Pith Number

pith:WXACTNFS

pith:2020:WXACTNFSE52WW3ULTMOLMDV2IZ

not attested not anchored not stored refs pending

SE(3) based Extended Kalman Filter for Spacecraft Attitude Estimation

Lubin Chang

arxiv:2003.12978 v1 · 2020-03-29 · eess.SY · cs.RO · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WXACTNFSE52WW3ULTMOLMDV2IZ}

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	2026-07-05T00:51:11.784699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5c029b4b227756b6e8b9b1cb60eba4677b00375cfc8d8e202905ee5e8ef6811

Aliases

arxiv: 2003.12978 · arxiv_version: 2003.12978v1 · doi: 10.48550/arxiv.2003.12978 · pith_short_12: WXACTNFSE52W · pith_short_16: WXACTNFSE52WW3UL · pith_short_8: WXACTNFS

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/WXACTNFSE52WW3ULTMOLMDV2IZ \
  | 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: b5c029b4b227756b6e8b9b1cb60eba4677b00375cfc8d8e202905ee5e8ef6811

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a3b72b0f8bf4f862007b7f6fc8282ff5f393da39d88243c20799e004a3f770c",
    "cross_cats_sorted": [
      "cs.RO",
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2020-03-29T09:02:37Z",
    "title_canon_sha256": "649536a9b5a58ed3b7fa50ea00cb2b1f8cf0e6352b738ffbf98b25c3bfd7ce97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.12978",
    "kind": "arxiv",
    "version": 1
  }
}