Pith Number

pith:RQ624XVH

pith:2018:RQ624XVHZINDHFX7WHCEESVDJB

not attested not anchored not stored refs pending

Searching for Biosignatures in Exoplanetary Impact Ejecta

Alexis Brandeker, Anna Neubeck, Bernard L. de Vries, Engy Ahmed, Gianni Cataldi, G\"oran Olofsson, Kelsi Singer, Philippe Th\'ebault

arxiv:1808.04504 v1 · 2018-08-14 · 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{RQ624XVHZINDHFX7WHCEESVDJB}

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	2026-05-18T00:08:12.296381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c3dae5ea7ca1a3396ffb1c4424aa3487a8c56585c37e4bce5979148a6f83080

Aliases

arxiv: 1808.04504 · arxiv_version: 1808.04504v1 · doi: 10.48550/arxiv.1808.04504 · pith_short_12: RQ624XVHZIND · pith_short_16: RQ624XVHZINDHFX7 · pith_short_8: RQ624XVH

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/RQ624XVHZINDHFX7WHCEESVDJB \
  | 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: 8c3dae5ea7ca1a3396ffb1c4424aa3487a8c56585c37e4bce5979148a6f83080

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "737894119dfd53e6b131eab4b09e27c49a0997be86ad449a16c2265865b5d0fb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-08-14T01:39:47Z",
    "title_canon_sha256": "4f97cbb12f9b82a315789ef0fdb8a6ade3e6fdd7013291cc1d8fd52ecd6283ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.04504",
    "kind": "arxiv",
    "version": 1
  }
}