Pith Number

pith:WU7BSVXV

pith:2011:WU7BSVXVIJVVAUS2BARTCRFKEX

not attested not anchored not stored refs pending

Basic Testing of the Duchamp Source Finder

Attila Popping, Paolo Serra, Tobias Westmeier

arxiv:1112.3093 v1 · 2011-12-14 · 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{WU7BSVXVIJVVAUS2BARTCRFKEX}

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	2026-05-18T01:59:10.435447Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b53e1956f5426b50525a08233144aa25fd043901a7e9128c3b24d8580cf5fa33

Aliases

arxiv: 1112.3093 · arxiv_version: 1112.3093v1 · doi: 10.48550/arxiv.1112.3093 · pith_short_12: WU7BSVXVIJVV · pith_short_16: WU7BSVXVIJVVAUS2 · pith_short_8: WU7BSVXV

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/WU7BSVXVIJVVAUS2BARTCRFKEX \
  | 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: b53e1956f5426b50525a08233144aa25fd043901a7e9128c3b24d8580cf5fa33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee2dd5589b55e9a15ea017c997fa68621200f578a8b3ae78b66c86200a5f3a7a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-12-14T01:48:13Z",
    "title_canon_sha256": "b5457ffdac308eaf3f05e76820552c77e33803e79fd69912a5461df0e07ca62a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.3093",
    "kind": "arxiv",
    "version": 1
  }
}