Pith Number

pith:7AC6XZVS

pith:2021:7AC6XZVSGUJIIIK5WM2EM247YV

not attested not anchored not stored refs pending

Efficient state and parameter estimation for high-dimensional nonlinear system identification with application to MEG brain network modeling

Chong Wang, Matthew F. Singh, Michael W. Cole, ShiNung Ching

arxiv:2104.02827 v1 · 2021-04-06 · eess.SY · cs.SY · q-bio.NC · q-bio.QM · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7AC6XZVSGUJIIIK5WM2EM247YV}

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	2026-07-05T02:29:59.968806Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f805ebe6b2351284215db334466b9fc55aabf92a2c38a5033c91676083396800

Aliases

arxiv: 2104.02827 · arxiv_version: 2104.02827v1 · doi: 10.48550/arxiv.2104.02827 · pith_short_12: 7AC6XZVSGUJI · pith_short_16: 7AC6XZVSGUJIIIK5 · pith_short_8: 7AC6XZVS

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/7AC6XZVSGUJIIIK5WM2EM247YV \
  | 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: f805ebe6b2351284215db334466b9fc55aabf92a2c38a5033c91676083396800

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d42dff2467d8702ba02fa524e3f883202261cd34cc4cc3d0c34ab812144bab17",
    "cross_cats_sorted": [
      "cs.SY",
      "q-bio.NC",
      "q-bio.QM",
      "stat.ME"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2021-04-06T23:25:26Z",
    "title_canon_sha256": "f6e8d5090c019a633387f430d6dbd0b50568377caf8d40b69c1a29a6f0c0cbc0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.02827",
    "kind": "arxiv",
    "version": 1
  }
}