Pith Number

pith:YTW4E3B5

pith:2013:YTW4E3B53FYLBYTD4FCBJFVHN3

not attested not anchored not stored refs pending

Chromospheric variabilities of M active stars based on Guoshoujing Telescope

A. L. Luo, A. Y. Zhou, H. Wu, J. K. Zhao, J. R. Shi, Lamost Collaboration, L. Y. Zhang, Q. F. Pi, X. S. Fang, Y. H. Zhao

arxiv:1307.4645 v1 · 2013-07-17 · 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{YTW4E3B53FYLBYTD4FCBJFVHN3}

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	2026-05-18T01:48:43.423586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4edc26c3dd970b0e263e1441496a76ed470d8d048223a866bb05dd56336fc0f

Aliases

arxiv: 1307.4645 · arxiv_version: 1307.4645v1 · doi: 10.48550/arxiv.1307.4645 · pith_short_12: YTW4E3B53FYL · pith_short_16: YTW4E3B53FYLBYTD · pith_short_8: YTW4E3B5

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/YTW4E3B53FYLBYTD4FCBJFVHN3 \
  | 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: c4edc26c3dd970b0e263e1441496a76ed470d8d048223a866bb05dd56336fc0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f1372763b51c019ba77a8159104621808b9b1892d6f47bc81e4edad8311c47cc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-07-17T14:21:56Z",
    "title_canon_sha256": "3a4e6b3f29d7b6b3dabeec8fee36d3c897eaf2e3ef2064030e64230bff7687ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.4645",
    "kind": "arxiv",
    "version": 1
  }
}