Pith Number

pith:67EOHIUC

pith:2013:67EOHIUCERUO2LXRG6R5CFH7OK

not attested not anchored not stored refs pending

On the edge-reconstruction number of a tree

Josef Lauri, Kevin Asciak, Virgilio Pannone, Wendy Myrvold

arxiv:1312.1234 v1 · 2013-12-04 · 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{67EOHIUCERUO2LXRG6R5CFH7OK}

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	2026-05-18T03:05:34.583921Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f7c8e3a2822468ed2ef137a3d114ff728811b7c556cc9b3207d37aca4f8dda8f

Aliases

arxiv: 1312.1234 · arxiv_version: 1312.1234v1 · doi: 10.48550/arxiv.1312.1234 · pith_short_12: 67EOHIUCERUO · pith_short_16: 67EOHIUCERUO2LXR · pith_short_8: 67EOHIUC

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/67EOHIUCERUO2LXRG6R5CFH7OK \
  | 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: f7c8e3a2822468ed2ef137a3d114ff728811b7c556cc9b3207d37aca4f8dda8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d3b371054df3806c1a4ff82afd22ce9dd7b9ecb27b6d2c731bfeeb5955c7750",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-12-04T16:22:38Z",
    "title_canon_sha256": "76204b4fe20f9dc3435d3a48894e31d86ab5dda024ba2eaf970a774f3c24629d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.1234",
    "kind": "arxiv",
    "version": 1
  }
}