Pith Number

pith:ADQ6KGB2

pith:2016:ADQ6KGB2CO2NZRUVFKUVFX5LX4

not attested not anchored not stored refs pending

Reconstruction of a conic-section surface from autocollimator-based deflectometric profilometry

Gareth W. Roberts, Paul Rees, Richard Lang, Samantha J. Thompson

arxiv:1604.08090 v1 · 2016-04-27 · physics.optics · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ADQ6KGB2CO2NZRUVFKUVFX5LX4}

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	2026-05-18T01:16:08.165930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00e1e5183a13b4dcc6952aa952dfabbf056df85013b774372a4a468aed551035

Aliases

arxiv: 1604.08090 · arxiv_version: 1604.08090v1 · doi: 10.48550/arxiv.1604.08090 · pith_short_12: ADQ6KGB2CO2N · pith_short_16: ADQ6KGB2CO2NZRUV · pith_short_8: ADQ6KGB2

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/ADQ6KGB2CO2NZRUVFKUVFX5LX4 \
  | 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: 00e1e5183a13b4dcc6952aa952dfabbf056df85013b774372a4a468aed551035

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50f6d7f966b4ed1dc3fedb08af6f64cf6d54a93c8bab928539693d1a3fcb5e07",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2016-04-27T14:35:10Z",
    "title_canon_sha256": "66c34d24b031fad2c1e8ad006f62ab473e8638e565acdf6dec9aae272ceaddad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.08090",
    "kind": "arxiv",
    "version": 1
  }
}