Pith Number

pith:A6VKOKJJ

pith:2018:A6VKOKJJCESZ7IHA5DMDYNQYYY

not attested not anchored not stored refs pending

A third strike against perfect phylogeny

Leo van Iersel, Mark Jones, Steven Kelk

arxiv:1804.07232 v2 · 2018-04-19 · cs.DM · math.CO · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A6VKOKJJCESZ7IHA5DMDYNQYYY}

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	2026-05-17T23:47:40.038398Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07aaa7292911259fa0e0e8d83c3618c63a37135abf2a0a305b6556764f645eb6

Aliases

arxiv: 1804.07232 · arxiv_version: 1804.07232v2 · doi: 10.48550/arxiv.1804.07232 · pith_short_12: A6VKOKJJCESZ · pith_short_16: A6VKOKJJCESZ7IHA · pith_short_8: A6VKOKJJ

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/A6VKOKJJCESZ7IHA5DMDYNQYYY \
  | 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: 07aaa7292911259fa0e0e8d83c3618c63a37135abf2a0a305b6556764f645eb6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "183f5ff530aafdb58fc16374c2d4aceb70cbbb00131985412e84eafca957b75a",
    "cross_cats_sorted": [
      "math.CO",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2018-04-19T15:31:27Z",
    "title_canon_sha256": "116ff71974d0c7b7a801886ed7c5746c38dcb5a416e6c076bd58052f9098ceb2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.07232",
    "kind": "arxiv",
    "version": 2
  }
}