Pith Number

pith:VVPEPPXT

pith:2021:VVPEPPXTVHNW4PTGNDZTAEBQ3R

not attested not anchored not stored refs pending

Investigating ionospheric calibration for LOFAR 2.0 with simulated observations

D. Rafferty, F. De Gasperin, H. W. Edler

arxiv:2105.04636 v1 · 2021-05-10 · 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{VVPEPPXTVHNW4PTGNDZTAEBQ3R}

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	2026-07-05T03:04:52.480470Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad5e47bef3a9db6e3e6668f3301030dc46a195db1a725683c0747fae4364a396

Aliases

arxiv: 2105.04636 · arxiv_version: 2105.04636v1 · doi: 10.48550/arxiv.2105.04636 · pith_short_12: VVPEPPXTVHNW · pith_short_16: VVPEPPXTVHNW4PTG · pith_short_8: VVPEPPXT

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/VVPEPPXTVHNW4PTGNDZTAEBQ3R \
  | 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: ad5e47bef3a9db6e3e6668f3301030dc46a195db1a725683c0747fae4364a396

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a0cf29c38510ef3e857c311b45df293635bd724702a422335988d89ec24490d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-05-10T19:46:41Z",
    "title_canon_sha256": "3ca013da7870b8bf0010fe1027178bbd1fbd1a3694820bcb54c7c6ba2cad640f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.04636",
    "kind": "arxiv",
    "version": 1
  }
}