Pith Number

pith:2OE5JVXU

pith:2017:2OE5JVXU4CIBDOE6MGK35R433F

not attested not anchored not stored refs pending

Protection Number in Plane Trees

Clemens Heuberger, Helmut Prodinger

arxiv:1702.06816 v1 · 2017-02-22 · 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{2OE5JVXU4CIBDOE6MGK35R433F}

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	2026-05-18T00:27:36.356888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d389d4d6f4e09011b89e6195bec79bd97a746878cc8067ab1246b84a7355ea24

Aliases

arxiv: 1702.06816 · arxiv_version: 1702.06816v1 · doi: 10.48550/arxiv.1702.06816 · pith_short_12: 2OE5JVXU4CIB · pith_short_16: 2OE5JVXU4CIBDOE6 · pith_short_8: 2OE5JVXU

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/2OE5JVXU4CIBDOE6MGK35R433F \
  | 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: d389d4d6f4e09011b89e6195bec79bd97a746878cc8067ab1246b84a7355ea24

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2487d239b60546627797773ea5921b23389cd3aa75e1587f8f12e03b25466ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-02-22T14:37:27Z",
    "title_canon_sha256": "ccc3ca3602a7e915ab6765b49691bee0ddfce9892de6cf5d55e89160bd5f5b18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.06816",
    "kind": "arxiv",
    "version": 1
  }
}