Pith Number

pith:UXF55JA3

pith:2023:UXF55JA3WAYP2ZTQTRB753IQN6

not attested not anchored not stored refs pending

The Tree of Light as interstellar optical transmitter system

Andrea Vogliardi, Anna Valeria Guglielmi, Elisa Bazzani, Filippo Romanato, Francesco Vedovato, Gianluca Ruffato, Giuseppe Vallone, Lorenzo Vangelista, Nicola Laurenti, Paolo Villoresi, Roberto Corvaja

arxiv:2308.01900 v1 · 2023-08-03 · 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{UXF55JA3WAYP2ZTQTRB753IQN6}

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	2026-07-05T10:11:13.552656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5cbdea41bb030fd66709c43feed106fa409baf83853a77a6e3fcee7923d8bcb

Aliases

arxiv: 2308.01900 · arxiv_version: 2308.01900v1 · doi: 10.48550/arxiv.2308.01900 · pith_short_12: UXF55JA3WAYP · pith_short_16: UXF55JA3WAYP2ZTQ · pith_short_8: UXF55JA3

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/UXF55JA3WAYP2ZTQTRB753IQN6 \
  | 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: a5cbdea41bb030fd66709c43feed106fa409baf83853a77a6e3fcee7923d8bcb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7ddd9131a47642f48f13313a105a8059568c5a5d7dadf3cd79217dcaa55307c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2023-08-03T17:56:17Z",
    "title_canon_sha256": "9675d3e6e1fb7764f3fe7948db43793f54309021eea24eecbcfd8343f5bd683b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2308.01900",
    "kind": "arxiv",
    "version": 1
  }
}