Pith Number

pith:K7H5EYJY

pith:2020:K7H5EYJYX54RZBIDBIZIREEDVQ

not attested not anchored not stored refs pending

Infrastructure-based Multi-Camera Calibration using Radial Projections

Marcel Geppert, Marc Pollefeys, Torsten Sattler, Viktor Larsson, Yukai Lin, Zuzana Kukelova

arxiv:2007.15330 v2 · 2020-07-30 · cs.CV · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K7H5EYJYX54RZBIDBIZIREEDVQ}

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	2026-07-05T01:35:47.530426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57cfd26138bf791c85030a32889083ac160a4cdde5d3c8500b795851e4a2e4a5

Aliases

arxiv: 2007.15330 · arxiv_version: 2007.15330v2 · doi: 10.48550/arxiv.2007.15330 · pith_short_12: K7H5EYJYX54R · pith_short_16: K7H5EYJYX54RZBID · pith_short_8: K7H5EYJY

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/K7H5EYJYX54RZBIDBIZIREEDVQ \
  | 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: 57cfd26138bf791c85030a32889083ac160a4cdde5d3c8500b795851e4a2e4a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35f75e2db50fae6c965943cf014cb6cbf229996895a2f5a7b0561f9138c325e0",
    "cross_cats_sorted": [
      "cs.RO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-07-30T09:21:04Z",
    "title_canon_sha256": "739020fc7a8a784c5ba9ade3e1888886ce195b43122aa73769a6710282fb4510"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.15330",
    "kind": "arxiv",
    "version": 2
  }
}