Pith Number

pith:WXH2F44R

pith:2021:WXH2F44RFNPMGUIVB75DE7P5I4

not attested not anchored not stored refs pending

Square Root Bundle Adjustment for Large-Scale Reconstruction

Christiane Sommer, Daniel Cremers, Nikolaus Demmel, Vladyslav Usenko

arxiv:2103.01843 v2 · 2021-03-02 · 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{WXH2F44RFNPMGUIVB75DE7P5I4}

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	2026-07-05T03:33:40.677671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5cfa2f3912b5ec351150ffa327dfd4706304406e452e43bb6f290932ccfec8a

Aliases

arxiv: 2103.01843 · arxiv_version: 2103.01843v2 · doi: 10.48550/arxiv.2103.01843 · pith_short_12: WXH2F44RFNPM · pith_short_16: WXH2F44RFNPMGUIV · pith_short_8: WXH2F44R

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/WXH2F44RFNPMGUIVB75DE7P5I4 \
  | 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: b5cfa2f3912b5ec351150ffa327dfd4706304406e452e43bb6f290932ccfec8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9d388ec488c8bce6cc92e03d489bb1963b453481c37b8f5d80b6d2371cfccb3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-03-02T16:26:20Z",
    "title_canon_sha256": "9ab4c98184e078618f8e473ea87f3a96738bcf732f89641f8c25b46b0c0c95e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.01843",
    "kind": "arxiv",
    "version": 2
  }
}