Pith Number

pith:LEPDDL2B

pith:2017:LEPDDL2BBVCQMMUXKZHYL4XZCC

not attested not anchored not stored refs pending

Reconnaissance of the TRAPPIST-1 exoplanet system in the Lyman-$\alpha$ line

A.H.M.J.Triaud, A.J.Burgasser, D.Ehrenreich, D.Queloz, E.Bolmont, E.Jehin, J.de Wit, M.Gillon, P.J.Wheatley, V.Bourrier

arxiv:1702.07004 v1 · 2017-02-22 · 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{LEPDDL2BBVCQMMUXKZHYL4XZCC}

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	2026-05-18T00:50:08.705268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

591e31af410d45063297564f85f2f910a464c333c181d48d68527de57ebe7c8c

Aliases

arxiv: 1702.07004 · arxiv_version: 1702.07004v1 · doi: 10.48550/arxiv.1702.07004 · pith_short_12: LEPDDL2BBVCQ · pith_short_16: LEPDDL2BBVCQMMUX · pith_short_8: LEPDDL2B

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/LEPDDL2BBVCQMMUXKZHYL4XZCC \
  | 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: 591e31af410d45063297564f85f2f910a464c333c181d48d68527de57ebe7c8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a911ce9caa07a54df63e8147156c25c249d698ac426afcd5874ba2a14c43b6bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2017-02-22T21:00:04Z",
    "title_canon_sha256": "769deb19964b63ef688cc88b76a61e89591342e3022c5c3f5ad6bfb921e9b644"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.07004",
    "kind": "arxiv",
    "version": 1
  }
}