Pith Number

pith:PO5X4X7I

pith:2006:PO5X4X7IJ5JQLFYQNMGUMS6LDB

not attested not anchored not stored refs pending

Color Tomography

Andrew Connolly (Pittsburgh), Bhuvnesh Jain (Penn), Masahiro Takada (Tohoku)

arxiv:astro-ph/0609338 v3 · 2006-09-13 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PO5X4X7IJ5JQLFYQNMGUMS6LDB}

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	2026-05-18T04:38:37.311407Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bbb7e5fe84f530597106b0d464bcb184e9449f0f3eb1a0f2271977a981e636b

Aliases

arxiv: astro-ph/0609338 · arxiv_version: astro-ph/0609338v3 · doi: 10.48550/arxiv.astro-ph/0609338 · pith_short_12: PO5X4X7IJ5JQ · pith_short_16: PO5X4X7IJ5JQLFYQ · pith_short_8: PO5X4X7I

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/PO5X4X7IJ5JQLFYQNMGUMS6LDB \
  | 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: 7bbb7e5fe84f530597106b0d464bcb184e9449f0f3eb1a0f2271977a981e636b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e032612fde3aa3fc6304c3d21acbe2462b39e456c92f54d41f65e9f40018d040",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-09-13T19:57:59Z",
    "title_canon_sha256": "2ab15497ca20e47b78fc9432f178e1aa9d1f8a1376c7606a1cbbb5e29f63d471"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0609338",
    "kind": "arxiv",
    "version": 3
  }
}