Pith Number

pith:BX2Q7WTI

pith:2011:BX2Q7WTIS4QWWTRF2N74XAJVFX

not attested not anchored not stored refs pending

Matched Filtering from Limited Frequency Samples

Armin Eftekhari, Justin Romberg, Michael B. Wakin

arxiv:1101.2713 v2 · 2011-01-14 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BX2Q7WTIS4QWWTRF2N74XAJVFX}

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	2026-05-18T00:58:43.723749Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0df50fda6897216b4e25d37fcb81352dd38076d307913b530ce898c8969423d8

Aliases

arxiv: 1101.2713 · arxiv_version: 1101.2713v2 · doi: 10.48550/arxiv.1101.2713 · pith_short_12: BX2Q7WTIS4QW · pith_short_16: BX2Q7WTIS4QWWTRF · pith_short_8: BX2Q7WTI

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/BX2Q7WTIS4QWWTRF2N74XAJVFX \
  | 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: 0df50fda6897216b4e25d37fcb81352dd38076d307913b530ce898c8969423d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed0dd4ed420aa4d53bec7ece81b7d4a4b7badb51d8de483fe7ee7e288b31f6b5",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-01-14T03:43:05Z",
    "title_canon_sha256": "b052b32ee0fe9461a2eb86010b781f46b9a687dae35046fa5294a46260d0b540"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.2713",
    "kind": "arxiv",
    "version": 2
  }
}