Pith Number

pith:ZH7HCQVA

pith:2011:ZH7HCQVAMKP2DU5BFNY4DYRZBX

not attested not anchored not stored refs pending

I Zw 18 as morphological paradigm for rapidly assembling high-z galaxies

(2) Department of Astronomy, Faculdade de Ci\^encias, Goran Ostlin (2) ((1) Centro de Astrof\'isica, Oskar Klein Centre, Polychronis Papaderos (1), Stockholm University), Universidade do Porto

arxiv:1110.4393 v1 · 2011-10-19 · 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{ZH7HCQVAMKP2DU5BFNY4DYRZBX}

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	2026-05-18T02:00:08.323175Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c9fe7142a0629fa1d3a12b71c1e2390dcce08b43d2d9421e0de5c72398c1211e

Aliases

arxiv: 1110.4393 · arxiv_version: 1110.4393v1 · doi: 10.48550/arxiv.1110.4393 · pith_short_12: ZH7HCQVAMKP2 · pith_short_16: ZH7HCQVAMKP2DU5B · pith_short_8: ZH7HCQVA

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/ZH7HCQVAMKP2DU5BFNY4DYRZBX \
  | 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: c9fe7142a0629fa1d3a12b71c1e2390dcce08b43d2d9421e0de5c72398c1211e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77aec683078044e9749353118a1049fc15c439280e897d7a742f2a165be84a96",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-10-19T20:22:02Z",
    "title_canon_sha256": "f7145918279c1fe79723a50d30f21499ac4733479281f143da1d6122b8512343"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.4393",
    "kind": "arxiv",
    "version": 1
  }
}