Pith Number

pith:WPY35AUG

pith:2018:WPY35AUGEYNRM34APE2ZCKDIT2

not attested not anchored not stored refs pending

A procedure for observing rocky exoplanets to maximize the likelihood that atmospheric oxygen will be a biosignature

Carey M. Lisse, Cayman T. Unterborn, Hilairy E. Hartnett, Sang-Heon Shim, Stephen Kane, Steven J. Desch

arxiv:1801.06935 v1 · 2018-01-22 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WPY35AUGEYNRM34APE2ZCKDIT2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:25:22.763007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3f1be8286261b166f8079359128689e9acaf5f1a60d111f4a936f857beb70d9

Aliases

arxiv: 1801.06935 · arxiv_version: 1801.06935v1 · doi: 10.48550/arxiv.1801.06935 · pith_short_12: WPY35AUGEYNR · pith_short_16: WPY35AUGEYNRM34A · pith_short_8: WPY35AUG

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/WPY35AUGEYNRM34APE2ZCKDIT2 \
  | 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: b3f1be8286261b166f8079359128689e9acaf5f1a60d111f4a936f857beb70d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ddc1b6317a81261384c1fce894bab5dd8654feb0b118547ee6563b2f2cf0a1db",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-01-22T02:09:29Z",
    "title_canon_sha256": "cf3add6b15e01b4dd1a403e8963bd1d86f9fd137892c1a4edd34a0c558483634"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.06935",
    "kind": "arxiv",
    "version": 1
  }
}