Pith Number

pith:OTSWF4WY

pith:2016:OTSWF4WYM4TY26WBAIPDVHJRAP

not attested not anchored not stored refs pending

Efficient big data assimilation through sparse representation: A 3D benchmark case study in seismic history matching

Geir N{\ae}vdal, Morten Jakobsen, Tuhin Bhakta, Xiaodong Luo

arxiv:1609.06842 v1 · 2016-09-22 · physics.data-an · math.NA · math.OC · physics.geo-ph · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OTSWF4WYM4TY26WBAIPDVHJRAP}

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	2026-05-18T00:21:35.551579Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74e562f2d867278d7ac1021e3a9d3103dcb5e2bb847cd4d137975eb54378e404

Aliases

arxiv: 1609.06842 · arxiv_version: 1609.06842v1 · doi: 10.48550/arxiv.1609.06842 · pith_short_12: OTSWF4WYM4TY · pith_short_16: OTSWF4WYM4TY26WB · pith_short_8: OTSWF4WY

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/OTSWF4WYM4TY26WBAIPDVHJRAP \
  | 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: 74e562f2d867278d7ac1021e3a9d3103dcb5e2bb847cd4d137975eb54378e404

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8e75ce1503629f8f35ee984bea057780440d0754fe4fef9f6f6a789df452fea",
    "cross_cats_sorted": [
      "math.NA",
      "math.OC",
      "physics.geo-ph",
      "stat.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.data-an",
    "submitted_at": "2016-09-22T07:19:01Z",
    "title_canon_sha256": "d3e84c7fe6144d18b572d45722b2d9b6926da53f5d9a4ada1122bc7499f76620"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.06842",
    "kind": "arxiv",
    "version": 1
  }
}