Pith Number

pith:KG4FST5S

pith:2018:KG4FST5SZKSZ5QFRL5K2F45NE5

not attested not anchored not stored refs pending

An Improved Envy-Free Cake Cutting Protocol for Four Agents

Christos-Alexandros Psomas, Eftychia Vakaliou, Evangelos Markakis, George Christodoulou, Georgios Amanatidis, John Fearnley

arxiv:1807.00317 v1 · 2018-07-01 · cs.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KG4FST5SZKSZ5QFRL5K2F45NE5}

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	2026-05-18T00:11:55.237172Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51b8594fb2caa59ec0b15f55a2f3ad275f8a89c9033cb264e23df1c8fc726ea7

Aliases

arxiv: 1807.00317 · arxiv_version: 1807.00317v1 · doi: 10.48550/arxiv.1807.00317 · pith_short_12: KG4FST5SZKSZ · pith_short_16: KG4FST5SZKSZ5QFR · pith_short_8: KG4FST5S

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/KG4FST5SZKSZ5QFRL5K2F45NE5 \
  | 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: 51b8594fb2caa59ec0b15f55a2f3ad275f8a89c9033cb264e23df1c8fc726ea7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2405410e07ae7546e27876357a18ab0e00931e878ce5e1d255c65af3ac13415",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.GT",
    "submitted_at": "2018-07-01T11:59:25Z",
    "title_canon_sha256": "5e05954286f346a2fd56961921145df1493d843275b660d700c9daa3d2a0e2b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.00317",
    "kind": "arxiv",
    "version": 1
  }
}