Pith Number

pith:S3KJH6KZ

pith:2015:S3KJH6KZ3TLIXWBM7H7TXKWXIY

not attested not anchored not stored refs pending

Ricci-Ollivier Curvature of the Rooted Phylogenetic Subtree-Prune-Regraft Graph

Chris Whidden, Frederick A. Matsen IV

arxiv:1504.00304 v3 · 2015-04-01 · cs.DM · cs.CE · 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{S3KJH6KZ3TLIXWBM7H7TXKWXIY}

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	2026-05-18T01:27:54.364788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

96d493f959dcd68bd82cf9ff3baad746238dd865d6426feb842d8386abe4ad3d

Aliases

arxiv: 1504.00304 · arxiv_version: 1504.00304v3 · doi: 10.48550/arxiv.1504.00304 · pith_short_12: S3KJH6KZ3TLI · pith_short_16: S3KJH6KZ3TLIXWBM · pith_short_8: S3KJH6KZ

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/S3KJH6KZ3TLIXWBM7H7TXKWXIY \
  | 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: 96d493f959dcd68bd82cf9ff3baad746238dd865d6426feb842d8386abe4ad3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d822b610f4476c5d878783f731a6597fb4b7da891b64e2d84ebcb53af679b28",
    "cross_cats_sorted": [
      "cs.CE",
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2015-04-01T17:24:29Z",
    "title_canon_sha256": "9ee4d85abd40192ba449f3d5ad07527f733e998dbd2f37a42a5459ecb815f85f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.00304",
    "kind": "arxiv",
    "version": 3
  }
}