Pith Number

pith:7NFK7EB4

pith:2022:7NFK7EB4MHOV7WKRRNGKBNNZXG

not attested not anchored not stored refs pending

Non-adaptive and two-stage coding over the Z-channel

Alexey Lebedev, Christian Deppe, Ilya Vorobyev, Vladimir Lebedev

arxiv:2202.00136 v2 · 2022-01-31 · cs.IT · math.CO · 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{7NFK7EB4MHOV7WKRRNGKBNNZXG}

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	2026-07-05T04:55:37.666018Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb4aaf903c61dd5fd9518b4ca0b5b9b98def030f80a77407c0e878c7a86d03d0

Aliases

arxiv: 2202.00136 · arxiv_version: 2202.00136v2 · doi: 10.48550/arxiv.2202.00136 · pith_short_12: 7NFK7EB4MHOV · pith_short_16: 7NFK7EB4MHOV7WKR · pith_short_8: 7NFK7EB4

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/7NFK7EB4MHOV7WKRRNGKBNNZXG \
  | 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: fb4aaf903c61dd5fd9518b4ca0b5b9b98def030f80a77407c0e878c7a86d03d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c8835b3988685785181f1e03c74b283d371a87d855444d965c4dfd3f41c7742",
    "cross_cats_sorted": [
      "math.CO",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2022-01-31T22:50:21Z",
    "title_canon_sha256": "6268897e550e82db1e72cd74457bfca9417f4606bd9f1126bd81250bd6904b16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.00136",
    "kind": "arxiv",
    "version": 2
  }
}