Pith Number

pith:5VLLFZAN

pith:2019:5VLLFZANL4VHNEQ2G64AHFFRHZ

not attested not anchored not stored refs pending

Graphenylene-1 Membrane: An Excellent Candidate for Hydrogen Purification and Helium Separation

Hamid Reza Naeij, Parham Rezaee

arxiv:1909.02112 v2 · 2019-08-14 · cond-mat.mtrl-sci · cond-mat.mes-hall · physics.chem-ph · physics.comp-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{5VLLFZANL4VHNEQ2G64AHFFRHZ}

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	2026-07-05T00:48:18.403569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed56b2e40d5f2a76921a37b80394b13e48a895cb8119b6fa027eaff7123b4c9e

Aliases

arxiv: 1909.02112 · arxiv_version: 1909.02112v2 · doi: 10.48550/arxiv.1909.02112 · pith_short_12: 5VLLFZANL4VH · pith_short_16: 5VLLFZANL4VHNEQ2 · pith_short_8: 5VLLFZAN

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/5VLLFZANL4VHNEQ2G64AHFFRHZ \
  | 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: ed56b2e40d5f2a76921a37b80394b13e48a895cb8119b6fa027eaff7123b4c9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "428e5203946de80a349d9de2b09646f749499dd5aa7cf899c32367636056a5d9",
    "cross_cats_sorted": [
      "cond-mat.mes-hall",
      "physics.chem-ph",
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2019-08-14T14:25:51Z",
    "title_canon_sha256": "e35c5112a5d21b835741fd84845d6be6fcde34e99ff3f2a96fb7557912c50008"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.02112",
    "kind": "arxiv",
    "version": 2
  }
}