Pith Number

pith:YFRRKNGW

pith:2007:YFRRKNGWD2NHOKI4BQR4DWF7SJ

not attested not anchored not stored refs pending

Broad Line Emission in Low-Metallicity Blue Compact Dwarf Galaxies: Evidence for Stellar Wind, Supernova and Possible AGN Activity

(2) University of Virginia, Charlottesville, Kyiv, N. G. Guseva (1) ((1) Main Astronomical Observatory, T. X. Thuan (2), Ukraine, USA), Y. I. Izotov (1)

arxiv:0709.3643 v1 · 2007-09-23 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YFRRKNGWD2NHOKI4BQR4DWF7SJ}

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	2026-05-18T00:14:48.085893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1631534d61e9a77291c0c23c1d8bf9277fa6b5bbd27f31df0ae43ee0b67eb02

Aliases

arxiv: 0709.3643 · arxiv_version: 0709.3643v1 · doi: 10.48550/arxiv.0709.3643 · pith_short_12: YFRRKNGWD2NH · pith_short_16: YFRRKNGWD2NHOKI4 · pith_short_8: YFRRKNGW

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/YFRRKNGWD2NHOKI4BQR4DWF7SJ \
  | 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: c1631534d61e9a77291c0c23c1d8bf9277fa6b5bbd27f31df0ae43ee0b67eb02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a43d0495bd59fc17f2e451c5a5f126efe38cdf995a2f4df0d4ffe9976e188f20",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-09-23T14:21:13Z",
    "title_canon_sha256": "c3421fc7176f1330caad9b85c2488615af6fb837db601971b1cdfa5987e75d5b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0709.3643",
    "kind": "arxiv",
    "version": 1
  }
}