Pith Number

pith:MY4UDUR4

pith:2018:MY4UDUR4SRLQCEHY7FYKKWABC2

not attested not anchored not stored refs pending

Stellar activity with LAMOST - II. Chromospheric activity in open clusters

Gang Zhao, Jing-Kun Zhao, Xiang-Song Fang, Yerra Bharat Kumar

arxiv:1801.07410 v1 · 2018-01-23 · 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{MY4UDUR4SRLQCEHY7FYKKWABC2}

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	2026-05-18T00:24:54.191218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

663941d23c94570110f8f970a5580116ba917408f0d70c82b08b828cb6c4fbd4

Aliases

arxiv: 1801.07410 · arxiv_version: 1801.07410v1 · doi: 10.48550/arxiv.1801.07410 · pith_short_12: MY4UDUR4SRLQ · pith_short_16: MY4UDUR4SRLQCEHY · pith_short_8: MY4UDUR4

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/MY4UDUR4SRLQCEHY7FYKKWABC2 \
  | 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: 663941d23c94570110f8f970a5580116ba917408f0d70c82b08b828cb6c4fbd4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5461c7ac7f5e72d8e847dc2b60fb46597756c2d0911f4678bd30457ca7de0f3f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-01-23T07:04:09Z",
    "title_canon_sha256": "e8090fea0edb5e7a102f750b57163d29654c872ff9c2ec3d0f405d8e648df7c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07410",
    "kind": "arxiv",
    "version": 1
  }
}