Pith Number

pith:XZ2S6YMQ

pith:2015:XZ2S6YMQFAXI54DHFPEZ7EBL67

not attested not anchored not stored refs pending

The extended HeII4686-emitting region in IZw18 unveiled: clues for peculiar ionizing sources

C. Kehrig, D. Kunth, E. Perez-Montero, F. Durret, F.M. Bayo, J. Brinchmann, J. Iglesias-Paramo, J.M. Vilchez

arxiv:1502.00522 v1 · 2015-02-02 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XZ2S6YMQFAXI54DHFPEZ7EBL67}

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	2026-05-18T01:41:05.325246Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be752f6190282e8ef0672bc99f902bf7dfcfb87b37a9ab47f400084fb151b00f

Aliases

arxiv: 1502.00522 · arxiv_version: 1502.00522v1 · doi: 10.48550/arxiv.1502.00522 · pith_short_12: XZ2S6YMQFAXI · pith_short_16: XZ2S6YMQFAXI54DH · pith_short_8: XZ2S6YMQ

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/XZ2S6YMQFAXI54DHFPEZ7EBL67 \
  | 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: be752f6190282e8ef0672bc99f902bf7dfcfb87b37a9ab47f400084fb151b00f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1392317f6780b16e18359ab5cbe8a15aa0809163e119e8f1ea17c19b07f5050",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-02-02T15:42:25Z",
    "title_canon_sha256": "70278aff3d1e855aa3ccc235909349789133634d523e7d707245b3024fcfd540"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.00522",
    "kind": "arxiv",
    "version": 1
  }
}