Pith Number

pith:T4UPMLMG

pith:2021:T4UPMLMG42S7EORN4UAA5XPXOA

not attested not anchored not stored refs pending

Impacts of the image alignment over frequency for VLBI Global Observing System

Harald Schuh, James M. Anderson, Ming H. Xu, Nataliya Zubko, Niko Kareinen, Susanne Lunz, Tuomas Savolainen

arxiv:2109.09315 v2 · 2021-09-20 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T4UPMLMG42S7EORN4UAA5XPXOA}

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	2026-07-05T04:41:25.799562Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f28f62d86e6a5f23a2de5000eddf77030ef11eaf4adbace6df638f2ca185536

Aliases

arxiv: 2109.09315 · arxiv_version: 2109.09315v2 · doi: 10.48550/arxiv.2109.09315 · pith_short_12: T4UPMLMG42S7 · pith_short_16: T4UPMLMG42S7EORN · pith_short_8: T4UPMLMG

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/T4UPMLMG42S7EORN4UAA5XPXOA \
  | 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: 9f28f62d86e6a5f23a2de5000eddf77030ef11eaf4adbace6df638f2ca185536

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6be3af370ff00e4cc91dc071e23568e5d957babb1c010ac49db5c149cceed1d8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-09-20T06:35:12Z",
    "title_canon_sha256": "9175d573a9d5aa7aee8e2b97f3720c5b60c94b435fc5440190c465cf4968d747"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.09315",
    "kind": "arxiv",
    "version": 2
  }
}