Pith Number

pith:XZNGQ62T

pith:2016:XZNGQ62T4HL4KGK5LQE5E24TOH

not attested not anchored not stored refs pending

Spectral classification and properties of the O Vz stars in the Galactic O-Star Spectroscopic Survey (GOSSS)

Alfredo Sota, Amparo Marco, Artemio Herrero, Carolina Sabin-Sanjulian, Emilio J. Alfaro, Ignacio Negueruela, Jesus Maiz Apellaniz, Joao R. S. Leao, Julia I. Arias, Nidia I. Morrell, Nolan R. Walborn, Roberto C. Gamen, Rodolfo H. Barba, Sergio Simon-Diaz

arxiv:1604.03842 v1 · 2016-04-13 · 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{XZNGQ62T4HL4KGK5LQE5E24TOH}

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	2026-05-18T01:10:49.852524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be5a687b53e1d7c5195d5c09d26b9371e7b1400966417d76c2d53b2952057174

Aliases

arxiv: 1604.03842 · arxiv_version: 1604.03842v1 · doi: 10.48550/arxiv.1604.03842 · pith_short_12: XZNGQ62T4HL4 · pith_short_16: XZNGQ62T4HL4KGK5 · pith_short_8: XZNGQ62T

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/XZNGQ62T4HL4KGK5LQE5E24TOH \
  | 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: be5a687b53e1d7c5195d5c09d26b9371e7b1400966417d76c2d53b2952057174

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bef4f61492f85aa7ea0314869ee78b459b102de1c949650117e6365d88dd5b4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-04-13T15:48:12Z",
    "title_canon_sha256": "28960b08103cf687982c2ff6dfae934c868ae9ec610affa19aa651f3bfa27269"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.03842",
    "kind": "arxiv",
    "version": 1
  }
}