Pith Number

pith:VQJDAGN4

pith:2019:VQJDAGN4NRYCYPHEUY3EDUCXYL

not attested not anchored not stored refs pending

Reconstruction of time-consistent species trees

Manuel Lafond, Marc Hellmuth

arxiv:1910.13123 v1 · 2019-10-29 · cs.DM · cs.DS · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VQJDAGN4NRYCYPHEUY3EDUCXYL}

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	2026-07-05T00:15:27.162007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac123019bc6c702c3ce4a63641d057c2ef9d1b0714eb88a6edbfeb5e1c066acd

Aliases

arxiv: 1910.13123 · arxiv_version: 1910.13123v1 · doi: 10.48550/arxiv.1910.13123 · pith_short_12: VQJDAGN4NRYC · pith_short_16: VQJDAGN4NRYCYPHE · pith_short_8: VQJDAGN4

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/VQJDAGN4NRYCYPHEUY3EDUCXYL \
  | 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: ac123019bc6c702c3ce4a63641d057c2ef9d1b0714eb88a6edbfeb5e1c066acd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "976068ba1ba7cd952f19023b908689308903f0965c395d903fad0106766ae1a8",
    "cross_cats_sorted": [
      "cs.DS",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2019-10-29T07:50:53Z",
    "title_canon_sha256": "a351a753b23a4fce68eb7813342b98596b717ca168e7cb6283b74e120e0a392c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.13123",
    "kind": "arxiv",
    "version": 1
  }
}