Pith Number

pith:6O3KGEPK

pith:2026:6O3KGEPKQIHQXOFNLI7OIQARHO

not attested not anchored not stored refs pending

Computing the Arc-Deletion Distance to Orchard Networks is NP-hard

Peng Li, Yangjing Long, Zhiwei Liu

arxiv:2605.19962 v1 · 2026-05-19 · q-bio.PE · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6O3KGEPKQIHQXOFNLI7OIQARHO}

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	2026-05-20T02:05:57.185056Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f3b6a311ea820f0bb8ad5a3ee440113b90fe2e6785555f23deeefbb5a53b38b6

Aliases

arxiv: 2605.19962 · arxiv_version: 2605.19962v1 · doi: 10.48550/arxiv.2605.19962 · pith_short_12: 6O3KGEPKQIHQ · pith_short_16: 6O3KGEPKQIHQXOFN · pith_short_8: 6O3KGEPK

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/6O3KGEPKQIHQXOFNLI7OIQARHO \
  | 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: f3b6a311ea820f0bb8ad5a3ee440113b90fe2e6785555f23deeefbb5a53b38b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5cf0c148a32e03105704beaf60d4194ac07848f219ccadcf10ee983b1663165",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2026-05-19T15:14:30Z",
    "title_canon_sha256": "5df6439663a2290dc2237d09af7e4fc999670d907e7dca9fd36dd0f7e26b2a11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.19962",
    "kind": "arxiv",
    "version": 1
  }
}