Pith Number

pith:IT7V2ZGF

pith:2019:IT7V2ZGFYX3JXR4HG73ZBWN7YC

not attested not anchored not stored refs pending

Close-in sub-Neptunes reveal the past rotation history of their host stars: atmospheric evolution of planets in the HD3167 and K2-32 planetary systems

Colin P. Johnstone, Daria Kubyshkina, Helmut Lammer, Kristina G. Kislyakova, Luca Fossati, Manuel Guedel, Monika Lendl, Nikolay V. Erkaev, Patricio Cubillos, Petra Odert

arxiv:1906.12153 v1 · 2019-06-28 · 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{IT7V2ZGFYX3JXR4HG73ZBWN7YC}

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	2026-05-17T23:41:07.216637Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44ff5d64c5c5f69bc78737f790d9bfc0b555eb9c0c20f1ef647f74a7f1c39f59

Aliases

arxiv: 1906.12153 · arxiv_version: 1906.12153v1 · doi: 10.48550/arxiv.1906.12153 · pith_short_12: IT7V2ZGFYX3J · pith_short_16: IT7V2ZGFYX3JXR4H · pith_short_8: IT7V2ZGF

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/IT7V2ZGFYX3JXR4HG73ZBWN7YC \
  | 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: 44ff5d64c5c5f69bc78737f790d9bfc0b555eb9c0c20f1ef647f74a7f1c39f59

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e61e34e4b2ea0ea64e4842fd07418c8cd0a8977dba23f579735c494fccba50a3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-06-28T12:05:55Z",
    "title_canon_sha256": "25e07042c45491b86539f58e84cff3ae7a493861f49022fffb092950e4e5da6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.12153",
    "kind": "arxiv",
    "version": 1
  }
}