Pith Number

pith:7HRQLUM6

pith:2018:7HRQLUM6IKGWJIPLE3YPPZSI5M

not attested not anchored not stored refs pending

Predicting the Extreme Ultraviolet Radiation Environment of Exoplanets Around Low-Mass Stars: the TRAPPIST-1 System

E. Baron, Evgenya L. Shkolnik, Peter H. Hauschildt, Sarah Peacock, Travis Barman

arxiv:1812.06159 v1 · 2018-12-14 · astro-ph.SR · 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{7HRQLUM6IKGWJIPLE3YPPZSI5M}

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	2026-05-17T23:54:15.531632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9e305d19e428d64a1eb26f0f7e648eb3a9c19862be2355ac7e7d210ae1701f1

Aliases

arxiv: 1812.06159 · arxiv_version: 1812.06159v1 · doi: 10.48550/arxiv.1812.06159 · pith_short_12: 7HRQLUM6IKGW · pith_short_16: 7HRQLUM6IKGWJIPL · pith_short_8: 7HRQLUM6

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/7HRQLUM6IKGWJIPLE3YPPZSI5M \
  | 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: f9e305d19e428d64a1eb26f0f7e648eb3a9c19862be2355ac7e7d210ae1701f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca671fe6ca514fad30810f90b0cb4bd8093bd110b978fba09a20cf1d80f3f015",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-12-14T20:42:22Z",
    "title_canon_sha256": "e842eca0a48aec69c7e6facdb748cb40c4cdf6e80562dc6a3d9114ce637a57ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.06159",
    "kind": "arxiv",
    "version": 1
  }
}