Pith Number

pith:WLGFT4EF

pith:2018:WLGFT4EF4VP6XTAQ3EKCFQMAWT

not attested not anchored not stored refs pending

Spectral observations of X Persei: Connection between H-alpha and X-ray emission

D. Marchev, K. A. Stoyanov, N. I. Petrov, R. Zamanov, U. Wolter

arxiv:1811.09162 v2 · 2018-11-22 · astro-ph.SR · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WLGFT4EF4VP6XTAQ3EKCFQMAWT}

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	2026-05-17T23:53:24.179592Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2cc59f085e55febcc10d91422c180b4e85f4ac6a2b89c52909aafbf5ad9373e

Aliases

arxiv: 1811.09162 · arxiv_version: 1811.09162v2 · doi: 10.48550/arxiv.1811.09162 · pith_short_12: WLGFT4EF4VP6 · pith_short_16: WLGFT4EF4VP6XTAQ · pith_short_8: WLGFT4EF

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/WLGFT4EF4VP6XTAQ3EKCFQMAWT \
  | 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: b2cc59f085e55febcc10d91422c180b4e85f4ac6a2b89c52909aafbf5ad9373e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7485c15c8c3f9b4c1f6697792e4c7cfd7b4273c8a8f8e1fc62a5a3ca5fde8ea9",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-11-22T13:20:36Z",
    "title_canon_sha256": "ced4bb7b563fbec355a184439a99a0b4572071f2cada9033875e01ec35eb9c7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.09162",
    "kind": "arxiv",
    "version": 2
  }
}