Pith Number

pith:Y4LSMNRO

pith:2011:Y4LSMNROS23CEENRPNR2AS6MCI

not attested not anchored not stored refs pending

TIM, ray-tracing program for forbidden optics

Alasdair C. Hamilton, Dean Lambert, George Constable, Harsh Snehanshu, Johannes Courtial, Sharvil Talati

arxiv:1101.3861 v2 · 2011-01-20 · 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{Y4LSMNROS23CEENRPNR2AS6MCI}

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	2026-05-18T02:22:51.109062Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c71726362e96b62211b17b63a04bcc120d69b01cd2476072cdecb8defd94edfc

Aliases

arxiv: 1101.3861 · arxiv_version: 1101.3861v2 · doi: 10.48550/arxiv.1101.3861 · pith_short_12: Y4LSMNROS23C · pith_short_16: Y4LSMNROS23CEENR · pith_short_8: Y4LSMNRO

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/Y4LSMNROS23CEENRPNR2AS6MCI \
  | 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: c71726362e96b62211b17b63a04bcc120d69b01cd2476072cdecb8defd94edfc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "156c7e1a880ce028a92771a96c81355c5a6d1d42c560716152497549d35d60e4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2011-01-20T10:19:19Z",
    "title_canon_sha256": "b978ee9dd5808887f0aee1644a6d751ef3d5ea57687a183db0972d1fcb3c2a7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.3861",
    "kind": "arxiv",
    "version": 2
  }
}