Pith Number

pith:ENQ7Q2R6

pith:2014:ENQ7Q2R6BT4NUYBOXMAG6B4OQU

not attested not anchored not stored refs pending

Calibration of Multiple Fish-Eye Cameras Using a Wand

Kai-Yuan Cai, Qiang Fu, Quan Quan

arxiv:1407.1267 v1 · 2014-07-04 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ENQ7Q2R6BT4NUYBOXMAG6B4OQU}

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	2026-05-18T02:48:18.232200Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2361f86a3e0cf8da602ebb006f078e8505527df0a1a0e9e66fc1b58a60b31f96

Aliases

arxiv: 1407.1267 · arxiv_version: 1407.1267v1 · doi: 10.48550/arxiv.1407.1267 · pith_short_12: ENQ7Q2R6BT4N · pith_short_16: ENQ7Q2R6BT4NUYBO · pith_short_8: ENQ7Q2R6

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/ENQ7Q2R6BT4NUYBOXMAG6B4OQU \
  | 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: 2361f86a3e0cf8da602ebb006f078e8505527df0a1a0e9e66fc1b58a60b31f96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4515676f925bd74cc9ec1cb968d51af9094471a630ca4f38bb1c9667025f4058",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2014-07-04T15:58:23Z",
    "title_canon_sha256": "5f6748324ed8b22253d2431d8cb201acbb25bd16f7f7e4a2a9caadf444f7b681"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.1267",
    "kind": "arxiv",
    "version": 1
  }
}