Pith Number

pith:RP2GE6RV

pith:2021:RP2GE6RVIIHDK4W26EOLWQUNC3

not attested not anchored not stored refs pending

vrCAPTCHA: Exploring CAPTCHA Designs in Virtual Reality

Florian 'Floyd' Mueller, Rakesh Patibanda, Xiang Li, Yuzheng Chen

arxiv:2102.12313 v2 · 2021-02-24 · cs.HC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RP2GE6RVIIHDK4W26EOLWQUNC3}

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	2026-07-05T02:18:21.151422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8bf4627a35420e3572daf11cbb428d16cd97297d19fcc4413f055be3f3ab9926

Aliases

arxiv: 2102.12313 · arxiv_version: 2102.12313v2 · doi: 10.48550/arxiv.2102.12313 · pith_short_12: RP2GE6RVIIHD · pith_short_16: RP2GE6RVIIHDK4W2 · pith_short_8: RP2GE6RV

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/RP2GE6RVIIHDK4W26EOLWQUNC3 \
  | 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: 8bf4627a35420e3572daf11cbb428d16cd97297d19fcc4413f055be3f3ab9926

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "708d464f9ea15dc49cfcd64ec0f2560abb959630ee2fb12b483c850e9ad69664",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2021-02-24T14:43:11Z",
    "title_canon_sha256": "462da320dc0230d2dda9cd70e795b38677d9cae353ab44a3967745ea43918ddf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.12313",
    "kind": "arxiv",
    "version": 2
  }
}