Pith Number

pith:DU7YS6NC

pith:2014:DU7YS6NCO4YB2OAEQQAEG4KSOS

not attested not anchored not stored refs pending

Declaratively solving tricky Google Code Jam problems with Prolog-based ECLiPSe CLP system

Mariia Mykhailova, Sergii Dymchenko

arxiv:1412.2304 v2 · 2014-12-07 · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DU7YS6NCO4YB2OAEQQAEG4KSOS}

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	2026-05-18T02:31:20.262601Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d3f8979a277301d38048400437152748713162e2e6803b0945ce1340796929e

Aliases

arxiv: 1412.2304 · arxiv_version: 1412.2304v2 · doi: 10.48550/arxiv.1412.2304 · pith_short_12: DU7YS6NCO4YB · pith_short_16: DU7YS6NCO4YB2OAE · pith_short_8: DU7YS6NC

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/DU7YS6NCO4YB2OAEQQAEG4KSOS \
  | 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: 1d3f8979a277301d38048400437152748713162e2e6803b0945ce1340796929e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8c6a2f873c3938e1a8ed1b3650dc813c8a2dbb9bbfa87631273efc329341934",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2014-12-07T02:24:21Z",
    "title_canon_sha256": "1cefc53122a2cb8dd015cdc9fc47a71f06da4cb6bf3ea1854c11f7b4f32d9ac8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.2304",
    "kind": "arxiv",
    "version": 2
  }
}