Pith Number

pith:UGJCR6JL

pith:2012:UGJCR6JLC5ZXOTHS26523YD7ZP

not attested not anchored not stored refs pending

Enhanced Mobile Digital Video Broadcasting with Distributed Space-Time Coding

Jean-Fran\c{c}ois H\'elard (IETR), Maryline H\'elard (IETR), Matthieu Crussi\`ere (IETR), Ming Liu (IETR), Youssef Nasser

arxiv:1212.2345 v1 · 2012-12-11 · cs.IT · cs.MM · 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{UGJCR6JLC5ZXOTHS26523YD7ZP}

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	2026-05-18T03:38:45.244327Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a19228f92b1773774cf2d7bbade07fcbf140426ffa877ff9bed72cbbba3e9098

Aliases

arxiv: 1212.2345 · arxiv_version: 1212.2345v1 · doi: 10.48550/arxiv.1212.2345 · pith_short_12: UGJCR6JLC5ZX · pith_short_16: UGJCR6JLC5ZXOTHS · pith_short_8: UGJCR6JL

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/UGJCR6JLC5ZXOTHS26523YD7ZP \
  | 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: a19228f92b1773774cf2d7bbade07fcbf140426ffa877ff9bed72cbbba3e9098

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5890ef06d051b90badad90734512ec32c729b0c447c4aa8b7d8c8e812f778112",
    "cross_cats_sorted": [
      "cs.MM",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-12-11T09:18:43Z",
    "title_canon_sha256": "9df3028cc06e70cc4bd29eaf149d259b578c47bc0ada36218220aec830f1c855"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.2345",
    "kind": "arxiv",
    "version": 1
  }
}