Pith Number

pith:DXS2QPA7

pith:2014:DXS2QPA7OSDVDHPH5L253NAMAP

not attested not anchored not stored refs pending

Comparing DNR and WWKL

Bj{\o}rn Kjos-Hanssen, Klaus Ambos-Spies, Steffen Lempp, Theodore A. Slaman

arxiv:1408.2281 v1 · 2014-08-10 · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DXS2QPA7OSDVDHPH5L253NAMAP}

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	2026-05-18T02:45:29.833706Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1de5a83c1f7487519de7eaf5ddb40c03f2ec83961a6316c5cd4d30ea7ff975a5

Aliases

arxiv: 1408.2281 · arxiv_version: 1408.2281v1 · doi: 10.48550/arxiv.1408.2281 · pith_short_12: DXS2QPA7OSDV · pith_short_16: DXS2QPA7OSDVDHPH · pith_short_8: DXS2QPA7

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/DXS2QPA7OSDVDHPH5L253NAMAP \
  | 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: 1de5a83c1f7487519de7eaf5ddb40c03f2ec83961a6316c5cd4d30ea7ff975a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a8b127555f92488127b4283fd32262ec50b3254f0700a188608d17c66d9bcd5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-08-10T23:27:01Z",
    "title_canon_sha256": "fcc981205bc63bb3a7cf885012369cf5eabeac3348d6a04a5f018f9e160e1beb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.2281",
    "kind": "arxiv",
    "version": 1
  }
}