Pith Number

pith:ULV4F4JK

pith:2018:ULV4F4JKTEWMKOPD6EHXT3EQHO

not attested not anchored not stored refs pending

Supermodular Locality Sensitive Hashes

Matthew B. Blaschko, Maxim Berman

arxiv:1807.06686 v1 · 2018-07-17 · cs.DM · 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{ULV4F4JKTEWMKOPD6EHXT3EQHO}

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	2026-05-18T00:10:27.164564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2ebc2f12a992cc539e3f10f79ec903b8bd8b0e7983c4a70a222f4122bb6ed6f

Aliases

arxiv: 1807.06686 · arxiv_version: 1807.06686v1 · doi: 10.48550/arxiv.1807.06686 · pith_short_12: ULV4F4JKTEWM · pith_short_16: ULV4F4JKTEWMKOPD · pith_short_8: ULV4F4JK

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/ULV4F4JKTEWMKOPD6EHXT3EQHO \
  | 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: a2ebc2f12a992cc539e3f10f79ec903b8bd8b0e7983c4a70a222f4122bb6ed6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "969b9fdf372f93d48a4b968082f6b80cce907b91eb60bb4cadda26282eb141ec",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2018-07-17T21:58:31Z",
    "title_canon_sha256": "334ee8ba3152bfa588c874d410183031dd857010428ded93d692153c9bc89267"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06686",
    "kind": "arxiv",
    "version": 1
  }
}