Pith Number

pith:2F7USGBC

pith:2018:2F7USGBCMWHLVBF2LIOT3DOBPQ

not attested not anchored not stored refs pending

What Does "Metallicity" Mean When Interpreting Spectra of Exoplanetary Atmospheres?

Kevin Heng

arxiv:1807.06102 v1 · 2018-07-16 · 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{2F7USGBCMWHLVBF2LIOT3DOBPQ}

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	2026-05-18T00:10:34.035100Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d17f491822658eba84ba5a1d3d8dc17c2a1a68ffb544ef9fd6374154ce9a65ba

Aliases

arxiv: 1807.06102 · arxiv_version: 1807.06102v1 · doi: 10.48550/arxiv.1807.06102 · pith_short_12: 2F7USGBCMWHL · pith_short_16: 2F7USGBCMWHLVBF2 · pith_short_8: 2F7USGBC

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/2F7USGBCMWHLVBF2LIOT3DOBPQ \
  | 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: d17f491822658eba84ba5a1d3d8dc17c2a1a68ffb544ef9fd6374154ce9a65ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a36dcb428fa2506b4d126e9903b9b0511457ea18b8b01cf2eae892dc27c5725",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-07-16T20:48:49Z",
    "title_canon_sha256": "7e99b96e170a093c93ecd563b58d65a354f24783e04e4d6a5a31e447585a94b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06102",
    "kind": "arxiv",
    "version": 1
  }
}