Pith Number

pith:WTWYKW5I

pith:2012:WTWYKW5IT32S2AY6AM4TKC3VMR

not attested not anchored not stored refs pending

The star formation histories of Hickson compact group galaxies

(2) Depto. de Astronomia de la Univ. de Guanajuato, A. Del Olmo (1), IAA-CSIC, I. Plauchu-Frayn (1), J. P. Torres-Papaqui (2) ((1) Instituto de Astrofisica de Andalucia, Mexico), R. Coziol (2), Spain

arxiv:1208.1756 v1 · 2012-08-08 · 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{WTWYKW5IT32S2AY6AM4TKC3VMR}

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	2026-05-18T01:55:17.444151Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4ed855ba89ef52d031e0339350b75644d3ee4374f6433b450f7f693bc8d3fba

Aliases

arxiv: 1208.1756 · arxiv_version: 1208.1756v1 · doi: 10.48550/arxiv.1208.1756 · pith_short_12: WTWYKW5IT32S · pith_short_16: WTWYKW5IT32S2AY6 · pith_short_8: WTWYKW5I

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/WTWYKW5IT32S2AY6AM4TKC3VMR \
  | 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: b4ed855ba89ef52d031e0339350b75644d3ee4374f6433b450f7f693bc8d3fba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fc110169ee939b64e79c87e2677995c8773b513c28f179d2f2342f700cf0e21",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-08-08T19:59:35Z",
    "title_canon_sha256": "078e3242bdd6578f8548740059a3df79b9f21cfcf9b938b32eb85f5b5ff4dac1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.1756",
    "kind": "arxiv",
    "version": 1
  }
}