Pith Number

pith:F4OQ6CNH

pith:2008:F4OQ6CNHOLOGCBVPK4I72AJ57E

not attested not anchored not stored refs pending

A Construction for Constant-Composition Codes

Yang Ding

arxiv:0802.1815 v1 · 2008-02-13 · 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{F4OQ6CNHOLOGCBVPK4I72AJ57E}

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	2026-05-18T00:59:11.902695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f1d0f09a772dc6106af5711fd013df9316710b593eb989c6bfc54b7ba63aab4

Aliases

arxiv: 0802.1815 · arxiv_version: 0802.1815v1 · doi: 10.48550/arxiv.0802.1815 · pith_short_12: F4OQ6CNHOLOG · pith_short_16: F4OQ6CNHOLOGCBVP · pith_short_8: F4OQ6CNH

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/F4OQ6CNHOLOGCBVPK4I72AJ57E \
  | 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: 2f1d0f09a772dc6106af5711fd013df9316710b593eb989c6bfc54b7ba63aab4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fdceea141a3517de7218e3c6ccd2e773003c06a87f6679c8d747a0bfab86248",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "",
    "primary_cat": "cs.IT",
    "submitted_at": "2008-02-13T12:59:04Z",
    "title_canon_sha256": "8588602c4c2017c060ec4700cebc68fe21e5e05f3b6a08d20dca90cd39763607"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0802.1815",
    "kind": "arxiv",
    "version": 1
  }
}