Pith Number

pith:QCWRRGC5

pith:2018:QCWRRGC5RNWNZUSKD3NGFFRP3H

not attested not anchored not stored refs pending

FIT{\it spec}: a new algorithm for the automated fit of synthetic stellar spectra for OB stars

Anabel Arrieta, Celia R. Fierro-Santill\'an, Jaime Klapp, Janos Zsarg\'o, Leonardo Di G. Sigalotti, Lorena Arias, Santiago A. D\'iaz-Azuara

arxiv:1804.00089 v1 · 2018-03-31 · 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{QCWRRGC5RNWNZUSKD3NGFFRP3H}

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	2026-05-18T00:13:26.626092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80ad18985d8b6cdcd24a1eda62962fd9f708f1e1b33efcc00a10ab48daa1684f

Aliases

arxiv: 1804.00089 · arxiv_version: 1804.00089v1 · doi: 10.48550/arxiv.1804.00089 · pith_short_12: QCWRRGC5RNWN · pith_short_16: QCWRRGC5RNWNZUSK · pith_short_8: QCWRRGC5

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/QCWRRGC5RNWNZUSKD3NGFFRP3H \
  | 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: 80ad18985d8b6cdcd24a1eda62962fd9f708f1e1b33efcc00a10ab48daa1684f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5dfaf5cecf92da8a61091ada9119f45d3a37d21a2494fed3650e898f992d8e5c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-03-31T00:08:13Z",
    "title_canon_sha256": "fb1a433920c845b7b2ac93be26f95f99aa06a0fdae7e46a790e3acbf4f25d329"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.00089",
    "kind": "arxiv",
    "version": 1
  }
}