Pith Number

pith:WMK5S4NL

pith:2025:WMK5S4NLKYPIPR5JL3QWOMVB2G

not attested not anchored not stored refs pending

A Case Study of Interstellar Material Delivery: {\alpha} Centauri

Cole R. Gregg, Paul A. Wiegert

arxiv:2502.03224 v1 · 2025-02-05 · astro-ph.EP · astro-ph.GA · 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{WMK5S4NLKYPIPR5JL3QWOMVB2G}

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	2026-07-05T10:25:47.123765Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b315d971ab561e87c7a95ee16732a1d1b47b680a1c667c81112fca4be7d967f4

Aliases

arxiv: 2502.03224 · arxiv_version: 2502.03224v1 · doi: 10.48550/arxiv.2502.03224 · pith_short_12: WMK5S4NLKYPI · pith_short_16: WMK5S4NLKYPIPR5J · pith_short_8: WMK5S4NL

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/WMK5S4NLKYPIPR5JL3QWOMVB2G \
  | 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: b315d971ab561e87c7a95ee16732a1d1b47b680a1c667c81112fca4be7d967f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a23d748143bf6abea1de3b4c610668e8352a7f32526a987044ea754bd8992160",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2025-02-05T14:41:44Z",
    "title_canon_sha256": "6c5619e318e068ca501af04302d6c591ef4a2bb49fa4d44da3754c579f4246a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.03224",
    "kind": "arxiv",
    "version": 1
  }
}