Pith Number

pith:NJ37GMS7

pith:2014:NJ37GMS7CWPRQUYNAURMAE3ZOJ

not attested not anchored not stored refs pending

The impossibility of obfuscation with auxiliary input or a universal simulator

Alon Rosen, Henry Cohn, Nir Bitansky, Omer Paneth, Ran Canetti, Shafi Goldwasser, Yael Tauman Kalai

arxiv:1401.0348 v3 · 2014-01-01 · 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{NJ37GMS7CWPRQUYNAURMAE3ZOJ}

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	2026-05-18T02:59:08.350326Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a77f3325f159f18530d0522c01379725159c799057e086891f3356b105aafe6

Aliases

arxiv: 1401.0348 · arxiv_version: 1401.0348v3 · doi: 10.48550/arxiv.1401.0348 · pith_short_12: NJ37GMS7CWPR · pith_short_16: NJ37GMS7CWPRQUYN · pith_short_8: NJ37GMS7

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/NJ37GMS7CWPRQUYNAURMAE3ZOJ \
  | 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: 6a77f3325f159f18530d0522c01379725159c799057e086891f3356b105aafe6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09aeb338f98766c92012c7051f259ccfbba598e955505a74d55722723f1122e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2014-01-01T23:18:36Z",
    "title_canon_sha256": "e8a3d012f1708c2be3434855bd6dc22af69f3336734b8de05d4b94594a421074"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.0348",
    "kind": "arxiv",
    "version": 3
  }
}