Pith Number

pith:OTNJXPYT

pith:2012:OTNJXPYT2ALZI7DUTJZVPQ5RDP

not attested not anchored not stored refs pending

SybilControl: Practical Sybil Defense with Computational Puzzles

Frank Li, Matthew Caesar, Nikita Borisov, Prateek Mittal

arxiv:1201.2657 v2 · 2012-01-12 · cs.NI · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OTNJXPYT2ALZI7DUTJZVPQ5RDP}

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	2026-05-18T04:04:43.315439Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74da9bbf13d017947c749a7357c3b11be7a84d925a6caabf65864eae22456a04

Aliases

arxiv: 1201.2657 · arxiv_version: 1201.2657v2 · doi: 10.48550/arxiv.1201.2657 · pith_short_12: OTNJXPYT2ALZ · pith_short_16: OTNJXPYT2ALZI7DU · pith_short_8: OTNJXPYT

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/OTNJXPYT2ALZI7DUTJZVPQ5RDP \
  | 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: 74da9bbf13d017947c749a7357c3b11be7a84d925a6caabf65864eae22456a04

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2bdc82fded8c3c376902eee98e46b1edeb52f1c6e8f68aea7b789ed502d54b76",
    "cross_cats_sorted": [
      "cs.CR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NI",
    "submitted_at": "2012-01-12T19:58:00Z",
    "title_canon_sha256": "3e67c42de3b4b6165c97c48af76cd36131de9f1b077d52116e3cb8b26de7b8f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.2657",
    "kind": "arxiv",
    "version": 2
  }
}