Pith Number

pith:3HA57F3X

pith:2017:3HA57F3XEUN3BJTUEDWFO5HHKH

not attested not anchored not stored refs pending

Preconditioner-free Wiener filtering with a dense noise matrix

Kevin M. Huffenberger

arxiv:1704.00865 v1 · 2017-04-04 · astro-ph.CO · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3HA57F3XEUN3BJTUEDWFO5HHKH}

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	2026-05-18T00:22:59.528616Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9c1df9777251bb0a67420ec5774e751e6f160c4936edfb01605f24cb465d064

Aliases

arxiv: 1704.00865 · arxiv_version: 1704.00865v1 · doi: 10.48550/arxiv.1704.00865 · pith_short_12: 3HA57F3XEUN3 · pith_short_16: 3HA57F3XEUN3BJTU · pith_short_8: 3HA57F3X

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/3HA57F3XEUN3BJTUEDWFO5HHKH \
  | 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: d9c1df9777251bb0a67420ec5774e751e6f160c4936edfb01605f24cb465d064

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c0a4b7f218b64a417e7713207ea5ee6cc148352d0f66e6d2ae171fd663beb7f2",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2017-04-04T03:37:04Z",
    "title_canon_sha256": "7aaa1577d2f9515b5666c67ad75b7be5e58e41a1189fd8b85391072a8f48af78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.00865",
    "kind": "arxiv",
    "version": 1
  }
}