Pith Number

pith:BJI33XPM

pith:2017:BJI33XPMMDKMNZE5GMCEVCYYME

not attested not anchored not stored refs pending

A Review of Exoplanetary Biosignatures

John Lee Grenfell

arxiv:1710.03976 v1 · 2017-10-11 · 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{BJI33XPMMDKMNZE5GMCEVCYYME}

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	2026-05-18T00:25:52.554125Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a51bdddec60d4c6e49d33044a8b18611811fe7b74c2369051a7480518dd3533

Aliases

arxiv: 1710.03976 · arxiv_version: 1710.03976v1 · doi: 10.48550/arxiv.1710.03976 · pith_short_12: BJI33XPMMDKM · pith_short_16: BJI33XPMMDKMNZE5 · pith_short_8: BJI33XPM

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/BJI33XPMMDKMNZE5GMCEVCYYME \
  | 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: 0a51bdddec60d4c6e49d33044a8b18611811fe7b74c2369051a7480518dd3533

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75720b4ec9cbf6ca2ca4a0aef416784089cf8885a758024552cbad942da7d799",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2017-10-11T09:33:13Z",
    "title_canon_sha256": "6e6e2d78428caf3bd9901a67855525f0696f6479fed62d78f5e982bf1ccda5b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.03976",
    "kind": "arxiv",
    "version": 1
  }
}