Pith Number

pith:UY2AD5LQ

pith:2015:UY2AD5LQUL4ZKE4SE5YKX6XPYZ

not attested not anchored not stored refs pending

The Complexity of Phylogeny Constraint Satisfaction Problems

Manuel Bodirsky, Peter Jonsson, Trung Van Pham

arxiv:1503.07310 v5 · 2015-03-25 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UY2AD5LQUL4ZKE4SE5YKX6XPYZ}

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	2026-05-18T00:38:11.913070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a63401f570a2f99513922770abfaefc64c2fee01ea14a9c5133d67bbd682ff1f

Aliases

arxiv: 1503.07310 · arxiv_version: 1503.07310v5 · doi: 10.48550/arxiv.1503.07310 · pith_short_12: UY2AD5LQUL4Z · pith_short_16: UY2AD5LQUL4ZKE4S · pith_short_8: UY2AD5LQ

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/UY2AD5LQUL4ZKE4SE5YKX6XPYZ \
  | 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: a63401f570a2f99513922770abfaefc64c2fee01ea14a9c5133d67bbd682ff1f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca6b8070d8929100d5dd4247530ec6e1b4b767787a4276427d9f49e4c806d3f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-03-25T09:18:40Z",
    "title_canon_sha256": "7f0f11158c53a8e5ad6984a1c7e41e632b873af081614e01c5ffc51df1f0135d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.07310",
    "kind": "arxiv",
    "version": 5
  }
}