Pith Number

pith:4WEVBPOX

pith:2012:4WEVBPOX6VR7T4HPNYKBQKXK27

not attested not anchored not stored refs pending

Seeing Unseeability to See the Unseeable

Andrei Barbu, Jeffrey Mark Siskind, Siddharth Narayanaswamy

arxiv:1204.2801 v1 · 2012-04-12 · cs.CV · cs.AI · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4WEVBPOX6VR7T4HPNYKBQKXK27}

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	2026-05-18T03:21:21.688477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e58950bdd7f563f9f0ef6e14182aead7c2b0254f3760942f9c1981e7ed896a8f

Aliases

arxiv: 1204.2801 · arxiv_version: 1204.2801v1 · doi: 10.48550/arxiv.1204.2801 · pith_short_12: 4WEVBPOX6VR7 · pith_short_16: 4WEVBPOX6VR7T4HP · pith_short_8: 4WEVBPOX

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/4WEVBPOX6VR7T4HPNYKBQKXK27 \
  | 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: e58950bdd7f563f9f0ef6e14182aead7c2b0254f3760942f9c1981e7ed896a8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "873b4bcf6e9660e85534fef3d81101e7f589494aec46d6f41c392e197fc0b1fd",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.RO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-04-12T18:18:35Z",
    "title_canon_sha256": "99bda33c25d1b70680d0314e564b90bf62bdabbb28c0fc75c9b0c1039482acd1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.2801",
    "kind": "arxiv",
    "version": 1
  }
}