Pith Number

pith:WPQI4CKS

pith:2015:WPQI4CKSE4HWTSPQAUODEZX6DX

not attested not anchored not stored refs pending

Analysis of ZDDP content and thermal decomposition in motor oils using NAA and NMR

C. Allen, C. Hobbs, D. Gonzales, J. Johnson, S. Ferguson, S. Williams

arxiv:1502.07261 v1 · 2015-02-23 · 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{WPQI4CKSE4HWTSPQAUODEZX6DX}

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	2026-05-18T01:37:29.783800Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3e08e0952270f69c9f0051c3266fe1dc91d4243def927c5a3182e3d4a383fa6

Aliases

arxiv: 1502.07261 · arxiv_version: 1502.07261v1 · doi: 10.48550/arxiv.1502.07261 · pith_short_12: WPQI4CKSE4HW · pith_short_16: WPQI4CKSE4HWTSPQ · pith_short_8: WPQI4CKS

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/WPQI4CKSE4HWTSPQAUODEZX6DX \
  | 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: b3e08e0952270f69c9f0051c3266fe1dc91d4243def927c5a3182e3d4a383fa6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c242219a24f09356006f415f24518be4959693b5a836f2b14aeb04f394b36dd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2015-02-23T02:05:19Z",
    "title_canon_sha256": "6780a60a0cd657394f36588a4ccaa14323fafe0d950a755c6ff36d4e92e94644"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.07261",
    "kind": "arxiv",
    "version": 1
  }
}