Pith Number

pith:5YYLCGMY

pith:2011:5YYLCGMY4V6OEVVV26G4WRAF4T

not attested not anchored not stored refs pending

An Encoding System to Represent Stellar Spectral Classes in Archival Databases and Catalogs

Christopher Corbally, Inga Kamp, Myron A. Smith, Randall W. Thompson, Richard O. Gray

arxiv:1112.3617 v1 · 2011-12-15 · 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{5YYLCGMY4V6OEVVV26G4WRAF4T}

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	2026-05-18T04:06:18.149942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee30b11998e57ce256b5d78dcb4405e4e817ac83893c644bcc9d41649a96bac1

Aliases

arxiv: 1112.3617 · arxiv_version: 1112.3617v1 · doi: 10.48550/arxiv.1112.3617 · pith_short_12: 5YYLCGMY4V6O · pith_short_16: 5YYLCGMY4V6OEVVV · pith_short_8: 5YYLCGMY

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/5YYLCGMY4V6OEVVV26G4WRAF4T \
  | 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: ee30b11998e57ce256b5d78dcb4405e4e817ac83893c644bcc9d41649a96bac1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fd4af46f19f3baa7d2862ec5be8a0b3d487a911edeb58572a394a45fdb6cc89e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-12-15T19:34:05Z",
    "title_canon_sha256": "4cd0b8ea6a0900221d378b65cf08bd8705dc7f2ee3c86e4c04c1d0c16e041f5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.3617",
    "kind": "arxiv",
    "version": 1
  }
}