Pith Number

pith:7SMKHVU3

pith:2017:7SMKHVU3MK4FGLPMMFDFC37C5F

not attested not anchored not stored refs pending

Spectral analysis of four surprisingly similar hot hydrogen-rich subdwarf O stars

A. Irrgang, E. M. Green, G. Fontaine, M. Latour, P. Chayer

arxiv:1710.06716 v1 · 2017-10-18 · 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{7SMKHVU3MK4FGLPMMFDFC37C5F}

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	2026-05-18T00:25:16.684284Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc98a3d69b62b8532dec6146516fe2e95ac7d40a39e2c988747629b3ef902815

Aliases

arxiv: 1710.06716 · arxiv_version: 1710.06716v1 · doi: 10.48550/arxiv.1710.06716 · pith_short_12: 7SMKHVU3MK4F · pith_short_16: 7SMKHVU3MK4FGLPM · pith_short_8: 7SMKHVU3

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/7SMKHVU3MK4FGLPMMFDFC37C5F \
  | 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: fc98a3d69b62b8532dec6146516fe2e95ac7d40a39e2c988747629b3ef902815

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cf8651aaee52bdf2e5aad0f734f07c2cd1075cdd28b1666f1b23ed1c161a6f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-10-18T13:13:03Z",
    "title_canon_sha256": "414f48916e9c291a37b9f90e93493ce8d4b78ca27ae1b7e1af38cb9f0c6807bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.06716",
    "kind": "arxiv",
    "version": 1
  }
}