Pith Number

pith:2QYEDAD4

pith:2012:2QYEDAD45MCEA3QQAVXD5NMMS7

not attested not anchored not stored refs pending

Detection of the 128 day radial velocity variations in the supergiant {\alpha} Persei. Rotational modulations, pulsations, or a planet?

Byeong-Cheol Lee, David. E. Mkrtichian, Inwoo Han, Kang-Min Kim, Myeong-Gu Park

arxiv:1205.3840 v1 · 2012-05-17 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2QYEDAD45MCEA3QQAVXD5NMMS7}

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	2026-05-18T01:57:26.199982Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d43041807ceb04406e10056e3eb58c97c85aea0611fefb791a0fe58e69258fc2

Aliases

arxiv: 1205.3840 · arxiv_version: 1205.3840v1 · doi: 10.48550/arxiv.1205.3840 · pith_short_12: 2QYEDAD45MCE · pith_short_16: 2QYEDAD45MCEA3QQ · pith_short_8: 2QYEDAD4

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/2QYEDAD45MCEA3QQAVXD5NMMS7 \
  | 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: d43041807ceb04406e10056e3eb58c97c85aea0611fefb791a0fe58e69258fc2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3631b2617d23cadb6cc0b368264dc1f18733734d685af810297a494a81bbbae6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2012-05-17T02:30:43Z",
    "title_canon_sha256": "318ddccc2ebf9ddd2911dadc31956ee5000b46fc41166977679269bfd110ef3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.3840",
    "kind": "arxiv",
    "version": 1
  }
}