Pith Number

pith:4NQXC2U3

pith:2019:4NQXC2U35ETISN2J43DYYMEFGZ

not attested not anchored not stored refs pending

Warm and cool starspots with opposite polarities. A high-resolution Zeeman-Doppler-Imaging study of II Pegasi with PEPSI

I. V. Ilyin, K. G. Strassmeier, T. A. Carroll

arxiv:1902.11201 v1 · 2019-02-28 · 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{4NQXC2U35ETISN2J43DYYMEFGZ}

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	2026-05-17T23:46:12.182988Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e361716a9be926893749e6c78c3085367cf5e269f5de80b29ba894197a8fc055

Aliases

arxiv: 1902.11201 · arxiv_version: 1902.11201v1 · doi: 10.48550/arxiv.1902.11201 · pith_short_12: 4NQXC2U35ETI · pith_short_16: 4NQXC2U35ETISN2J · pith_short_8: 4NQXC2U3

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/4NQXC2U35ETISN2J43DYYMEFGZ \
  | 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: e361716a9be926893749e6c78c3085367cf5e269f5de80b29ba894197a8fc055

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48b3b13bd2b44f3288a591e3dba8f058348cc561e40d8b5152215dca44acb092",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-02-28T16:39:47Z",
    "title_canon_sha256": "1cad70e22436f01ca74be1ef131d272d57e557308174f6bde9a2484acac1ea8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.11201",
    "kind": "arxiv",
    "version": 1
  }
}