Pith Number

pith:BWJWZTS7

pith:2017:BWJWZTS73DOB6CZQ4YOC73LCFU

not attested not anchored not stored refs pending

Reduced Diversity of Life Around Proxima Centauri and TRAPPIST-1

Abraham Loeb, Manasvi Lingam

arxiv:1707.07007 v2 · 2017-07-21 · astro-ph.EP · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BWJWZTS73DOB6CZQ4YOC73LCFU}

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	2026-05-18T00:36:02.929451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d936cce5fd8dc1f0b30e61c2fed622d19f568dabbc36ff71e2936f0bf0b49ce

Aliases

arxiv: 1707.07007 · arxiv_version: 1707.07007v2 · doi: 10.48550/arxiv.1707.07007 · pith_short_12: BWJWZTS73DOB · pith_short_16: BWJWZTS73DOB6CZQ · pith_short_8: BWJWZTS7

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/BWJWZTS73DOB6CZQ4YOC73LCFU \
  | 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: 0d936cce5fd8dc1f0b30e61c2fed622d19f568dabbc36ff71e2936f0bf0b49ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0dbd71b4cc5787f64fe6ecd5a78d8f24d9b1daf4fbe611616622666545ac6057",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2017-07-21T18:00:04Z",
    "title_canon_sha256": "dea4943e87a333f957a56bd5647fab477f7e5c36793db1f03a3fe7136b2e854c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.07007",
    "kind": "arxiv",
    "version": 2
  }
}