Pith Number

pith:DT2CO2CK

pith:2010:DT2CO2CKW5ASW7QI3LMWP4MSKG

not attested not anchored not stored refs pending

The ancient art of laying rope

Jakob Bohr, Kasper Olsen

arxiv:1004.0814 v3 · 2010-04-06 · physics.pop-ph · math-ph · math.MP · physics.gen-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DT2CO2CKW5ASW7QI3LMWP4MSKG}

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	2026-05-18T02:24:17.378734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cf427684ab7412b7e08dad967f1925182916e855ce0dbeba8942bbc97c1605f

Aliases

arxiv: 1004.0814 · arxiv_version: 1004.0814v3 · doi: 10.48550/arxiv.1004.0814 · pith_short_12: DT2CO2CKW5AS · pith_short_16: DT2CO2CKW5ASW7QI · pith_short_8: DT2CO2CK

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/DT2CO2CKW5ASW7QI3LMWP4MSKG \
  | 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: 1cf427684ab7412b7e08dad967f1925182916e855ce0dbeba8942bbc97c1605f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d21d35e8fa85e02fe2382a2c59258cd70e7d359d1eafeeab6e90e446cddaf595",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "physics.gen-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2010-04-06T10:08:55Z",
    "title_canon_sha256": "393a805850eb197a578810f5851eecbda2a3ed952f9a620a273998c57398443b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.0814",
    "kind": "arxiv",
    "version": 3
  }
}