Pith Number

pith:MHDTJQGB

pith:2012:MHDTJQGBAATXQP2EXMIULGMFSD

not attested not anchored not stored refs pending

Thinking Outside the Band: Absorptive Filtering

Matthew A. Morgan

arxiv:1203.2174 v1 · 2012-03-09 · 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{MHDTJQGBAATXQP2EXMIULGMFSD}

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	2026-05-18T04:00:27.321498Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61c734c0c10027783f44bb1145998590e1ad973e8c4f41cd566b0181e82060aa

Aliases

arxiv: 1203.2174 · arxiv_version: 1203.2174v1 · doi: 10.48550/arxiv.1203.2174 · pith_short_12: MHDTJQGBAATX · pith_short_16: MHDTJQGBAATXQP2E · pith_short_8: MHDTJQGB

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/MHDTJQGBAATXQP2EXMIULGMFSD \
  | 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: 61c734c0c10027783f44bb1145998590e1ad973e8c4f41cd566b0181e82060aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fecbf131aff60ffd852a4884c427fd7d18d43e61e0704b81def78b094878316",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-03-09T20:42:05Z",
    "title_canon_sha256": "6a8af8a30f3e0e758d2375fb82e01e5ec8c93185735ee47ec4d7d1750d702fd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.2174",
    "kind": "arxiv",
    "version": 1
  }
}