Pith Number

pith:S2IHDRJY

pith:2018:S2IHDRJYK7PQQ7T7IRBOKHUPAU

not attested not anchored not stored refs pending

Diffuser-assisted Photometric Follow-up Observations of the Neptune-sized Planets K2-28b and K2-100b

Brett Morris, Gudmundur Stefansson, John Wisniewski, Joseph Huehnerhoff, Leslie Hebb, Suvrath Mahadevan, Suzanne Hawley, Yiting Li

arxiv:1807.04420 v1 · 2018-07-12 · astro-ph.EP · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S2IHDRJYK7PQQ7T7IRBOKHUPAU}

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	2026-05-17T23:59:52.282058Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

969071c53857df087e7f4442e51e8f05230578e26dc5e6a1b3e34c38fac833ff

Aliases

arxiv: 1807.04420 · arxiv_version: 1807.04420v1 · doi: 10.48550/arxiv.1807.04420 · pith_short_12: S2IHDRJYK7PQ · pith_short_16: S2IHDRJYK7PQQ7T7 · pith_short_8: S2IHDRJY

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/S2IHDRJYK7PQQ7T7IRBOKHUPAU \
  | 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: 969071c53857df087e7f4442e51e8f05230578e26dc5e6a1b3e34c38fac833ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0aaf0ae47d94f7565558d147f90be9a11f1b82623af79b323909c84489d26cb4",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-07-12T04:35:17Z",
    "title_canon_sha256": "b63dc28791f960d82758c90388f626ffdfcc54c61e2cf784afbc3ab1075fff79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.04420",
    "kind": "arxiv",
    "version": 1
  }
}