Pith Number

pith:QRWFD7JD

pith:2018:QRWFD7JD3V24TLKMUEW6VJBSLW

not attested not anchored not stored refs pending

Performance analysis of a direct-absorption parabolic trough solar collector

Bong Jae Lee, Caiyan Qin, Joong Bae Kim

arxiv:1810.08801 v1 · 2018-10-20 · 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{QRWFD7JD3V24TLKMUEW6VJBSLW}

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	2026-05-17T23:44:30.129626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

846c51fd23dd75c9ad4ca12deaa4325db03a26283efbee6d9665fd38a5a23c88

Aliases

arxiv: 1810.08801 · arxiv_version: 1810.08801v1 · doi: 10.48550/arxiv.1810.08801 · pith_short_12: QRWFD7JD3V24 · pith_short_16: QRWFD7JD3V24TLKM · pith_short_8: QRWFD7JD

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/QRWFD7JD3V24TLKMUEW6VJBSLW \
  | 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: 846c51fd23dd75c9ad4ca12deaa4325db03a26283efbee6d9665fd38a5a23c88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "037e36e50a1388d08e736ed10c791442a1975b54b4b5f045ffd3168434da5b5d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2018-10-20T13:23:32Z",
    "title_canon_sha256": "4a8699caa3d1328861f7423bd6bef1ad268ead5b179836c6008655e386a3596b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.08801",
    "kind": "arxiv",
    "version": 1
  }
}