Pith Number

pith:SGNUJGYB

pith:2015:SGNUJGYB2IZHFMB6O7OCQGFXPD

not attested not anchored not stored refs pending

Extended Unary Coding

Subhash Kak

arxiv:1502.00894 v1 · 2015-02-03 · 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{SGNUJGYB2IZHFMB6O7OCQGFXPD}

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	2026-05-18T02:27:59.305757Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

919b449b01d23272b03e77dc2818b778d435770aea1cb287e715b8f7cb156086

Aliases

arxiv: 1502.00894 · arxiv_version: 1502.00894v1 · doi: 10.48550/arxiv.1502.00894 · pith_short_12: SGNUJGYB2IZH · pith_short_16: SGNUJGYB2IZHFMB6 · pith_short_8: SGNUJGYB

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/SGNUJGYB2IZHFMB6O7OCQGFXPD \
  | 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: 919b449b01d23272b03e77dc2818b778d435770aea1cb287e715b8f7cb156086

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "975e93bfc225e9444e55593755cd903c29f5f5137ebe29b6f8422c8079c69428",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-02-03T15:41:36Z",
    "title_canon_sha256": "619ed217267e4c29d2e9aea28c111a084f64bc1eddda2d8a1c4fc6f1704d28b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.00894",
    "kind": "arxiv",
    "version": 1
  }
}