Pith Number

pith:5WGMRSDB

pith:2026:5WGMRSDBASF5HDMF2QXH6UHYNW

not attested not anchored not stored refs pending

Layered construction of Message-Wise Unequal Error Protection Codes

Qiming Lu, Shan Lu, Takaya Yamazato

arxiv:2605.23390 v1 · 2026-05-22 · 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{5WGMRSDBASF5HDMF2QXH6UHYNW}

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	2026-05-25T02:01:52.080167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed8cc8c861048bd38d85d42e7f50f86dbb87ab13ff1eb0f13093b3b468905697

Aliases

arxiv: 2605.23390 · arxiv_version: 2605.23390v1 · doi: 10.48550/arxiv.2605.23390 · pith_short_12: 5WGMRSDBASF5 · pith_short_16: 5WGMRSDBASF5HDMF · pith_short_8: 5WGMRSDB

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/5WGMRSDBASF5HDMF2QXH6UHYNW \
  | 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: ed8cc8c861048bd38d85d42e7f50f86dbb87ab13ff1eb0f13093b3b468905697

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0ca7228b5c574e89c2b104cbc16ac9e3a8e50c4494299e13c8f6bacbbe8d26e",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2026-05-22T09:00:49Z",
    "title_canon_sha256": "c06f0ca530a97267e9d5d744eef100a6e3ec4a7c89854cdd7690778fd93c30b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.23390",
    "kind": "arxiv",
    "version": 1
  }
}