Pith Number

pith:AIQZM2TU

pith:2013:AIQZM2TULE7QFDNWHV3EV5KQYA

not attested not anchored not stored refs pending

Parameter Estimates for a Polymer Electrolyte Membrane Fuel Cell Cathode

Qingzhi Guo, Ralph E. White, Vijay A. Sethuraman

arxiv:1308.4590 v1 · 2013-08-21 · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AIQZM2TULE7QFDNWHV3EV5KQYA}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:15:21.574303Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0221966a74593f028db63d764af550c02e50016c2e4b1fb2bb0c6cb894d8c8fd

Aliases

arxiv: 1308.4590 · arxiv_version: 1308.4590v1 · doi: 10.48550/arxiv.1308.4590 · pith_short_12: AIQZM2TULE7Q · pith_short_16: AIQZM2TULE7QFDNW · pith_short_8: AIQZM2TU

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/AIQZM2TULE7QFDNWHV3EV5KQYA \
  | 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: 0221966a74593f028db63d764af550c02e50016c2e4b1fb2bb0c6cb894d8c8fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29ef3f105dcebd9809ba645d4e25a873224343fd8ac303203699d8156f9c5fe9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2013-08-21T14:16:45Z",
    "title_canon_sha256": "286debb8d8a1576cb364e91a6f71cd4016eefd722fb9db0599e4dcf9b9bc32ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.4590",
    "kind": "arxiv",
    "version": 1
  }
}