Pith Number

pith:4F3CDBPS

pith:2019:4F3CDBPS3ELC4MW4AIUCC3N4VT

not attested not anchored not stored refs pending

Propelling Interplanetary Spacecraft Utilizing Water-Steam

Jekan Thangavelautham, Jorge Martinez

arxiv:1902.03523 v1 · 2019-02-10 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4F3CDBPS3ELC4MW4AIUCC3N4VT}

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	2026-05-17T23:54:20.589051Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1762185f2d9162e32dc0228216dbcacd61871456d2e19bcf0ebbaa4b419c8d0

Aliases

arxiv: 1902.03523 · arxiv_version: 1902.03523v1 · doi: 10.48550/arxiv.1902.03523 · pith_short_12: 4F3CDBPS3ELC · pith_short_16: 4F3CDBPS3ELC4MW4 · pith_short_8: 4F3CDBPS

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/4F3CDBPS3ELC4MW4AIUCC3N4VT \
  | 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: e1762185f2d9162e32dc0228216dbcacd61871456d2e19bcf0ebbaa4b419c8d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8687ab53549e996fd7bd7d89f4e0cab4e2b960b69c3c33671ee8c3ab47cfa607",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-02-10T00:58:12Z",
    "title_canon_sha256": "28aead2b8380c2a22a8a26f6b60b67148be9a1ff540e984f916e296b9fbf3c59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.03523",
    "kind": "arxiv",
    "version": 1
  }
}