Pith Number

pith:GOMPUG46

pith:2012:GOMPUG464ZHLZBF3ZYGELAH5IU

not attested not anchored not stored refs pending

A new point of NP-hardness for 2-to-1 Label Cover

John Wright, Per Austrin, Ryan O'Donnell

arxiv:1204.5666 v1 · 2012-04-25 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GOMPUG464ZHLZBF3ZYGELAH5IU}

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	2026-05-18T03:57:01.705046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3398fa1b9ee64ebc84bbce0c4580fd452ad7ea78bc564b063859021ff28df480

Aliases

arxiv: 1204.5666 · arxiv_version: 1204.5666v1 · doi: 10.48550/arxiv.1204.5666 · pith_short_12: GOMPUG464ZHL · pith_short_16: GOMPUG464ZHLZBF3 · pith_short_8: GOMPUG46

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/GOMPUG464ZHLZBF3ZYGELAH5IU \
  | 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: 3398fa1b9ee64ebc84bbce0c4580fd452ad7ea78bc564b063859021ff28df480

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "70e600eb91c8fdf48b6cf3f4495d2387885d1b6e9e94283dd63210a5320be46f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2012-04-25T14:20:23Z",
    "title_canon_sha256": "24459e23a67e614af25f994d02a72e5e09d49acc8bee79cbba650f7526743b2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5666",
    "kind": "arxiv",
    "version": 1
  }
}