTS2FMU27TZ7PE5DUBLHDMILAN \
  | 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: 0ce5a2b29afcf3f793a3a05671b10b036493a5aba072ab3bc64cbacf3e459753

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdefd0f2f7f87cf97e0beea7e8814663b649cdb792f4c8e89fe96bc2d27cb8f9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-01-10T21:19:24Z",
    "title_canon_sha256": "4dbe789343cd88d3b29891509d5c912f3740a1e7fa69cefde7e0e0ddacb30ead"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0501170",
    "kind": "arxiv",
    "version": 1
  }
}