Pith Number

pith:4RRBT7Y6

pith:2010:4RRBT7Y6FL2VE4D3A5ROD2GUVC

not attested not anchored not stored refs pending

Multi-User Cooperative Diversity through Network Coding Based on Classical Coding Theory

Bartolomeu F. Uch\^oa-Filho, Branka Vucetic, Jo\~ao Luiz Rebelatto, Yonghui Li

arxiv:1004.2757 v2 · 2010-04-16 · 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{4RRBT7Y6FL2VE4D3A5ROD2GUVC}

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	2026-05-18T04:28:45.688824Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e46219ff1e2af552707b0762e1e8d4a8b785a172d3e3ce6fc86ed6ea2892fc7b

Aliases

arxiv: 1004.2757 · arxiv_version: 1004.2757v2 · doi: 10.48550/arxiv.1004.2757 · pith_short_12: 4RRBT7Y6FL2V · pith_short_16: 4RRBT7Y6FL2VE4D3 · pith_short_8: 4RRBT7Y6

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/4RRBT7Y6FL2VE4D3A5ROD2GUVC \
  | 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: e46219ff1e2af552707b0762e1e8d4a8b785a172d3e3ce6fc86ed6ea2892fc7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e520fb9934ae60514ad7d4296fb52412962a87e6121f509e62a438b55793452d",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2010-04-16T04:36:25Z",
    "title_canon_sha256": "366693a434a1ea181a1e2d7e0773df06eaa0017e6539b5869b2b63263624a112"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.2757",
    "kind": "arxiv",
    "version": 2
  }
}