Pith Number

pith:6KCKKBFC

pith:2018:6KCKKBFCHZGDXLUCAFKUBOEHVX

not attested not anchored not stored refs pending

How common is LBV S Dor variability at low metallicity?

J. S. Vink, M. Fraser, P. L. Dufton, V. M. Kalari

arxiv:1807.01309 v1 · 2018-07-03 · astro-ph.SR · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6KCKKBFCHZGDXLUCAFKUBOEHVX}

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	2026-05-18T00:03:46.320227Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f284a504a23e4c3bae82015540b887adfd3734ba997e3144f1d3ec3c6138f539

Aliases

arxiv: 1807.01309 · arxiv_version: 1807.01309v1 · doi: 10.48550/arxiv.1807.01309 · pith_short_12: 6KCKKBFCHZGD · pith_short_16: 6KCKKBFCHZGDXLUC · pith_short_8: 6KCKKBFC

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/6KCKKBFCHZGDXLUCAFKUBOEHVX \
  | 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: f284a504a23e4c3bae82015540b887adfd3734ba997e3144f1d3ec3c6138f539

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a12bff12a30794cab4f913b181f890a47835669b218f7600990d7743569b074b",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-07-03T17:51:13Z",
    "title_canon_sha256": "9fe55a1dbe41fd590019dbfc40458fec8583220657a15997020b60aacb1c550d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01309",
    "kind": "arxiv",
    "version": 1
  }
}