Pith Number

pith:WIGHBAU2

pith:2020:WIGHBAU24ERRYOEPBYAUEWNMIW

not attested not anchored not stored refs pending

Spectral classification of B stars: The empirical sequence using SDSS-IV/APOGEE near-IR data

Alexandre Rom\'an-L\'opes, Anibal Garc\'ia, Carlos G. Rom\'an-Zu\~niga, Guy S. Stringfellow, Jes\'us Hernandez, Jinyoung Serena Kim, Keivan Stassun, Valeria G. Ram\'irez-Preciado

arxiv:2003.09469 v1 · 2020-03-20 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WIGHBAU24ERRYOEPBYAUEWNMIW}

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	2026-07-05T01:00:41.846594Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b20c70829ae1231c388f0e014259ac45b7576a8aa596963bf9d345417e4e5fd6

Aliases

arxiv: 2003.09469 · arxiv_version: 2003.09469v1 · doi: 10.48550/arxiv.2003.09469 · pith_short_12: WIGHBAU24ERR · pith_short_16: WIGHBAU24ERRYOEP · pith_short_8: WIGHBAU2

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/WIGHBAU24ERRYOEPBYAUEWNMIW \
  | 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: b20c70829ae1231c388f0e014259ac45b7576a8aa596963bf9d345417e4e5fd6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c22480b82d4c9882259d97a28e76f63b2a8558d7f7146ac6b50ee245bbc4fbb",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-03-20T19:19:03Z",
    "title_canon_sha256": "1c0b4f950a411f9efc8da3cf4d8ad411dc8c7596b165717a0e02ec0cf942ea37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.09469",
    "kind": "arxiv",
    "version": 1
  }
}