Pith Number

pith:DQTVVDDP

pith:2015:DQTVVDDPP5IMRGHTQQOYJMZ4NY

not attested not anchored not stored refs pending

Geodesic and Contour Optimization Using Conformal Mapping

Aijun An, Ricky Fok, Xiaogong Wang

arxiv:1504.03355 v1 · 2015-04-13 · stat.CO

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	2026-05-18T02:18:58.039714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c275a8c6f7f50c898f3841d84b33c6e2558879807e6ab9eecf075efacf53c51

Aliases

arxiv: 1504.03355 · arxiv_version: 1504.03355v1 · doi: 10.48550/arxiv.1504.03355 · pith_short_12: DQTVVDDPP5IM · pith_short_16: DQTVVDDPP5IMRGHT · pith_short_8: DQTVVDDP

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/DQTVVDDPP5IMRGHTQQOYJMZ4NY \
  | 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: 1c275a8c6f7f50c898f3841d84b33c6e2558879807e6ab9eecf075efacf53c51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7496b0b673d7488c0f807148f386fde10789869db56a9f51067735eca0215d82",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2015-04-13T20:36:42Z",
    "title_canon_sha256": "1dd62d79fff4362f12e9b6b89dd6e05dbc079e384e2cb695cbe56339d74e79d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03355",
    "kind": "arxiv",
    "version": 1
  }
}