Pith Number

pith:FJDI7CYF

pith:2023:FJDI7CYF6PAEDKHCJ4OIHTY6KB

not attested not anchored not stored refs pending

Smartphone screens as astrometric calibrators

Aidan Walk, Charles-Antoine Claveau, Jessica R. Lu, Mark Chun, Maxwell Service, Michael Bottom, Shane Jacobson

arxiv:2303.04961 v2 · 2023-03-09 · 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{FJDI7CYF6PAEDKHCJ4OIHTY6KB}

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	2026-07-05T06:28:35.174338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a468f8b05f3c041a8e24f1c83cf1e5070f1f80471a15f2d3f7b04536a9d2207

Aliases

arxiv: 2303.04961 · arxiv_version: 2303.04961v2 · doi: 10.48550/arxiv.2303.04961 · pith_short_12: FJDI7CYF6PAE · pith_short_16: FJDI7CYF6PAEDKHC · pith_short_8: FJDI7CYF

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/FJDI7CYF6PAEDKHCJ4OIHTY6KB \
  | 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: 2a468f8b05f3c041a8e24f1c83cf1e5070f1f80471a15f2d3f7b04536a9d2207

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bcfe7f030f817cfca63b284138538c93f9afc87926d793dd1ab2d13da0a5774",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2023-03-09T00:33:50Z",
    "title_canon_sha256": "6d186f1b7450126f2a202a79391e027503191486935ac648233f321f64367933"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2303.04961",
    "kind": "arxiv",
    "version": 2
  }
}