Pith Number

pith:UNJ2GIJ2

pith:2022:UNJ2GIJ273LMPX3V4HNQ27Z6PQ

not attested not anchored not stored refs pending

InfraredTags: Embedding Invisible AR Markers and Barcodes Using Low-Cost, Infrared-Based 3D Printing and Imaging Tools

(2) Facebook Reality Labs, Aakar Gupta (2), Ahmad Taka (1), Akshat Kumar (1), Cambridge, MA, Michael Lu (1), Mustafa Doga Dogan (1), Redmond, Stefanie Mueller (1) ((1) MIT CSAIL, USA, USA), WA, Yunyi Zhu (1)

arxiv:2202.06165 v1 · 2022-02-12 · cs.HC · 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{UNJ2GIJ273LMPX3V4HNQ27Z6PQ}

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	2026-07-05T03:56:21.411211Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a353a3213afed6c7df75e1db0d7f3e7c3b49215ee7afc46b8474d7317872926b

Aliases

arxiv: 2202.06165 · arxiv_version: 2202.06165v1 · doi: 10.48550/arxiv.2202.06165 · pith_short_12: UNJ2GIJ273LM · pith_short_16: UNJ2GIJ273LMPX3V · pith_short_8: UNJ2GIJ2

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/UNJ2GIJ273LMPX3V4HNQ27Z6PQ \
  | 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: a353a3213afed6c7df75e1db0d7f3e7c3b49215ee7afc46b8474d7317872926b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc51ab5b9348ec8a82b107d38f2665520e9b3ac78729212253e3bcd80e7cb8bb",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2022-02-12T23:45:18Z",
    "title_canon_sha256": "7f3a066139a8e1972420acd01c081fd3a66ca3908ced1ad91a2dddb304d28719"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.06165",
    "kind": "arxiv",
    "version": 1
  }
}