Pith Number

pith:KV6CDOED

pith:2013:KV6CDOEDCX4Z5UQ7S7VXSHUOAD

not attested not anchored not stored refs pending

Near-optimal labeling schemes for nearest common ancestors

Esben Bistrup Halvorsen, Kasper Green Larsen, Stephen Alstrup

arxiv:1312.4413 v1 · 2013-12-16 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KV6CDOEDCX4Z5UQ7S7VXSHUOAD}

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	2026-05-18T02:18:31.718277Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

557c21b88315f99ed21f97eb791e8e00f40e63b2bc05f5a667ab2d9b0263e3c9

Aliases

arxiv: 1312.4413 · arxiv_version: 1312.4413v1 · doi: 10.48550/arxiv.1312.4413 · pith_short_12: KV6CDOEDCX4Z · pith_short_16: KV6CDOEDCX4Z5UQ7 · pith_short_8: KV6CDOED

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/KV6CDOEDCX4Z5UQ7S7VXSHUOAD \
  | 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: 557c21b88315f99ed21f97eb791e8e00f40e63b2bc05f5a667ab2d9b0263e3c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dcadc237e46695ba78c233b65d0eb15216e5b34f7ac780bbb2f80da61f6870af",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-12-16T15:55:03Z",
    "title_canon_sha256": "b20871e370bdb45b104ecc522e6433b903aa0d03c8aae2fd13444134133617a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.4413",
    "kind": "arxiv",
    "version": 1
  }
}