Pith Number

pith:BHTG5LW4

pith:2009:BHTG5LW4EI77VWBUDQ2ILTY24V

not attested not anchored not stored refs pending

PopStar Evolutionary Synthesis Models II: Optical emission-line spectra from Giant H{\sc ii} regions

A.I. D\'iaz, M.L. Garc\'ia-Vargas, M.L. Mart\'in-Manj\'on, M. Moll\'a

arxiv:0912.4730 v1 · 2009-12-23 · 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{BHTG5LW4EI77VWBUDQ2ILTY24V}

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	2026-05-18T02:10:14.021907Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09e66eaedc223ffad8341c3485cf1ae555dd74f85ad4af1d10854f136845d4c0

Aliases

arxiv: 0912.4730 · arxiv_version: 0912.4730v1 · doi: 10.48550/arxiv.0912.4730 · pith_short_12: BHTG5LW4EI77 · pith_short_16: BHTG5LW4EI77VWBU · pith_short_8: BHTG5LW4

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/BHTG5LW4EI77VWBUDQ2ILTY24V \
  | 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: 09e66eaedc223ffad8341c3485cf1ae555dd74f85ad4af1d10854f136845d4c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42d4321e671fd56474ae9ecc364a9f23d8c958f5d5c17aaa02472af58c405b00",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-23T21:35:33Z",
    "title_canon_sha256": "08c9216b79ff4699810cbe5ea76ee16f80694afa3729dc9ef3ff7d2214b1b2ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4730",
    "kind": "arxiv",
    "version": 1
  }
}