Pith Number

pith:FHPHYQ3I

pith:2018:FHPHYQ3IJRKSTEVX5GGHWJ6UUA

not attested not anchored not stored refs pending

Redundant interferometric calibration as a complex optimization problem

A.R. Parsons, G. Bernardi, J.S. Kenyon, O.M. Smirnov, T.L. Grobler

arxiv:1801.03249 v2 · 2018-01-10 · 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{FHPHYQ3IJRKSTEVX5GGHWJ6UUA}

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	2026-05-18T00:22:23.301362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29de7c43684c552992b7e98c7b27d4a03c9e530d9598832f42414e9b3acba170

Aliases

arxiv: 1801.03249 · arxiv_version: 1801.03249v2 · doi: 10.48550/arxiv.1801.03249 · pith_short_12: FHPHYQ3IJRKS · pith_short_16: FHPHYQ3IJRKSTEVX · pith_short_8: FHPHYQ3I

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/FHPHYQ3IJRKSTEVX5GGHWJ6UUA \
  | 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: 29de7c43684c552992b7e98c7b27d4a03c9e530d9598832f42414e9b3acba170

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "504e3b42fa3de266022934ff8d005afb717640611ec998bb5cfa6f9670d73964",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-01-10T06:36:46Z",
    "title_canon_sha256": "9a68b0b477f8e7fdab3b2a400af384794769495ae77bc3d61d94791f5cb36e19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.03249",
    "kind": "arxiv",
    "version": 2
  }
}