Pith Number

pith:EWBAUG5Y

pith:2012:EWBAUG5Y4TOATK6Q75KIW7QTC5

not attested not anchored not stored refs pending

Recalibration of Pagel's method for HII regions considering the thermal structure, the ionization structure, and the depletion of O into dust grains

Antonio Peimbert, Manuel Peimbert, Maria A. Pe\~na-Guerrero

arxiv:1204.4446 v2 · 2012-04-19 · astro-ph.CO · 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{EWBAUG5Y4TOATK6Q75KIW7QTC5}

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	2026-05-18T01:57:48.501680Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25820a1bb8e4dc09abd0ff548b7e1317649a096469bd45e7a97ec16f3c9aeef6

Aliases

arxiv: 1204.4446 · arxiv_version: 1204.4446v2 · doi: 10.48550/arxiv.1204.4446 · pith_short_12: EWBAUG5Y4TOA · pith_short_16: EWBAUG5Y4TOATK6Q · pith_short_8: EWBAUG5Y

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/EWBAUG5Y4TOATK6Q75KIW7QTC5 \
  | 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: 25820a1bb8e4dc09abd0ff548b7e1317649a096469bd45e7a97ec16f3c9aeef6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca2f305b3137e18a4ae3ccd5a9e01e6470d3c674641e4acad6a1f6f332747e2b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-04-19T19:56:48Z",
    "title_canon_sha256": "3739dc24e86e1430dfb0f4979632cfd2e14545ef26816955af9e510533041b39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4446",
    "kind": "arxiv",
    "version": 2
  }
}