Pith Number

pith:Y3OPI6K2

pith:2018:Y3OPI6K2MH526MDDP6GMR2OOGY

not attested not anchored not stored refs pending

A case study of hurdle and generalized additive models in astronomy: the escape of ionizing radiation

B. Ciardi, C. Dalla Vecchia, J.-P. Paardekooper, M. W. Hattab, R. S. de Souza, S. Khochfar

arxiv:1805.07435 v2 · 2018-05-18 · astro-ph.IM · astro-ph.CO · stat.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y3OPI6K2MH526MDDP6GMR2OOGY}

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	2026-05-17T23:56:29.813579Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6dcf4795a61fbaf30637f8cc8e9ce36023ffb0bb5aebcbdfc9923a5cb7398db

Aliases

arxiv: 1805.07435 · arxiv_version: 1805.07435v2 · doi: 10.48550/arxiv.1805.07435 · pith_short_12: Y3OPI6K2MH52 · pith_short_16: Y3OPI6K2MH526MDD · pith_short_8: Y3OPI6K2

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/Y3OPI6K2MH526MDDP6GMR2OOGY \
  | 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: c6dcf4795a61fbaf30637f8cc8e9ce36023ffb0bb5aebcbdfc9923a5cb7398db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e074c569154458cab7d8cb5d1ae69fe045899b38256c4cd4500665cd4608aeae",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "stat.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-05-18T20:40:02Z",
    "title_canon_sha256": "5ffb39e3b7fb84fe9a51e7161473dfcf6dd98b2e7bdcd725995a9b867c503b17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.07435",
    "kind": "arxiv",
    "version": 2
  }
}