Pith Number

pith:XA3QHA2X

pith:2011:XA3QHA2XKU44G44ZTDW5B6EL7J

not attested not anchored not stored refs pending

Hardness of Mastermind

Giovanni Viglietta

arxiv:1111.6922 v2 · 2011-11-29 · cs.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XA3QHA2XKU44G44ZTDW5B6EL7J}

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	2026-05-18T04:00:13.317995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8370383575539c3739998edd0f88bfa4359167b9ec8b9d3435846e1bc769161

Aliases

arxiv: 1111.6922 · arxiv_version: 1111.6922v2 · doi: 10.48550/arxiv.1111.6922 · pith_short_12: XA3QHA2XKU44 · pith_short_16: XA3QHA2XKU44G44Z · pith_short_8: XA3QHA2X

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/XA3QHA2XKU44G44ZTDW5B6EL7J \
  | 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: b8370383575539c3739998edd0f88bfa4359167b9ec8b9d3435846e1bc769161

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91b7a2363e7e76a9e6ecdcdb3cb62484ea3c70632d11e56bcf8d94ee10ac33ca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.GT",
    "submitted_at": "2011-11-29T18:30:12Z",
    "title_canon_sha256": "48160ed42870a8ae5a4c688d42268125bd6bb3a37566117dd6ee9783ac3b2cf2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.6922",
    "kind": "arxiv",
    "version": 2
  }
}