Pith Number

pith:4OJNKVSL

pith:2019:4OJNKVSLZDNBNXR2FKYR4T432X

not attested not anchored not stored refs pending

Perfect proton selectivity in ion transport through two-dimensional crystals

A. K. Geim, B. L. Liu, D. Barry, G.-P. Hao, H. M. Cheng, K. Gopinadhan, L. Mogg, M. Lozada-Hidalgo, S. Zhang

arxiv:1908.07852 v2 · 2019-08-21 · physics.app-ph · cond-mat.mes-hall

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4OJNKVSLZDNBNXR2FKYR4T432X}

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	2026-07-05T00:05:25.102799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e392d5564bc8da16de3a2ab11e4f9bd5e390fe02fbc0a843650be1ccb7e2f026

Aliases

arxiv: 1908.07852 · arxiv_version: 1908.07852v2 · doi: 10.48550/arxiv.1908.07852 · pith_short_12: 4OJNKVSLZDNB · pith_short_16: 4OJNKVSLZDNBNXR2 · pith_short_8: 4OJNKVSL

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/4OJNKVSLZDNBNXR2FKYR4T432X \
  | 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: e392d5564bc8da16de3a2ab11e4f9bd5e390fe02fbc0a843650be1ccb7e2f026

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68552999639e1eeb5fc38abeea86ec06dea81173578b3b2b6a5130de0d00a9b9",
    "cross_cats_sorted": [
      "cond-mat.mes-hall"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2019-08-21T13:09:13Z",
    "title_canon_sha256": "08e488906f10aaad337e55bdde5cc5c66290132f58748c30b46303d2f1a3f050"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.07852",
    "kind": "arxiv",
    "version": 2
  }
}