Pith Number

pith:2U2TIHWV

pith:2013:2U2TIHWVNUSLA2T6C4NFZJYEV6

not attested not anchored not stored refs pending

Geometric primitive feature extraction - concepts, algorithms, and applications

Dilip K. Prasad

arxiv:1305.3885 v1 · 2013-05-16 · cs.CV · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2U2TIHWVNUSLA2T6C4NFZJYEV6}

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	2026-05-18T03:25:33.755195Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d535341ed56d24b06a7e171a5ca704afbcbf558fa00d72d9dff62b9f5eb52820

Aliases

arxiv: 1305.3885 · arxiv_version: 1305.3885v1 · doi: 10.48550/arxiv.1305.3885 · pith_short_12: 2U2TIHWVNUSL · pith_short_16: 2U2TIHWVNUSLA2T6 · pith_short_8: 2U2TIHWV

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/2U2TIHWVNUSLA2T6C4NFZJYEV6 \
  | 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: d535341ed56d24b06a7e171a5ca704afbcbf558fa00d72d9dff62b9f5eb52820

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdc856888f17739aa05841fac5442ae2428ad680440f80fe1f3b9e8c10f4201c",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2013-05-16T18:42:19Z",
    "title_canon_sha256": "3a3bb36e35aac041ea35a60fc7e60860a898aa6f3e2c283005260da146e9af58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.3885",
    "kind": "arxiv",
    "version": 1
  }
}