Pith Number

pith:JDVPNSEX

pith:2016:JDVPNSEXEAQ6SLHJWXATUM2KN6

not attested not anchored not stored refs pending

Obstructing Visibilities with One Obstacle

Alexander Wolff, Fabian Lipp, Ji-Won Park, Steven Chaplick

arxiv:1607.00278 v2 · 2016-07-01 · cs.CG · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JDVPNSEXEAQ6SLHJWXATUM2KN6}

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	2026-05-18T01:06:28.508882Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

48eaf6c8972021e92ce9b5c13a334a6f908feaa7f62619e3a27b9984c915b30a

Aliases

arxiv: 1607.00278 · arxiv_version: 1607.00278v2 · doi: 10.48550/arxiv.1607.00278 · pith_short_12: JDVPNSEXEAQ6 · pith_short_16: JDVPNSEXEAQ6SLHJ · pith_short_8: JDVPNSEX

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/JDVPNSEXEAQ6SLHJWXATUM2KN6 \
  | 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: 48eaf6c8972021e92ce9b5c13a334a6f908feaa7f62619e3a27b9984c915b30a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6995a4afcc3fc7ad6003dda6b6c65a476bc71ce324a9a6b1b54127821315f158",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2016-07-01T15:07:32Z",
    "title_canon_sha256": "ae97eae2399922fac8a9bf5deb80098de4374402f944e6ded63ab7343bae48ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.00278",
    "kind": "arxiv",
    "version": 2
  }
}