Pith Number

pith:NZKHOJTE

pith:2019:NZKHOJTEKUWH2MNU3H5YV6EQM5

not attested not anchored not stored refs pending

How I Learned to Stop Worrying and Love Re-optimization

Matthew Perron, Michael Stonebraker, Tim Kraska, Zeyuan Shang

arxiv:1902.08291 v2 · 2019-02-21 · cs.DB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NZKHOJTEKUWH2MNU3H5YV6EQM5}

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	2026-05-17T23:50:55.517829Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e54772664552c7d31b4d9fb8af89067544eb2eb394bd9a5e5cee58a92b987c2

Aliases

arxiv: 1902.08291 · arxiv_version: 1902.08291v2 · doi: 10.48550/arxiv.1902.08291 · pith_short_12: NZKHOJTEKUWH · pith_short_16: NZKHOJTEKUWH2MNU · pith_short_8: NZKHOJTE

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/NZKHOJTEKUWH2MNU3H5YV6EQM5 \
  | 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: 6e54772664552c7d31b4d9fb8af89067544eb2eb394bd9a5e5cee58a92b987c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01199a9e3b9e86c3ef7ccc79b98ba4d10ca8ef8bc683da983e7c8988f2ab1350",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2019-02-21T22:33:52Z",
    "title_canon_sha256": "822e753cb8a4339a9e77aacaace6d567c8783d41aefb24698431e78262f70101"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.08291",
    "kind": "arxiv",
    "version": 2
  }
}