Pith Number

pith:3M4HA3AD

pith:2016:3M4HA3ADNEEQJ763EWVCRCNLCI

not attested not anchored not stored refs pending

Evolution of the free volume between rough surfaces in contact

M. Paggi, Q.-C. He

arxiv:1604.05215 v1 · 2016-04-18 · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3M4HA3ADNEEQJ763EWVCRCNLCI}

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	2026-05-18T01:16:55.300944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db38706c03690904ffdb25aa2889ab122155ad978e25db82406f5c1b1e06dcb8

Aliases

arxiv: 1604.05215 · arxiv_version: 1604.05215v1 · doi: 10.48550/arxiv.1604.05215 · pith_short_12: 3M4HA3ADNEEQ · pith_short_16: 3M4HA3ADNEEQJ763 · pith_short_8: 3M4HA3AD

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/3M4HA3ADNEEQJ763EWVCRCNLCI \
  | 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: db38706c03690904ffdb25aa2889ab122155ad978e25db82406f5c1b1e06dcb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d97fcc466263b9e4faf582f22388e8b6a9918ffd6e863a224182273897360a6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2016-04-18T15:41:50Z",
    "title_canon_sha256": "019b57987b36578085f863553daef5c5a3f7840bfdcb3766a397317b47ce8684"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.05215",
    "kind": "arxiv",
    "version": 1
  }
}