Pith Number

pith:QQQT55W3

pith:2013:QQQT55W3NREBNXTACNEHFFGX7G

not attested not anchored not stored refs pending

Copper Replaces Tin: A Copper based Gelling Catalyst for Poly-Urethane from Discarded Motherboard

Arijit Dasgupta, Atharva Sahasrabudhe, Bibudha Parasar, Dandan Yuan, Gao Wen Jing, Peng Wang, Rongxin Yuan, Soumitra Barman, Soumyajit Roy, Wang Kun

arxiv:1307.2671 v1 · 2013-07-10 · 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{QQQT55W3NREBNXTACNEHFFGX7G}

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	2026-05-18T03:18:50.754648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84213ef6db6c4816de6013487294d7f9a14bb03a6a6e1e59898e966999beb7bc

Aliases

arxiv: 1307.2671 · arxiv_version: 1307.2671v1 · doi: 10.48550/arxiv.1307.2671 · pith_short_12: QQQT55W3NREB · pith_short_16: QQQT55W3NREBNXTA · pith_short_8: QQQT55W3

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/QQQT55W3NREBNXTACNEHFFGX7G \
  | 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: 84213ef6db6c4816de6013487294d7f9a14bb03a6a6e1e59898e966999beb7bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28d404e143f2ef7c3ca58438debf0a0904def74ffe67738254aa3b2d56063b05",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2013-07-10T04:48:28Z",
    "title_canon_sha256": "0f5cf193260ee70b03eea1d0da1e85f4595752a2575d8175cf15310ed716cd6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2671",
    "kind": "arxiv",
    "version": 1
  }
}