Pith Number

pith:XKRJ4DDL

pith:2016:XKRJ4DDLCYUFDNDFAEJ25ZGZKJ

not attested not anchored not stored refs pending

Counting Contours on Trees

Eric Ossami Endo, Noga Alon, Rodrigo Bissacot

arxiv:1607.00804 v1 · 2016-07-04 · 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{XKRJ4DDLCYUFDNDFAEJ25ZGZKJ}

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	2026-05-18T00:54:35.793430Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

baa29e0c6b162851b4650113aee4d9525b7200a6f042dc558e8c8ab73d390c09

Aliases

arxiv: 1607.00804 · arxiv_version: 1607.00804v1 · doi: 10.48550/arxiv.1607.00804 · pith_short_12: XKRJ4DDLCYUF · pith_short_16: XKRJ4DDLCYUFDNDF · pith_short_8: XKRJ4DDL

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/XKRJ4DDLCYUFDNDFAEJ25ZGZKJ \
  | 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: baa29e0c6b162851b4650113aee4d9525b7200a6f042dc558e8c8ab73d390c09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fd1d7c48484b25ee919d7bb584f167afadfc075cd760a323f7d8c4179c225c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-07-04T09:54:18Z",
    "title_canon_sha256": "7cd33b817ab9f693435da7f18566b6bd7949e9c95c04e5d62c380f747a671d42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.00804",
    "kind": "arxiv",
    "version": 1
  }
}