Pith Number

pith:U56YMJPT

pith:2015:U56YMJPTHGEMA6TTOJS5MZKJBS

not attested not anchored not stored refs pending

The contact mechanics challenge: Problem definition

Martin H. M\"user, Wolf B. Dapp

arxiv:1512.02403 v1 · 2015-12-08 · cond-mat.soft

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U56YMJPTHGEMA6TTOJS5MZKJBS}

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	2026-05-18T01:24:44.759904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a77d8625f33988c07a737265d665490c98bc38249dd64fed6a181cab2f0d4e9a

Aliases

arxiv: 1512.02403 · arxiv_version: 1512.02403v1 · doi: 10.48550/arxiv.1512.02403 · pith_short_12: U56YMJPTHGEM · pith_short_16: U56YMJPTHGEMA6TT · pith_short_8: U56YMJPT

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/U56YMJPTHGEMA6TTOJS5MZKJBS \
  | 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: a77d8625f33988c07a737265d665490c98bc38249dd64fed6a181cab2f0d4e9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b086c4c536f539840ea8a2779fe4ff9828e5e5147ebc994b962541253770c33",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.soft",
    "submitted_at": "2015-12-08T11:07:29Z",
    "title_canon_sha256": "48de83fc0191a97344a8b94de1cde573985f73b502b6b51dc3bbeb1b3ec034d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.02403",
    "kind": "arxiv",
    "version": 1
  }
}