Pith Number

pith:PRXQSSSR

pith:2004:PRXQSSSROGWPDMAHG5UUGJGYCU

not attested not anchored not stored refs pending

Contamination and exclusion in the sigma Orionis young group

(2) Keele University), Ben Burningham (1), R. D. Jeffries (2) ((1) University of Exeter, S. P. Littlefair (1), Tim Naylor (1)

arxiv:astro-ph/0411418 v1 · 2004-11-15 · 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{PRXQSSSROGWPDMAHG5UUGJGYCU}

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	2026-05-18T01:07:31.917520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c6f094a5171acf1b00737694324d81535c5854699b03d2a676669c45feff071

Aliases

arxiv: astro-ph/0411418 · arxiv_version: astro-ph/0411418v1 · doi: 10.48550/arxiv.astro-ph/0411418 · pith_short_12: PRXQSSSROGWP · pith_short_16: PRXQSSSROGWPDMAH · pith_short_8: PRXQSSSR

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/PRXQSSSROGWPDMAHG5UUGJGYCU \
  | 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: 7c6f094a5171acf1b00737694324d81535c5854699b03d2a676669c45feff071

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da1c47405f798b89950887d31167277aa3491009526b280a031e6d5481664600",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-11-15T18:23:08Z",
    "title_canon_sha256": "ac3e2bb77964480ab5f84ac3c326c9c348ee2f4cf38c3e920e3dc5064ea2f9df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0411418",
    "kind": "arxiv",
    "version": 1
  }
}