Pith Number

pith:6W4CKBX2

pith:2009:6W4CKBX2GDNBHQJU2MKJ5KBNQO

not attested not anchored not stored refs pending

The nature of the line profile variability in the spectrum of the massive binary HD 152219

H. Sana

arxiv:0905.1262 v2 · 2009-05-08 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6W4CKBX2GDNBHQJU2MKJ5KBNQO}

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	2026-05-18T02:13:46.369675Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5b82506fa30da13c134d3149ea82d83a47a341fa5e0b0a952eec7221b8eeb49

Aliases

arxiv: 0905.1262 · arxiv_version: 0905.1262v2 · doi: 10.48550/arxiv.0905.1262 · pith_short_12: 6W4CKBX2GDNB · pith_short_16: 6W4CKBX2GDNBHQJU · pith_short_8: 6W4CKBX2

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/6W4CKBX2GDNBHQJU2MKJ5KBNQO \
  | 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: f5b82506fa30da13c134d3149ea82d83a47a341fa5e0b0a952eec7221b8eeb49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5a7c3410df45b7264d6313303ecc4bbc76d076bca8dfe64579e6737feabce3b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-05-08T14:11:50Z",
    "title_canon_sha256": "163f7ae1df904d91f5d3351a7c3b76ee53b23f9e50a3ab14c5f2619f3a563898"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.1262",
    "kind": "arxiv",
    "version": 2
  }
}