Pith Number

pith:NDRKVDIW

pith:2010:NDRKVDIWNSOXLH6BLGQ3HU4VCQ

not attested not anchored not stored refs pending

Pythagorean Triples and Cryptographic Coding

Subhash Kak

arxiv:1004.3770 v2 · 2010-04-21 · cs.CR · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NDRKVDIWNSOXLH6BLGQ3HU4VCQ}

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	2026-05-18T04:40:08.265420Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68e2aa8d166c9d759fc159a1b3d395143e9246a9d959ea644630ff27cd7e0706

Aliases

arxiv: 1004.3770 · arxiv_version: 1004.3770v2 · doi: 10.48550/arxiv.1004.3770 · pith_short_12: NDRKVDIWNSOX · pith_short_16: NDRKVDIWNSOXLH6B · pith_short_8: NDRKVDIW

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/NDRKVDIWNSOXLH6BLGQ3HU4VCQ \
  | 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: 68e2aa8d166c9d759fc159a1b3d395143e9246a9d959ea644630ff27cd7e0706

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ac59c81e01c52121a1569a3e79ed7d5cfa6012be62fa0199eb18fd116837487",
    "cross_cats_sorted": [
      "math.HO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2010-04-21T18:47:52Z",
    "title_canon_sha256": "18a1c7de7da878df31f12ddadd469af257db60b6fde4c30d72706a5be67561f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.3770",
    "kind": "arxiv",
    "version": 2
  }
}