Pith Number

pith:ZSFKTWQE

pith:2021:ZSFKTWQERXP25JNQOPISAODF7Z

not attested not anchored not stored refs pending

A superior two-dimensional nanoporous graphene membrane for hydrogen separation

Humin Duan, Jiaming Luo, Le Shi, Liliang Tian, Yonghong Cheng

arxiv:2107.01434 v1 · 2021-07-03 · physics.app-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{ZSFKTWQERXP25JNQOPISAODF7Z}

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	2026-07-05T02:54:43.158501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc8aa9da048ddfaea5b073d1203865fe519df9bacc6d302f8c14a6318676f3fe

Aliases

arxiv: 2107.01434 · arxiv_version: 2107.01434v1 · doi: 10.48550/arxiv.2107.01434 · pith_short_12: ZSFKTWQERXP2 · pith_short_16: ZSFKTWQERXP25JNQ · pith_short_8: ZSFKTWQE

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/ZSFKTWQERXP25JNQOPISAODF7Z \
  | 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: cc8aa9da048ddfaea5b073d1203865fe519df9bacc6d302f8c14a6318676f3fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74c13d0602b46311a2a42dbf22822dc02d7291865b8b1c398df884f84cc5ac34",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2021-07-03T13:24:35Z",
    "title_canon_sha256": "f0af43de2bc944de282269ea6bf35aeb03d9efb2d17130aa9f05bfe30ea84856"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.01434",
    "kind": "arxiv",
    "version": 1
  }
}