Pith Number

pith:EVWDTSML

pith:2019:EVWDTSMLGD4SF75AQ6PCF5AWJO

not attested not anchored not stored refs pending

The Role of N2 as a Geo-Biosignature for the Detection and Characterization of Earth-like Habitats

Helmut Lammer, John Lee Grenfell, Laurenz Spro{\ss}, Luca Fossati, Manuel Scherf, Monika Lendl, Patricio E. Cubillos

arxiv:1904.11716 v1 · 2019-04-26 · 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{EVWDTSMLGD4SF75AQ6PCF5AWJO}

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	2026-05-17T23:39:54.042836Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

256c39c98b30f922ffa0879e22f4164ba76ba651e81438929497a11e37155c7e

Aliases

arxiv: 1904.11716 · arxiv_version: 1904.11716v1 · doi: 10.48550/arxiv.1904.11716 · pith_short_12: EVWDTSMLGD4S · pith_short_16: EVWDTSMLGD4SF75A · pith_short_8: EVWDTSML

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/EVWDTSMLGD4SF75AQ6PCF5AWJO \
  | 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: 256c39c98b30f922ffa0879e22f4164ba76ba651e81438929497a11e37155c7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c4e6f5166d80f03c9f48d66f9298765c8fbff6dd8820ec70cbd67510d616b32b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-04-26T08:37:19Z",
    "title_canon_sha256": "84d67208211ebbc289057d0a26a994bbabe63505774207e41534914e5f68fb51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.11716",
    "kind": "arxiv",
    "version": 1
  }
}