Pith Number

pith:WLCISVXY

pith:2015:WLCISVXYYZBV5SC4Q5VXS5ZGQ5

not attested not anchored not stored refs pending

A NLTE analysis of the hot subdwarf O star BD+28 4211. II. The optical spectrum

E. M. Green, G. Fontaine, M. Latour, P. Brassard

arxiv:1504.06417 v1 · 2015-04-24 · 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{WLCISVXYYZBV5SC4Q5VXS5ZGQ5}

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	2026-05-18T01:40:58.343923Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2c48956f8c6435ec85c876b79772687737e2b73678f347e1b7b0e2a654ae8e7

Aliases

arxiv: 1504.06417 · arxiv_version: 1504.06417v1 · doi: 10.48550/arxiv.1504.06417 · pith_short_12: WLCISVXYYZBV · pith_short_16: WLCISVXYYZBV5SC4 · pith_short_8: WLCISVXY

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/WLCISVXYYZBV5SC4Q5VXS5ZGQ5 \
  | 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: b2c48956f8c6435ec85c876b79772687737e2b73678f347e1b7b0e2a654ae8e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1133b2fc70234e177c966ffb7617cbb5a8f5ab74ad3a197f3feac84f4823857",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-04-24T08:10:23Z",
    "title_canon_sha256": "97572c14f68e6c19154680ae4d9e53df070360d5c5909e4011bfde2bd80ee249"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06417",
    "kind": "arxiv",
    "version": 1
  }
}