Pith Number

pith:X7O7CH3F

pith:2019:X7O7CH3FU7H5J6TWA3IFXKRD5Y

not attested not anchored not stored refs pending

On Polar Coding for Binary Dirty Paper

Barak Beilin, David Burshtein

arxiv:1904.02450 v1 · 2019-04-04 · 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{X7O7CH3FU7H5J6TWA3IFXKRD5Y}

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	2026-05-17T23:49:23.631701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfddf11f65a7cfd4fa7606d05baa23ee02bbaa19629b2f236b56bc869ee5d010

Aliases

arxiv: 1904.02450 · arxiv_version: 1904.02450v1 · doi: 10.48550/arxiv.1904.02450 · pith_short_12: X7O7CH3FU7H5 · pith_short_16: X7O7CH3FU7H5J6TW · pith_short_8: X7O7CH3F

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/X7O7CH3FU7H5J6TWA3IFXKRD5Y \
  | 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: bfddf11f65a7cfd4fa7606d05baa23ee02bbaa19629b2f236b56bc869ee5d010

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9be33ab9710d7f4d8001ed835ed8516ec0e18e554da3b926852fc44fe3ce4a7",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-04-04T10:10:59Z",
    "title_canon_sha256": "49e3ae9e1bc6803b53892c9c6360611a2a3d56fb09dff19d358b268fe13f7225"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02450",
    "kind": "arxiv",
    "version": 1
  }
}