Pith Number

pith:WR53RVK2

pith:2019:WR53RVK2JAU4RHD67ASJMHBMLG

not attested not anchored not stored refs pending

Adventures in Abstraction: Reachability in Hierarchical Drawings

Giacomo Ortali, Ioannis G. Tollis, Panagiotis Lionakis

arxiv:1907.11662 v1 · 2019-07-26 · cs.DS · cs.HC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WR53RVK2JAU4RHD67ASJMHBMLG}

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	2026-05-17T23:39:28.331656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b47bb8d55a4829c89c7ef824961c2c59beea85ec1da8e5b988cbed264bf7b596

Aliases

arxiv: 1907.11662 · arxiv_version: 1907.11662v1 · doi: 10.48550/arxiv.1907.11662 · pith_short_12: WR53RVK2JAU4 · pith_short_16: WR53RVK2JAU4RHD6 · pith_short_8: WR53RVK2

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/WR53RVK2JAU4RHD67ASJMHBMLG \
  | 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: b47bb8d55a4829c89c7ef824961c2c59beea85ec1da8e5b988cbed264bf7b596

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06fb453ec6010442a8af3ea3a521c8b6fc7e9dfc142d87209b7a45a83ebba187",
    "cross_cats_sorted": [
      "cs.HC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-07-26T16:16:41Z",
    "title_canon_sha256": "d70adb9b861578a46011116f4741d616363a81fdd3a48ccf28d154b8e9236bd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.11662",
    "kind": "arxiv",
    "version": 1
  }
}