Pith Number

pith:IFYZGUFR

pith:2012:IFYZGUFR3LBLA34VC6G5HI26FB

not attested not anchored not stored refs pending

Polar write once memory codes

Alona Strugatski, David Burshtein

arxiv:1207.0782 v2 · 2012-07-03 · 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{IFYZGUFR3LBLA34VC6G5HI26FB}

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	2026-05-18T03:43:52.152584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41719350b1dac2b06f95178dd3a35e286f8c19d8b4d67f72713d4a1685b5b4bb

Aliases

arxiv: 1207.0782 · arxiv_version: 1207.0782v2 · doi: 10.48550/arxiv.1207.0782 · pith_short_12: IFYZGUFR3LBL · pith_short_16: IFYZGUFR3LBLA34V · pith_short_8: IFYZGUFR

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/IFYZGUFR3LBLA34VC6G5HI26FB \
  | 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: 41719350b1dac2b06f95178dd3a35e286f8c19d8b4d67f72713d4a1685b5b4bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "947c2ae0ae799488d6c2bd3e20f6a2fcb3050403989a0afaa56f6eb279676a9d",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-07-03T19:11:25Z",
    "title_canon_sha256": "b06930d86caed8f8f8d0014952b150b028ad804230a5e1d1764d6a70422b9394"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.0782",
    "kind": "arxiv",
    "version": 2
  }
}