Pith Number

pith:PQOWR2SS

pith:2018:PQOWR2SSSWGOFFQUP4CM5266MJ

not attested not anchored not stored refs pending

HD 38858: a solar type star with a $\sim$10.8 yr activity cycle. Searching for Balmer and metallic line variations

A. Buccino, C. Saffe, F. M. L\'opez, J. F. Gonz\'alez, M. Flores, M. Jaque Arancibia, P. Miquelarena, R.V Iba\~nez Bustos

arxiv:1809.05581 v1 · 2018-09-14 · 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{PQOWR2SSSWGOFFQUP4CM5266MJ}

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	2026-05-17T23:59:49.818643Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c1d68ea52958ce296147f04ceebde62683c4f143f98906ba580d9ae20594c6e

Aliases

arxiv: 1809.05581 · arxiv_version: 1809.05581v1 · doi: 10.48550/arxiv.1809.05581 · pith_short_12: PQOWR2SSSWGO · pith_short_16: PQOWR2SSSWGOFFQU · pith_short_8: PQOWR2SS

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/PQOWR2SSSWGOFFQUP4CM5266MJ \
  | 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: 7c1d68ea52958ce296147f04ceebde62683c4f143f98906ba580d9ae20594c6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f329feda61106f6bab4bd59e34eba54e69f5024a8f6037e0fe6912039caf7ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-09-14T20:40:39Z",
    "title_canon_sha256": "4620c969bfd7dfa123756341b89626e89303432cfe5c4a76bb1d6c264bc7a213"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05581",
    "kind": "arxiv",
    "version": 1
  }
}