Pith Number

pith:43JYYCBU

pith:2012:43JYYCBU2GNLP4JF7ABL5MBZMX

not attested not anchored not stored refs pending

A coding theory foundation for the analysis of general unconditionally secure proof-of-retrievability schemes for cloud storage

Douglas R. Stinson, Jalaj Upadhyay, Maura B. Paterson

arxiv:1210.7756 v1 · 2012-10-29 · cs.CR · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{43JYYCBU2GNLP4JF7ABL5MBZMX}

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	2026-05-18T03:41:59.431384Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6d38c0834d19ab7f125f802beb03965e49d3ae9f804e7769306802f720de361

Aliases

arxiv: 1210.7756 · arxiv_version: 1210.7756v1 · doi: 10.48550/arxiv.1210.7756 · pith_short_12: 43JYYCBU2GNL · pith_short_16: 43JYYCBU2GNLP4JF · pith_short_8: 43JYYCBU

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/43JYYCBU2GNLP4JF7ABL5MBZMX \
  | 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: e6d38c0834d19ab7f125f802beb03965e49d3ae9f804e7769306802f720de361

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "723b0dc7122e0a6ee2e2ea4ec594bc0210a1d1982ff243df8431f9735d3a6e74",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2012-10-29T18:05:39Z",
    "title_canon_sha256": "7fd58dde57a4fd5e61b6b5e757f77cfe55b2c69dfd4b09b989c483d019f15341"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.7756",
    "kind": "arxiv",
    "version": 1
  }
}