Pith Number

pith:NB7PHKZ3

pith:2011:NB7PHKZ32H6DFZTFSA3TC6JVWG

not attested not anchored not stored refs pending

Calculating the transfer function of noise removal by principal component analysis and application to AzTEC observations

David E. Welch, Grant W. Wilson, Jason Austermann, Kimberly Scott, Min S. Yun, Thomas Patrick Downes

arxiv:1103.3072 v2 · 2011-03-16 · astro-ph.IM · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NB7PHKZ32H6DFZTFSA3TC6JVWG}

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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	2026-05-18T03:53:52.479637Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

687ef3ab3bd1fc32e6659037317935b1b960145178e3daff15736cd53ec27844

Aliases

arxiv: 1103.3072 · arxiv_version: 1103.3072v2 · doi: 10.48550/arxiv.1103.3072 · pith_short_12: NB7PHKZ32H6D · pith_short_16: NB7PHKZ32H6DFZTF · pith_short_8: NB7PHKZ3

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/NB7PHKZ32H6DFZTFSA3TC6JVWG \
  | 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: 687ef3ab3bd1fc32e6659037317935b1b960145178e3daff15736cd53ec27844

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a93cc25fe5b9fe574b029720dd7456f74713ffca0582548a8200f1d6441866c3",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-03-16T01:01:16Z",
    "title_canon_sha256": "47f2f36d207fe1a9409eb310119c503fb1ee118646eb219cfaec27ae46dc09a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.3072",
    "kind": "arxiv",
    "version": 2
  }
}