Pith Number

pith:QMKCZUTK

pith:2018:QMKCZUTKBJRFID5DTQZKS3TJBK

not attested not anchored not stored refs pending

Effective temperature of ionizing stars of extragalactic HII regions -- II: nebular parameter relations based on CALIFA data

A. C. Krabbe, G. F. Hagele, I. A. Zinchenko, M. V. Cardaci, O. L. Dors

arxiv:1810.09018 v2 · 2018-10-21 · 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{QMKCZUTKBJRFID5DTQZKS3TJBK}

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	2026-05-17T23:58:01.933442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83142cd26a0a62540fa39c32a96e690ab05ddbd08412d28ee246c9812f1575c4

Aliases

arxiv: 1810.09018 · arxiv_version: 1810.09018v2 · doi: 10.48550/arxiv.1810.09018 · pith_short_12: QMKCZUTKBJRF · pith_short_16: QMKCZUTKBJRFID5D · pith_short_8: QMKCZUTK

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/QMKCZUTKBJRFID5DTQZKS3TJBK \
  | 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: 83142cd26a0a62540fa39c32a96e690ab05ddbd08412d28ee246c9812f1575c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "913e36bc77642025c08b06827bf383e7eda06cc679479384b1a2ca3130ce51bb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-10-21T20:13:51Z",
    "title_canon_sha256": "cdad7a65e307a0082d9aaa8645fa63e54799c8f9585a367643cc3fbe60f1fbdd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.09018",
    "kind": "arxiv",
    "version": 2
  }
}