Pith Number

pith:JCGND72K

pith:2009:JCGND72KUUBVSYMFUJKI7HEUQQ

not attested not anchored not stored refs pending

HI Observations of Five Groups of Galaxies

A. Stilp, E. Freeland, E. Wilcots

arxiv:0905.3907 v1 · 2009-05-24 · 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{JCGND72KUUBVSYMFUJKI7HEUQQ}

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	2026-05-18T02:13:37.824553Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

488cd1ff4aa503596185a2548f9c94840ff0a81a070a8c58b1e825619765a981

Aliases

arxiv: 0905.3907 · arxiv_version: 0905.3907v1 · doi: 10.48550/arxiv.0905.3907 · pith_short_12: JCGND72KUUBV · pith_short_16: JCGND72KUUBVSYMF · pith_short_8: JCGND72K

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/JCGND72KUUBVSYMFUJKI7HEUQQ \
  | 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: 488cd1ff4aa503596185a2548f9c94840ff0a81a070a8c58b1e825619765a981

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c89a57d9445e2a74ce183c021eead408c9681f5f2794414d344cc02462ffab5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-05-24T15:29:09Z",
    "title_canon_sha256": "71b2b6b6428a6d7f8d888d217c33104da0cdbc095534d154e35f82aed33bcf74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3907",
    "kind": "arxiv",
    "version": 1
  }
}