Pith Number

pith:4IUO4FDO

pith:2015:4IUO4FDOMWT7HRIUNHTIYER2D4

not attested not anchored not stored refs pending

Sampling and Reconstruction of Shapes with Algebraic Boundaries

Arash Amini, Martin Vetterli, Mitra Fatemi

arxiv:1512.04388 v1 · 2015-12-14 · cs.CG

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

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	2026-05-18T01:00:40.028334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e228ee146e65a7f3c51469e68c123a1f1fd26028b735b267a8eb04d4318750a9

Aliases

arxiv: 1512.04388 · arxiv_version: 1512.04388v1 · doi: 10.48550/arxiv.1512.04388 · pith_short_12: 4IUO4FDOMWT7 · pith_short_16: 4IUO4FDOMWT7HRIU · pith_short_8: 4IUO4FDO

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/4IUO4FDOMWT7HRIUNHTIYER2D4 \
  | 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: e228ee146e65a7f3c51469e68c123a1f1fd26028b735b267a8eb04d4318750a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ea9a4a42ee9473b4eca69b1b04bea7fb940a895d541e81e449aa51047feaf80",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2015-12-14T16:20:56Z",
    "title_canon_sha256": "504622322bef5ac12bd5edd0bb4939063946cc62348098a285284a60a4c5378c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.04388",
    "kind": "arxiv",
    "version": 1
  }
}