Pith Number

pith:PPP7OTJH

pith:2014:PPP7OTJHUSQRNZY2MQD22UNCMB

not attested not anchored not stored refs pending

Spread Unary Coding

Subhash Kak

arxiv:1412.6122 v1 · 2014-12-02 · cs.NE · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PPP7OTJHUSQRNZY2MQD22UNCMB}

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	2026-05-18T02:30:54.409032Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bdff74d27a4a116e71a6407ad51a260529a0158b5d6168644ccbe42f3da248a

Aliases

arxiv: 1412.6122 · arxiv_version: 1412.6122v1 · doi: 10.48550/arxiv.1412.6122 · pith_short_12: PPP7OTJHUSQR · pith_short_16: PPP7OTJHUSQRNZY2 · pith_short_8: PPP7OTJH

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/PPP7OTJHUSQRNZY2MQD22UNCMB \
  | 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: 7bdff74d27a4a116e71a6407ad51a260529a0158b5d6168644ccbe42f3da248a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a2bbdff409e7db96efbd30fdf3e1c721666dc7f9ab31ca9b685a560eaded354",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NE",
    "submitted_at": "2014-12-02T22:58:54Z",
    "title_canon_sha256": "52953d725bce3b7c94fbeddc60fbea91886623001b2dbae33654e8ed14c5998e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.6122",
    "kind": "arxiv",
    "version": 1
  }
}