Pith Number

pith:55IWI3ZK

pith:2017:55IWI3ZKUBEJIJU3ANZB55DBIY

not attested not anchored not stored refs pending

Is Proxima Centauri b habitable? -- A study of atmospheric loss

Chuanfei Dong, Manasvi Lingam, Ofer Cohen, Yingjuan Ma

arxiv:1702.04089 v2 · 2017-02-14 · astro-ph.EP · astro-ph.SR · physics.space-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{55IWI3ZKUBEJIJU3ANZB55DBIY}

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	2026-05-18T00:48:41.795625Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef51646f2aa04894269b03721ef46146134b2fe210e0f2fcdfe2bebc8f3e55d8

Aliases

arxiv: 1702.04089 · arxiv_version: 1702.04089v2 · doi: 10.48550/arxiv.1702.04089 · pith_short_12: 55IWI3ZKUBEJ · pith_short_16: 55IWI3ZKUBEJIJU3 · pith_short_8: 55IWI3ZK

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/55IWI3ZKUBEJIJU3ANZB55DBIY \
  | 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: ef51646f2aa04894269b03721ef46146134b2fe210e0f2fcdfe2bebc8f3e55d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d6f02cc270522c022d1495727f779244fc0d88b6928c11f469b3e8b0d876a6d7",
    "cross_cats_sorted": [
      "astro-ph.SR",
      "physics.space-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2017-02-14T06:21:09Z",
    "title_canon_sha256": "d9a44354ea881cbec26b127ecaa39483a462b08c7d8de46ca21b31c1185fc68a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.04089",
    "kind": "arxiv",
    "version": 2
  }
}