Pith Number

pith:QRPADNXI

pith:2019:QRPADNXIH5VPCSBOIOLAXYIP3M

not attested not anchored not stored refs pending

Why Having 10,000 Parameters in Your Camera Model is Better Than Twelve

Marc Pollefeys, Thomas Sch\"ops, Torsten Sattler, Viktor Larsson

arxiv:1912.02908 v3 · 2019-12-05 · 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{QRPADNXIH5VPCSBOIOLAXYIP3M}

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	2026-07-05T01:12:29.809284Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

845e01b6e83f6af1482e43960be10fdb1e79e85e022c0a7908014b1be794624c

Aliases

arxiv: 1912.02908 · arxiv_version: 1912.02908v3 · doi: 10.48550/arxiv.1912.02908 · pith_short_12: QRPADNXIH5VP · pith_short_16: QRPADNXIH5VPCSBO · pith_short_8: QRPADNXI

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/QRPADNXIH5VPCSBOIOLAXYIP3M \
  | 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: 845e01b6e83f6af1482e43960be10fdb1e79e85e022c0a7908014b1be794624c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1804d3ed44848722c4353c4c2f1f92d971a3ca3c7b9a3e8d77cd19ecffdf6bff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-12-05T22:48:50Z",
    "title_canon_sha256": "ad42d11623a6499096f19ee61e1c30c966ffbddbf74a4e0677f73496fd0ade43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.02908",
    "kind": "arxiv",
    "version": 3
  }
}