Pith Number

pith:4NK5R46P

pith:2021:4NK5R46PMMKY32N7545CW3Z4WL

not attested not anchored not stored refs pending

iMAP: Implicit Mapping and Positioning in Real-Time

Andrew J. Davison, Edgar Sucar, Joseph Ortiz, Shikun Liu

arxiv:2103.12352 v2 · 2021-03-23 · 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{4NK5R46PMMKY32N7545CW3Z4WL}

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	2026-07-05T03:13:26.200825Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e355d8f3cf63158de9bfef3a2b6f3cb2c5863f0e7890c2974b6827631d77e867

Aliases

arxiv: 2103.12352 · arxiv_version: 2103.12352v2 · doi: 10.48550/arxiv.2103.12352 · pith_short_12: 4NK5R46PMMKY · pith_short_16: 4NK5R46PMMKY32N7 · pith_short_8: 4NK5R46P

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/4NK5R46PMMKY32N7545CW3Z4WL \
  | 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: e355d8f3cf63158de9bfef3a2b6f3cb2c5863f0e7890c2974b6827631d77e867

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87784e8f4b3c2e4ecc7e758ee559084471dba07515e7dfb4c173c319e9db99b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-03-23T07:21:22Z",
    "title_canon_sha256": "15bc3cf894eabe1b20058e7463ad42950783b2f8b3032bc3e17130eddcea0bb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.12352",
    "kind": "arxiv",
    "version": 2
  }
}