Pith Number

pith:DZQGCBWY

pith:2015:DZQGCBWY5OAFVAFSEEC5VOEZWE

not attested not anchored not stored refs pending

Algorithmic Aspects of Optimal Channel Coding

Omar Fawzi, Siddharth Barman

arxiv:1508.04095 v2 · 2015-08-17 · cs.IT · cs.DS · math.IT · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DZQGCBWY5OAFVAFSEEC5VOEZWE}

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	2026-05-18T00:12:41.031491Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e606106d8eb805a80b22105dab899b11ea55ad2d40e076a0c6c6bbdafa0ea49

Aliases

arxiv: 1508.04095 · arxiv_version: 1508.04095v2 · doi: 10.48550/arxiv.1508.04095 · pith_short_12: DZQGCBWY5OAF · pith_short_16: DZQGCBWY5OAFVAFS · pith_short_8: DZQGCBWY

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/DZQGCBWY5OAFVAFSEEC5VOEZWE \
  | 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: 1e606106d8eb805a80b22105dab899b11ea55ad2d40e076a0c6c6bbdafa0ea49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4da24c607eedb3ecbc460e30b7a090baee41b6ce0526b3fb99f00eb6cc7a914a",
    "cross_cats_sorted": [
      "cs.DS",
      "math.IT",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-08-17T17:41:47Z",
    "title_canon_sha256": "b7b65584d641d2783957385278b0a06ac3c9950b232b1bd8976e35f774b3103f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.04095",
    "kind": "arxiv",
    "version": 2
  }
}