Pith Number

pith:HHSQB7BV

pith:2019:HHSQB7BV7PEI6NNA3MEBFWU5UY

not attested not anchored not stored refs pending

Hierarchy of Transportation Network Parameters and Hardness Results

Johannes Blum

arxiv:1905.11166 v3 · 2019-05-27 · cs.DM · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HHSQB7BV7PEI6NNA3MEBFWU5UY}

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	2026-07-05T00:20:15.342588Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39e500fc35fbc88f35a0db0812da9da606d683cace5981865184abf81ad0ed04

Aliases

arxiv: 1905.11166 · arxiv_version: 1905.11166v3 · doi: 10.48550/arxiv.1905.11166 · pith_short_12: HHSQB7BV7PEI · pith_short_16: HHSQB7BV7PEI6NNA · pith_short_8: HHSQB7BV

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/HHSQB7BV7PEI6NNA3MEBFWU5UY \
  | 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: 39e500fc35fbc88f35a0db0812da9da606d683cace5981865184abf81ad0ed04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ceb611a9ab43a522f308bf7b200297d110d408e3620e991b881a6e914ff57de4",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2019-05-27T12:29:11Z",
    "title_canon_sha256": "859b7651c7c94163a9bbbd5d2b795697a2b7cb52182240e5408509b4b97fb6ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.11166",
    "kind": "arxiv",
    "version": 3
  }
}