Pith Number

pith:UCBTK2AT

pith:2009:UCBTK2ATZ7WMX56LD6TKE7NTWI

not attested not anchored not stored refs pending

VLBA Scientific Memorandum n. 31: Astrometric calibration of mm-VLBI using "Source/Frequency Phase Referenced" observations

Maria J. Rioja, Richard Dodson

arxiv:0910.1159 v1 · 2009-10-07 · astro-ph.IM

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UCBTK2ATZ7WMX56LD6TKE7NTWI}

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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.

Cited by

3 papers in Pith

Unique Science Opportunities for Space VLBI Systems with the SKA Telescopes

Frequency Phase Transfer for Future Millimetre Arrays with Arbitrary Frequency Ratios

Unique Science Opportunities for Space VLBI Systems with the SKA Telescopes

Receipt and verification

First computed	2026-07-04T15:53:57.328433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a083356813cfeccbf7cb1fa6a27db3b22f10adf03588704b6448edf19c50c953

Aliases

arxiv: 0910.1159 · arxiv_version: 0910.1159v1 · doi: 10.48550/arxiv.0910.1159 · pith_short_12: UCBTK2ATZ7WM · pith_short_16: UCBTK2ATZ7WMX56L · pith_short_8: UCBTK2AT

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/UCBTK2ATZ7WMX56LD6TKE7NTWI \
  | 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: a083356813cfeccbf7cb1fa6a27db3b22f10adf03588704b6448edf19c50c953

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47ec1d2f86cab8e03f4ff80f942ff53c074ec725b3a55d381edb82f1398a7fae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-10-07T05:41:15Z",
    "title_canon_sha256": "df97829c49df46f10d191edec2efb1139b0bb06a0183efce63bc12b181320910"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.1159",
    "kind": "arxiv",
    "version": 1
  }
}