Pith Number

pith:FZF4BDF5

pith:2026:FZF4BDF5XDGOEKHGGZFQQF6ZZR

not attested not anchored not stored refs pending

The Interstellar Laser Beacons Hypothesis and the Cosmic Lighthouses Project

Chia-Lung Lin, Daniel Apai, Kevin Wagner

arxiv:2607.12106 v1 · 2026-07-13 · 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{FZF4BDF5XDGOEKHGGZFQQF6ZZR}

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	2026-07-15T00:21:33.482808Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e4bc08cbdb8cce228e6364b0817d9cc743c02cf90761bde631797805c4adaa9

Aliases

arxiv: 2607.12106 · arxiv_version: 2607.12106v1 · doi: 10.48550/arxiv.2607.12106 · pith_short_12: FZF4BDF5XDGO · pith_short_16: FZF4BDF5XDGOEKHG · pith_short_8: FZF4BDF5

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/FZF4BDF5XDGOEKHGGZFQQF6ZZR \
  | 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: 2e4bc08cbdb8cce228e6364b0817d9cc743c02cf90761bde631797805c4adaa9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a10471faadd1f8a0977b952840670781c9a155605d42aef0aa2c3d3c9c33d72b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2026-07-13T19:34:41Z",
    "title_canon_sha256": "5c75fd178204adcee890a5463cdc5d5a7354993417dad38a1bd763bce8aedc29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.12106",
    "kind": "arxiv",
    "version": 1
  }
}