Pith Number

pith:42GMYZ5W

pith:2012:42GMYZ5WPJIGJ3VXUM47XZLX5R

not attested not anchored not stored refs pending

Optimal Index Codes for a Class of Multicast Networks with Receiver Side Information

Chin Keong Ho, Lawrence Ong

arxiv:1204.0867 v1 · 2012-04-04 · 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{42GMYZ5WPJIGJ3VXUM47XZLX5R}

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	2026-05-18T03:39:28.777394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e68ccc67b67a5064eeb7a339fbe577ec72ff3d14de6779bec3b03bfa30b26048

Aliases

arxiv: 1204.0867 · arxiv_version: 1204.0867v1 · doi: 10.48550/arxiv.1204.0867 · pith_short_12: 42GMYZ5WPJIG · pith_short_16: 42GMYZ5WPJIGJ3VX · pith_short_8: 42GMYZ5W

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/42GMYZ5WPJIGJ3VXUM47XZLX5R \
  | 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: e68ccc67b67a5064eeb7a339fbe577ec72ff3d14de6779bec3b03bfa30b26048

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cc61946444a82a2ed55049d24d5fe7b8f3fee5c3dd22dd86d668a6837623150",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-04-04T05:27:37Z",
    "title_canon_sha256": "3d7666341910c51cf09bff3e1a308c05556371e935c7540a399cc28d787e88cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.0867",
    "kind": "arxiv",
    "version": 1
  }
}