Pith Number

pith:EQZWHGRN

pith:2023:EQZWHGRNHYYIADOHJIFS7REUJQ

not attested not anchored not stored refs pending

Algorithm Instance Footprint: Separating Easily Solvable and Challenging Problem Instances

Ana Nikolikj, Carola Doerr, Mario Andr\'es Mu\~noz, Peter Koro\v{s}ec, Sa\v{s}o D\v{z}eroski, Tome Eftimov

arxiv:2306.00479 v1 · 2023-06-01 · cs.NE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EQZWHGRNHYYIADOHJIFS7REUJQ}

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	2026-07-05T07:43:53.178683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2433639a2d3e30800dc74a0b2fc4944c2f4c0f64922eebcfad73d78ef022a1c7

Aliases

arxiv: 2306.00479 · arxiv_version: 2306.00479v1 · doi: 10.48550/arxiv.2306.00479 · pith_short_12: EQZWHGRNHYYI · pith_short_16: EQZWHGRNHYYIADOH · pith_short_8: EQZWHGRN

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/EQZWHGRNHYYIADOHJIFS7REUJQ \
  | 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: 2433639a2d3e30800dc74a0b2fc4944c2f4c0f64922eebcfad73d78ef022a1c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a88449947e8aecb76f4816ea82fedd98b537505f58cee794255bd95ae661d05d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NE",
    "submitted_at": "2023-06-01T09:28:06Z",
    "title_canon_sha256": "02c0344c56added899b61a2e6dc5a376ee6d9cb50eadb280daad4e353fc0f4c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2306.00479",
    "kind": "arxiv",
    "version": 1
  }
}