Pith Number

pith:NTOZK5VN

pith:2011:NTOZK5VNZTVDMPPFZ32SMEPDOU

not attested not anchored not stored refs pending

A Combinatorial Optimisation Approach to Designing Dual-Parented Long-Reach Passive Optical Networks

Barry O'Sullivan, David Payne, Deepak Mehta, Hadrien Cambazard, Linda Doyle, Luis Quesada, Marco Ruffini

arxiv:1109.1231 v1 · 2011-09-06 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NTOZK5VNZTVDMPPFZ32SMEPDOU}

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	2026-05-18T04:14:05.116922Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cdd9576adccea363de5cef52611e3752f2a2b69a4db8519c69d1caf4bfb47d2

Aliases

arxiv: 1109.1231 · arxiv_version: 1109.1231v1 · doi: 10.48550/arxiv.1109.1231 · pith_short_12: NTOZK5VNZTVD · pith_short_16: NTOZK5VNZTVDMPPF · pith_short_8: NTOZK5VN

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/NTOZK5VNZTVDMPPFZ32SMEPDOU \
  | 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: 6cdd9576adccea363de5cef52611e3752f2a2b69a4db8519c69d1caf4bfb47d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "557f7e87711c91eae5a529edaf96aec91b3705b4f82dbc38d886e14ca2723cec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2011-09-06T17:06:23Z",
    "title_canon_sha256": "fec1898339193dda3fd591044bb85662deeaa1b655d293153926c0e12ff72af1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.1231",
    "kind": "arxiv",
    "version": 1
  }
}