Pith Number

pith:FR2EF2VO

pith:2004:FR2EF2VOCLEUCLAOWBNLNJM7L4

not attested not anchored not stored refs pending

Spectroscopy of Seven Cataclysmic Variables with Periods Above Five Hours

(2) The Lawrenceville School), Cynthia J. Taylor (2) ((1) Dartmouth College, John R. Thorstensen (1), William H. Fenton (1)

arxiv:astro-ph/0401316 v1 · 2004-01-15 · 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{FR2EF2VOCLEUCLAOWBNLNJM7L4}

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	2026-05-18T01:07:33.002949Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c7442eaae12c9412c0eb05ab6a59f5f271f83d3ddacbbc0b8cc1f1cb22280ed

Aliases

arxiv: astro-ph/0401316 · arxiv_version: astro-ph/0401316v1 · doi: 10.48550/arxiv.astro-ph/0401316 · pith_short_12: FR2EF2VOCLEU · pith_short_16: FR2EF2VOCLEUCLAO · pith_short_8: FR2EF2VO

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/FR2EF2VOCLEUCLAOWBNLNJM7L4 \
  | 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: 2c7442eaae12c9412c0eb05ab6a59f5f271f83d3ddacbbc0b8cc1f1cb22280ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "652f6a85dafad07714afbe2556980fb3cabce00010dc87ea708aac244ea20534",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-01-15T20:02:55Z",
    "title_canon_sha256": "6a8004ca81d4ccd32bfef910c12dd68420b37458ec61597fe1237d8f98f287ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0401316",
    "kind": "arxiv",
    "version": 1
  }
}