Pith Number

pith:4DXCXIBX

pith:2009:4DXCXIBXSXGZSWJANGJ3GOZMTF

not attested not anchored not stored refs pending

Variable Point Sources in Sloan Digital Sky Survey Stripe 82. I. Project Description and Initial Catalog (0 h < R.A. < 4 h)

Holland C. Ford, Larry D. Petro, Michael W. Richmond, Waqas A. Bhatti

arxiv:0912.0976 v1 · 2009-12-07 · 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{4DXCXIBXSXGZSWJANGJ3GOZMTF}

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	2026-05-18T02:33:57.484439Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0ee2ba03795cd9959206993b33b2c9966106c6946e76ca7457fe06e8cfeaa99

Aliases

arxiv: 0912.0976 · arxiv_version: 0912.0976v1 · doi: 10.48550/arxiv.0912.0976 · pith_short_12: 4DXCXIBXSXGZ · pith_short_16: 4DXCXIBXSXGZSWJA · pith_short_8: 4DXCXIBX

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/4DXCXIBXSXGZSWJANGJ3GOZMTF \
  | 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: e0ee2ba03795cd9959206993b33b2c9966106c6946e76ca7457fe06e8cfeaa99

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa0f22eee4a27f2e81fd97fcd89e454cdf00e8a218ce479628c6051fc1f8ada7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-12-07T16:49:05Z",
    "title_canon_sha256": "96e09454ef72e071f4f3c3b588d9c3e65b5a5cf76f363bb8fda317dbea4b3f1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.0976",
    "kind": "arxiv",
    "version": 1
  }
}