Pith Number

pith:XDLUNKCH

pith:2011:XDLUNKCHS7PIXR4PKOUSJJBAAZ

not attested not anchored not stored refs pending

IVOA Recommendation: VOSpace specification Version 1.15

Dave Morris, Guy Rixon, Matthew Graham

arxiv:1110.0508 v1 · 2011-10-03 · 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{XDLUNKCHS7PIXR4PKOUSJJBAAZ}

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	2026-05-18T04:11:49.587666Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8d746a84797de8bc78f53a924a4200643245218c12ca1e73b67627cd778eb14

Aliases

arxiv: 1110.0508 · arxiv_version: 1110.0508v1 · doi: 10.48550/arxiv.1110.0508 · pith_short_12: XDLUNKCHS7PI · pith_short_16: XDLUNKCHS7PIXR4P · pith_short_8: XDLUNKCH

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/XDLUNKCHS7PIXR4PKOUSJJBAAZ \
  | 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: b8d746a84797de8bc78f53a924a4200643245218c12ca1e73b67627cd778eb14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c80d8f3898d157466f01e48469f425c9f1fd0b8ab36506402e19357ac56c2096",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-10-03T21:11:38Z",
    "title_canon_sha256": "9ad1f817505a7da6ac3a393388e1f19d033d92ba387cb1f0134e4630c5409d46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.0508",
    "kind": "arxiv",
    "version": 1
  }
}