Pith Number

pith:HNNOJD3Z

pith:2021:HNNOJD3ZSRDN6UCYAVNWQQQJU7

not attested not anchored not stored refs pending

Reed-Muller Identification

Christian Deppe, Mattia Spandri, Roberto Ferrara

arxiv:2107.07649 v4 · 2021-07-16 · 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{HNNOJD3ZSRDN6UCYAVNWQQQJU7}

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	2026-07-05T07:00:05.700852Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b5ae48f799446df5058055b684209a7ce8a27435b28eb1d3c4abf63a36e7347

Aliases

arxiv: 2107.07649 · arxiv_version: 2107.07649v4 · doi: 10.48550/arxiv.2107.07649 · pith_short_12: HNNOJD3ZSRDN · pith_short_16: HNNOJD3ZSRDN6UCY · pith_short_8: HNNOJD3Z

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/HNNOJD3ZSRDN6UCYAVNWQQQJU7 \
  | 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: 3b5ae48f799446df5058055b684209a7ce8a27435b28eb1d3c4abf63a36e7347

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c4ff0f6978d0d20e0f695c033cf660676e7dbf992be068212a57bc1f7f4fbbff",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2021-07-16T00:10:09Z",
    "title_canon_sha256": "6e70ce647e8f1eb64e339ef2b7621d620bb11edbf2df110298a76bbf4a4c49fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.07649",
    "kind": "arxiv",
    "version": 4
  }
}