Pith Number

pith:GPCS2VYI

pith:2011:GPCS2VYI7PZCJVLBJXE5NH7QL7

not attested not anchored not stored refs pending

Spectroscopic and physical parameters of Galactic O-type stars. I. Effects of rotation and spectral resolving power in the spectral classification of dwarfs and giants

A. Herrero, J. Puls, N. Markova, S. Scuderi, S. Simon-Diaz

arxiv:1103.3357 v1 · 2011-03-17 · 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{GPCS2VYI7PZCJVLBJXE5NH7QL7}

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	2026-05-18T02:02:50.404136Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

33c52d5708fbf224d5614dc9d69ff05fe401544cc6c9fe350fec11d78da384fc

Aliases

arxiv: 1103.3357 · arxiv_version: 1103.3357v1 · doi: 10.48550/arxiv.1103.3357 · pith_short_12: GPCS2VYI7PZC · pith_short_16: GPCS2VYI7PZCJVLB · pith_short_8: GPCS2VYI

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/GPCS2VYI7PZCJVLBJXE5NH7QL7 \
  | 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: 33c52d5708fbf224d5614dc9d69ff05fe401544cc6c9fe350fec11d78da384fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "199ea6bc30d3531b7c8fc1213018b993e6e70063498c178a7ac9f1f51c12f9c3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-03-17T08:34:31Z",
    "title_canon_sha256": "7fa1d3e02b4328ef6d4731d8e4878176ef94da760c0420a0b54ad651ce30b02a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.3357",
    "kind": "arxiv",
    "version": 1
  }
}