Pith Number

pith:23F7YHA2

pith:2019:23F7YHA2EXDDLPGAYNMB2DHJLT

not attested not anchored not stored refs pending

YZ Phe: an active contact binary with variation of the O'Connell effect and orbital period change

B. Soonthornthum, D. E. Reichart, J. B. Haislip, J. Zhang, L.-J. Li, S.-B. Qian, S. Poshyachinda, T. Sarotsakulchai, V. V. Kouprianov, X. Zhou

arxiv:1901.00237 v2 · 2019-01-02 · 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{23F7YHA2EXDDLPGAYNMB2DHJLT}

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	2026-05-17T23:40:33.810773Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6cbfc1c1a25c635bcc0c3581d0ce95ce67c2419a0db44dae89354ba8774980d

Aliases

arxiv: 1901.00237 · arxiv_version: 1901.00237v2 · doi: 10.48550/arxiv.1901.00237 · pith_short_12: 23F7YHA2EXDD · pith_short_16: 23F7YHA2EXDDLPGA · pith_short_8: 23F7YHA2

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/23F7YHA2EXDDLPGAYNMB2DHJLT \
  | 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: d6cbfc1c1a25c635bcc0c3581d0ce95ce67c2419a0db44dae89354ba8774980d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2e70c9b92c81e2a3ca2ee29cf32466d6b0fb76ef28c647f62067a8d1b863036",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-01-02T01:53:29Z",
    "title_canon_sha256": "bfbe41a6588ae8db4a9d4b80a32b124d088dc69c678a2136afd6379e79d31232"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.00237",
    "kind": "arxiv",
    "version": 2
  }
}