Pith Number

pith:TAK4EZKH

pith:2010:TAK4EZKHDTOFSFF4PCOCMYBQA4

not attested not anchored not stored refs pending

Precision Calibration of Radio Interferometers Using Redundant Baselines

Adrian Liu, Andrew Lutomirski, Matias Zaldarriaga, Max Tegmark, Scott Morrison

arxiv:1001.5268 v3 · 2010-01-29 · 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{TAK4EZKHDTOFSFF4PCOCMYBQA4}

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	2026-05-18T04:38:58.198499Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9815c265471cdc5914bc789c266030071f2571acac6c0b6b6a993a33ff4eafab

Aliases

arxiv: 1001.5268 · arxiv_version: 1001.5268v3 · doi: 10.48550/arxiv.1001.5268 · pith_short_12: TAK4EZKHDTOF · pith_short_16: TAK4EZKHDTOFSFF4 · pith_short_8: TAK4EZKH

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/TAK4EZKHDTOFSFF4PCOCMYBQA4 \
  | 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: 9815c265471cdc5914bc789c266030071f2571acac6c0b6b6a993a33ff4eafab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8b9fc86d613ad43a40c23a204aed731560379a44b54b43497d6d53b98757f6d",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2010-01-29T20:52:47Z",
    "title_canon_sha256": "4ba919a22ebc6748f5b3474e4e5a7c25dee7712da69628eac5c17bc7d36b7830"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.5268",
    "kind": "arxiv",
    "version": 3
  }
}