Pith Number

pith:C7MHLZTI

pith:2018:C7MHLZTIPWGGBBE3SA5EF6P7IM

not attested not anchored not stored refs pending

Efficient solar collection beyond the etendue limit

Martin P.J. Lavery, Rakan E. Alsaigh, Ralf Bauer

arxiv:1808.06973 v3 · 2018-08-21 · physics.app-ph · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C7MHLZTIPWGGBBE3SA5EF6P7IM}

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	2026-05-18T00:00:29.753194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17d875e6687d8c60849b903a42f9ff430582117a96ab4e4e2bfa98f15af79ab5

Aliases

arxiv: 1808.06973 · arxiv_version: 1808.06973v3 · doi: 10.48550/arxiv.1808.06973 · pith_short_12: C7MHLZTIPWGG · pith_short_16: C7MHLZTIPWGGBBE3 · pith_short_8: C7MHLZTI

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/C7MHLZTIPWGGBBE3SA5EF6P7IM \
  | 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: 17d875e6687d8c60849b903a42f9ff430582117a96ab4e4e2bfa98f15af79ab5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1ba07ec706141d6be107a78526b3eb465863d1fe7791b1fd739e9388c93def5",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.app-ph",
    "submitted_at": "2018-08-21T15:46:34Z",
    "title_canon_sha256": "ca63bf80625d734c23e948f4134bc80f9f6820c0666a4c8f9345df02a21da31f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.06973",
    "kind": "arxiv",
    "version": 3
  }
}