Pith Number

pith:W43KVFJQ

pith:2021:W43KVFJQ2P4TYKZCPTKIQO2XRR

not attested not anchored not stored refs pending

Orbital and atmospheric parameters of two wide O-type subdwarf binaries: BD$-$11$^{\rm{o}}$162 and Feige 80

Andrew Tkachenko, Francisco Molina, Hans Van Winckel, Joris Vos, Maja Vu\v{c}kovi\'c, P\'eter N\'emeth, Roy {\O}stensen

arxiv:2110.14339 v1 · 2021-10-27 · 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{W43KVFJQ2P4TYKZCPTKIQO2XRR}

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	2026-07-05T03:55:04.493718Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b736aa9530d3f93c2b227cd4883b578c5b96ec43cce5e4ae560c7d1501835cdd

Aliases

arxiv: 2110.14339 · arxiv_version: 2110.14339v1 · doi: 10.48550/arxiv.2110.14339 · pith_short_12: W43KVFJQ2P4T · pith_short_16: W43KVFJQ2P4TYKZC · pith_short_8: W43KVFJQ

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/W43KVFJQ2P4TYKZCPTKIQO2XRR \
  | 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: b736aa9530d3f93c2b227cd4883b578c5b96ec43cce5e4ae560c7d1501835cdd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6530ccca23bbe4caa62ec46037f094e29addc29aade1922b5f959251dcfd9ba1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-10-27T10:43:43Z",
    "title_canon_sha256": "48b1579b98ff565baefbc20f3d9d065545c10aa71df6fcc32118cb344be0670a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.14339",
    "kind": "arxiv",
    "version": 1
  }
}