Pith Number

pith:J2WM4DED

pith:2018:J2WM4DEDGSO774BGI7RV6W7PI5

not attested not anchored not stored refs pending

A NLTE line formation for neutral and singly-ionised calcium in model atmospheres of B-F stars

Lyudmila Mashonkina, Tatyana Ryabchikova, Tatyana Sitnova

arxiv:1803.11020 v1 · 2018-03-29 · 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{J2WM4DEDGSO774BGI7RV6W7PI5}

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	2026-05-18T00:18:48.834672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4eacce0c83349dfff02647e35f5bef47585742dc2be529510eb14ce4fd971460

Aliases

arxiv: 1803.11020 · arxiv_version: 1803.11020v1 · doi: 10.48550/arxiv.1803.11020 · pith_short_12: J2WM4DEDGSO7 · pith_short_16: J2WM4DEDGSO774BG · pith_short_8: J2WM4DED

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/J2WM4DEDGSO774BGI7RV6W7PI5 \
  | 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: 4eacce0c83349dfff02647e35f5bef47585742dc2be529510eb14ce4fd971460

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a74c70ca4a65c6f8aa81e36cf7022e3e5a625ba3b8dc99ea1d8d0d41680b6022",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-03-29T12:07:29Z",
    "title_canon_sha256": "481114ee6c26f4c8d67f05c92af17eb131d40db530de9d76143644564e858048"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.11020",
    "kind": "arxiv",
    "version": 1
  }
}