Pith Number

pith:D77BHKY5

pith:2019:D77BHKY5YQ7WCPAZFA47ITXFJL

not attested not anchored not stored refs pending

On the Flow Problem in Water Distribution Networks: Uniqueness and Solvers

Manish K. Singh, Vassilis Kekatos

arxiv:1901.03676 v2 · 2019-01-11 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D77BHKY5YQ7WCPAZFA47ITXFJL}

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	2026-07-05T01:44:07.381731Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ffe13ab1dc43f613c192839f44ee54af5868923fd7904608d4dad2853d09db6

Aliases

arxiv: 1901.03676 · arxiv_version: 1901.03676v2 · doi: 10.48550/arxiv.1901.03676 · pith_short_12: D77BHKY5YQ7W · pith_short_16: D77BHKY5YQ7WCPAZ · pith_short_8: D77BHKY5

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/D77BHKY5YQ7WCPAZFA47ITXFJL \
  | 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: 1ffe13ab1dc43f613c192839f44ee54af5868923fd7904608d4dad2853d09db6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "395fcbd75a3815df1567e073c818754b21449480c294f25c4becccd135d2d4d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-01-11T18:01:34Z",
    "title_canon_sha256": "9a1d0179734bbc33946ebb1ce1f4c8c3a32a0a8554ce1339f0c71b0a8240ef1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.03676",
    "kind": "arxiv",
    "version": 2
  }
}