Pith Number

pith:WPDJQY2V

pith:2011:WPDJQY2VOXQKWPQAMYBUPBFXLO

not attested not anchored not stored refs pending

Systematic Bias in 2MASS Galaxy Photometry

James Schombert (Dept. of Physics, Univ. of Oregon)

arxiv:1107.1728 v1 · 2011-07-08 · astro-ph.IM · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WPDJQY2VOXQKWPQAMYBUPBFXLO}

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	2026-05-18T04:18:34.222734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3c698635575e0ab3e0066034784b75b9bd7a8a1efbd14bb5225a958711aa610

Aliases

arxiv: 1107.1728 · arxiv_version: 1107.1728v1 · doi: 10.48550/arxiv.1107.1728 · pith_short_12: WPDJQY2VOXQK · pith_short_16: WPDJQY2VOXQKWPQA · pith_short_8: WPDJQY2V

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/WPDJQY2VOXQKWPQAMYBUPBFXLO \
  | 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: b3c698635575e0ab3e0066034784b75b9bd7a8a1efbd14bb5225a958711aa610

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aaf4a6acd54cb711115cbea90226500283901b440450e0ef779e52075ac5bdfd",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-07-08T20:25:16Z",
    "title_canon_sha256": "81ebe72fe6b42d52662415178cce6f21bc91103c10a709cda9239508cf7e2d6e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.1728",
    "kind": "arxiv",
    "version": 1
  }
}