Pith Number

pith:IYYSSPPF

pith:2017:IYYSSPPFMHM6QNXTVOWAORC2BG

not attested not anchored not stored refs pending

Conflict-free connection of trees

Hong Chang, Jingshu Zhang, Meng Ji, Xueliang Li

arxiv:1712.10010 v2 · 2017-12-25 · math.CO · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IYYSSPPFMHM6QNXTVOWAORC2BG}

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	2026-05-18T00:15:41.831432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4631293de561d9e836f3abac07445a0989e12ae27c00f0957111e3dc426c691f

Aliases

arxiv: 1712.10010 · arxiv_version: 1712.10010v2 · doi: 10.48550/arxiv.1712.10010 · pith_short_12: IYYSSPPFMHM6 · pith_short_16: IYYSSPPFMHM6QNXT · pith_short_8: IYYSSPPF

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/IYYSSPPFMHM6QNXTVOWAORC2BG \
  | 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: 4631293de561d9e836f3abac07445a0989e12ae27c00f0957111e3dc426c691f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c01f114ebe53c80c30f59ce142c080d639a852f73f353a180e14fcb53b1c225",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-12-25T03:50:48Z",
    "title_canon_sha256": "57b303ed5be0d27559d83902122141ac06fc1b7593638d37aeb65a50a5fbd236"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.10010",
    "kind": "arxiv",
    "version": 2
  }
}