Pith Number

pith:FXO5HIGF

pith:2011:FXO5HIGFEXJ534NBUYQCKYQD5A

not attested not anchored not stored refs pending

Incremental Refinement using a Gaussian Test Channel

Jan Ostergaard, Ram Zamir

arxiv:1105.4989 v1 · 2011-05-25 · 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{FXO5HIGFEXJ534NBUYQCKYQD5A}

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	2026-05-18T04:21:20.959750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2dddd3a0c525d3ddf1a1a620256203e828f2053c46af3e7b791a984e007c3e11

Aliases

arxiv: 1105.4989 · arxiv_version: 1105.4989v1 · doi: 10.48550/arxiv.1105.4989 · pith_short_12: FXO5HIGFEXJ5 · pith_short_16: FXO5HIGFEXJ534NB · pith_short_8: FXO5HIGF

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/FXO5HIGFEXJ534NBUYQCKYQD5A \
  | 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: 2dddd3a0c525d3ddf1a1a620256203e828f2053c46af3e7b791a984e007c3e11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0678bf20845d3d84b38138901d254934a8f33ee6dffcc1cd9e135589fe7f190e",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-05-25T10:32:20Z",
    "title_canon_sha256": "27ac1d0be376b76b613316534f93b44b1e3356b6fa8d8f0e471a6b7f304b7310"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.4989",
    "kind": "arxiv",
    "version": 1
  }
}