Pith Number

pith:BEQYX3TS

pith:2019:BEQYX3TS5IP65K7XBKFHTRG7Y7

not attested not anchored not stored refs pending

A strange phenomenon of XZ Andromedae: two Keplerian periods with a 1:3 ratio

Jin-Zhao Yuan, Sheng-Bang Qian

arxiv:1904.07373 v1 · 2019-04-16 · 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{BEQYX3TS5IP65K7XBKFHTRG7Y7}

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	2026-05-17T23:48:28.748945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09218bee72ea1feeabf70a8a79c4dfc7e50e63585c21d6fc42a6f393be898ac3

Aliases

arxiv: 1904.07373 · arxiv_version: 1904.07373v1 · doi: 10.48550/arxiv.1904.07373 · pith_short_12: BEQYX3TS5IP6 · pith_short_16: BEQYX3TS5IP65K7X · pith_short_8: BEQYX3TS

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/BEQYX3TS5IP65K7XBKFHTRG7Y7 \
  | 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: 09218bee72ea1feeabf70a8a79c4dfc7e50e63585c21d6fc42a6f393be898ac3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0e6bf2478792b9bae223eeeaaa3d302eb7dea15789aa39f3e664bba5619845b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-04-16T00:05:08Z",
    "title_canon_sha256": "dcc6dd6c39667a8e1963a0b6784cb919843448967ea70605cc6865a56527e888"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.07373",
    "kind": "arxiv",
    "version": 1
  }
}