Pith Number

pith:FI25KY27

pith:2026:FI25KY27SZP67IZWPMA5ZBKQ5E

not attested not anchored not stored refs pending

Bidirectional Search for Longest Paths: Case for Front-to-Front Heuristics

Ariel Felner, Shahaf S. Shperberg, Solomon Eyal Shimony, Tzur Shubi

arxiv:2606.05956 v1 · 2026-06-04 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FI25KY27SZP67IZWPMA5ZBKQ5E}

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	2026-06-05T01:15:28.749291Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a35d5635f965fefa3367b01dc8550e9331ea541d500215521f1b62e5135104c

Aliases

arxiv: 2606.05956 · arxiv_version: 2606.05956v1 · doi: 10.48550/arxiv.2606.05956 · pith_short_12: FI25KY27SZP6 · pith_short_16: FI25KY27SZP67IZW · pith_short_8: FI25KY27

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/FI25KY27SZP67IZWPMA5ZBKQ5E \
  | 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: 2a35d5635f965fefa3367b01dc8550e9331ea541d500215521f1b62e5135104c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "221a426fd09875f4be47f8809d455ae9a6b78822197fa445169f3ad1e42886ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-06-04T09:53:18Z",
    "title_canon_sha256": "a8ef478454f815c2537efd86ae3a81100ef69c32596dd33d9b063f9ffe73fe17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.05956",
    "kind": "arxiv",
    "version": 1
  }
}