Pith Number

pith:JIQKKVC4

pith:2018:JIQKKVC4MVP3ZWKD4ZGZKLGEQJ

not attested not anchored not stored refs pending

Changes of the optical spectrum of the hypergiant $\rho$ Cas due to a shell ejection in 2013

N.S. Tavolzhanskaya, V.E. Panchuk, V.G. Klochkova

arxiv:1808.00220 v1 · 2018-08-01 · 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{JIQKKVC4MVP3ZWKD4ZGZKLGEQJ}

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	2026-05-18T00:07:05.744049Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a20a5545c655fbcd943e64d952cc482578cf046c6c69e346fd269e5419e71f3

Aliases

arxiv: 1808.00220 · arxiv_version: 1808.00220v1 · doi: 10.48550/arxiv.1808.00220 · pith_short_12: JIQKKVC4MVP3 · pith_short_16: JIQKKVC4MVP3ZWKD · pith_short_8: JIQKKVC4

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/JIQKKVC4MVP3ZWKD4ZGZKLGEQJ \
  | 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: 4a20a5545c655fbcd943e64d952cc482578cf046c6c69e346fd269e5419e71f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea63a6392097477b1b41691f30c41edd0fb8b632f186a8ba7e83c23fa16753ab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-08-01T08:26:11Z",
    "title_canon_sha256": "fd0818380c3c80f5044472fe76a83602c0e9f9bbdec2ce94c138a6a6dcfc9875"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.00220",
    "kind": "arxiv",
    "version": 1
  }
}