Pith Number

pith:S2AHAJG5

pith:2019:S2AHAJG5A6RMWWZWEBQ3PWQQKA

not attested not anchored not stored refs pending

LOFAR observations of 4C+19.44. On the discovery of low frequency spectral curvature in relativistic jet knots

A. Deller (Swinburne University of Technology), A. Paggi (UniTO, Astronomical Institute at St. Petersburg University), CIFS), D. E. Harris (SAO), F. Massaro (UniTO, INAF OA-To, INAF OA-To), INFN-TO, J. Mold\'on (Jodrell Bank Centre, J. R. R. Oonk (ASTRON, Kapteyn Astronomical Institute), Leiden Observatory, R. Morganti (ASTRON, S. Jorstad (Boston University, SURFsara), Univ. Manchester)

arxiv:1903.06824 v1 · 2019-03-15 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S2AHAJG5A6RMWWZWEBQ3PWQQKA}

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	2026-05-17T23:51:04.658214Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

96807024dd07a2cb5b362061b7da10503eb76d057998cd2b0842f3c0f6ef6ec5

Aliases

arxiv: 1903.06824 · arxiv_version: 1903.06824v1 · doi: 10.48550/arxiv.1903.06824 · pith_short_12: S2AHAJG5A6RM · pith_short_16: S2AHAJG5A6RMWWZW · pith_short_8: S2AHAJG5

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/S2AHAJG5A6RMWWZWEBQ3PWQQKA \
  | 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: 96807024dd07a2cb5b362061b7da10503eb76d057998cd2b0842f3c0f6ef6ec5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b7fb94445cf51939837ecbb96c78812338a817638de4d98324f3eb606103d9f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-03-15T22:21:42Z",
    "title_canon_sha256": "2cbf1275a38b5d416ca961059dc7630df849e8be9a9656b3f032d86ba4847aa1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.06824",
    "kind": "arxiv",
    "version": 1
  }
}