Pith Number

pith:RUD3Q3BO

pith:2015:RUD3Q3BOADHAT7NIIYSXPD5AON

not attested not anchored not stored refs pending

Robust recoverable and two-stage selection problems

Adam Kasperski, Pawel Zielinski

arxiv:1505.06893 v3 · 2015-05-26 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RUD3Q3BOADHAT7NIIYSXPD5AON}

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	2026-05-18T00:38:11.836556Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d07b86c2e00ce09fda84625778fa0734c782dd4e90309565fe1d50fa0fa0bea

Aliases

arxiv: 1505.06893 · arxiv_version: 1505.06893v3 · doi: 10.48550/arxiv.1505.06893 · pith_short_12: RUD3Q3BOADHA · pith_short_16: RUD3Q3BOADHAT7NI · pith_short_8: RUD3Q3BO

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/RUD3Q3BOADHAT7NIIYSXPD5AON \
  | 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: 8d07b86c2e00ce09fda84625778fa0734c782dd4e90309565fe1d50fa0fa0bea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b960746ee220c586ca666234bad8a663eb6d019ce2a84330638e1180471cddc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-05-26T10:48:41Z",
    "title_canon_sha256": "d732bd79b7fd9bf696735cd9d36119641f9b32ad358a5e56ccb0bbdd52182f47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.06893",
    "kind": "arxiv",
    "version": 3
  }
}