Pith Number

pith:ZT4NJBTT

pith:2013:ZT4NJBTTUY4R4BHSIXPTJCUABB

not attested not anchored not stored refs pending

A Minimal Six-Point Auto-Calibration Algorithm

Evgeniy Martyushev

arxiv:1307.3759 v1 · 2013-07-14 · 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{ZT4NJBTTUY4R4BHSIXPTJCUABB}

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	2026-05-18T02:37:58.927384Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccf8d48673a6391e04f245df348a80087b272053bce96be5e23ed1a967da63c3

Aliases

arxiv: 1307.3759 · arxiv_version: 1307.3759v1 · doi: 10.48550/arxiv.1307.3759 · pith_short_12: ZT4NJBTTUY4R · pith_short_16: ZT4NJBTTUY4R4BHS · pith_short_8: ZT4NJBTT

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/ZT4NJBTTUY4R4BHSIXPTJCUABB \
  | 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: ccf8d48673a6391e04f245df348a80087b272053bce96be5e23ed1a967da63c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6cbe25783f5465cd155f3535995a63d02686f43bab667e1b78b169d301e43e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2013-07-14T17:37:36Z",
    "title_canon_sha256": "e43acb100630c93ffd4b89839ca6b4681bb6dd21dcd35b79f59a6bf98cb9cf89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.3759",
    "kind": "arxiv",
    "version": 1
  }
}