Pith Number

pith:VHRPUIAQ

pith:2015:VHRPUIAQBCPX43U4PVETPHZJ2N

not attested not anchored not stored refs pending

A New Index Coding Scheme Exploiting Interlinked Cycles

Chandra Thapa, Lawrence Ong, Sarah J. Johnson

arxiv:1504.02168 v1 · 2015-04-09 · 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{VHRPUIAQBCPX43U4PVETPHZJ2N}

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	2026-05-18T00:42:39.821749Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9e2fa2010089f7e6e9c7d49379f29d3442bc0175c596be97906a55cbc1aadab

Aliases

arxiv: 1504.02168 · arxiv_version: 1504.02168v1 · doi: 10.48550/arxiv.1504.02168 · pith_short_12: VHRPUIAQBCPX · pith_short_16: VHRPUIAQBCPX43U4 · pith_short_8: VHRPUIAQ

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/VHRPUIAQBCPX43U4PVETPHZJ2N \
  | 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: a9e2fa2010089f7e6e9c7d49379f29d3442bc0175c596be97906a55cbc1aadab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa2955c0ab275ff2b83b09a4bb82dac9faf1003620663c4b506e11b78cba0d27",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-04-09T01:32:14Z",
    "title_canon_sha256": "a9abc11016be96c9a630333768d75850e44637cb6cea77412813bb9d03b6459c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02168",
    "kind": "arxiv",
    "version": 1
  }
}