Pith Number

pith:AW7JVQN4

pith:2019:AW7JVQN4RIQZJFNJPC4FTOCVT3

not attested not anchored not stored refs pending

Optimizing exoplanet atmosphere retrieval using unsupervised machine-learning classification

E. Kerins, I. McDonald, Joshua J.C. Hayes, J.S. Morgan, N. Sanguansak, P. Chuanraksasat, P. Kittara (SPEARNET), S. Awiphan, S. Komonjinda

arxiv:1909.00718 v2 · 2019-09-02 · 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{AW7JVQN4RIQZJFNJPC4FTOCVT3}

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	2026-07-05T00:57:08.113561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05be9ac1bc8a219495a978b859b8559ec67d2a4fa43e78d8b244d1396334adcc

Aliases

arxiv: 1909.00718 · arxiv_version: 1909.00718v2 · doi: 10.48550/arxiv.1909.00718 · pith_short_12: AW7JVQN4RIQZ · pith_short_16: AW7JVQN4RIQZJFNJ · pith_short_8: AW7JVQN4

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/AW7JVQN4RIQZJFNJPC4FTOCVT3 \
  | 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: 05be9ac1bc8a219495a978b859b8559ec67d2a4fa43e78d8b244d1396334adcc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6365636ad8ee1953e771fab71d8c385ddb6d5b45905d9218dd3221f26be054ee",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-09-02T13:53:37Z",
    "title_canon_sha256": "2feefb19ba461224b7c8fab96e2f409c4c8c03a1bda3e3801ea5ef47ce4b1d95"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.00718",
    "kind": "arxiv",
    "version": 2
  }
}