Pith Number

pith:DN6ADNL2

pith:2012:DN6ADNL2NLCGY7PSRRHQYEZDQY

not attested not anchored not stored refs pending

Autocalibration with the Minimum Number of Cameras with Known Pixel Shape

Antonio Vald\'es, Guillermo Gallego, Jos\'e I. Ronda

arxiv:1203.0905 v2 · 2012-03-05 · 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{DN6ADNL2NLCGY7PSRRHQYEZDQY}

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	2026-05-17T23:56:04.197751Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b7c01b57a6ac46c7df28c4f0c13238612d324cbf053c69bf4e220598585fb86

Aliases

arxiv: 1203.0905 · arxiv_version: 1203.0905v2 · doi: 10.48550/arxiv.1203.0905 · pith_short_12: DN6ADNL2NLCG · pith_short_16: DN6ADNL2NLCGY7PS · pith_short_8: DN6ADNL2

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/DN6ADNL2NLCGY7PSRRHQYEZDQY \
  | 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: 1b7c01b57a6ac46c7df28c4f0c13238612d324cbf053c69bf4e220598585fb86

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e01205e51eeac6c05dc79220e78dce7076e87c1a1f2a1ccd1149bba16c68de3d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-03-05T13:18:44Z",
    "title_canon_sha256": "23cf7f8df0aa6c578d9a9988c41411ff283fe564de11064a8079339bfa5744cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0905",
    "kind": "arxiv",
    "version": 2
  }
}