Pith Number

pith:PHCFZPOA

pith:2023:PHCFZPOAFG7UUO33XH5CUSRSDN

not attested not anchored not stored refs pending

The Prospect of Detecting Volcanic Signatures on an ExoEarth Using Direct Imaging

Colby M. Ostberg, Erika Kohler, Jacob Richardson, Luke D. Oman, Patrick Whelley, Ravi K. Kopparapu, Scott D. Guzewich, Stephen R. Kane, Thomas J. Fauchez

arxiv:2309.15972 v1 · 2023-09-27 · 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{PHCFZPOAFG7UUO33XH5CUSRSDN}

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	2026-07-05T06:55:09.493656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79c45cbdc029bf4a3b7bb9fa2a4a321b4a9f22e759088cd4e722bad22ec75cc4

Aliases

arxiv: 2309.15972 · arxiv_version: 2309.15972v1 · doi: 10.48550/arxiv.2309.15972 · pith_short_12: PHCFZPOAFG7U · pith_short_16: PHCFZPOAFG7UUO33 · pith_short_8: PHCFZPOA

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/PHCFZPOAFG7UUO33XH5CUSRSDN \
  | 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: 79c45cbdc029bf4a3b7bb9fa2a4a321b4a9f22e759088cd4e722bad22ec75cc4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d88d07a6334b31579790c93b1f809bde29e621083ba2eaf6b72acd6098ad81c",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2023-09-27T19:43:07Z",
    "title_canon_sha256": "8e895dd979197785999972a0e12fe7f218e8447d7ef814a4dfcbe54129410df2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2309.15972",
    "kind": "arxiv",
    "version": 1
  }
}