Pith Number

pith:4HXB2VWS

pith:2021:4HXB2VWSI4YYID6LFVR5DN3VEW

not attested not anchored not stored refs pending

PKS1830-211: OH and HI at z=0.89 and the first MeerKAT UHF spectrum

A. Bosma, A. J. Baker, E. Boettcher, E. Momjian, F. Combes, G. I. G. Jozsa, H.-R. Kloeckner, H.-W. Chen, J. Jose, J-.K. Krogager, K. Knowles, K. Moodley, N. Gupta, P. Jagannathan, P. Noterdaeme, P. Petitjean, R. Dutta, R. Srianand, S. Balashev, S. Muller, S. Pandey, S. Sekhar, V. P. Kulkarni

arxiv:2101.00188 v2 · 2021-01-01 · 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{4HXB2VWSI4YYID6LFVR5DN3VEW}

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	2026-07-05T02:35:31.660647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1ee1d56d24731840fcb2d63d1b775259a74e1afc10b0c45b8e8bd5de8617686

Aliases

arxiv: 2101.00188 · arxiv_version: 2101.00188v2 · doi: 10.48550/arxiv.2101.00188 · pith_short_12: 4HXB2VWSI4YY · pith_short_16: 4HXB2VWSI4YYID6L · pith_short_8: 4HXB2VWS

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/4HXB2VWSI4YYID6LFVR5DN3VEW \
  | 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: e1ee1d56d24731840fcb2d63d1b775259a74e1afc10b0c45b8e8bd5de8617686

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a77b263a5a96a370426290917c597c8c81ce5ecfbd898ace75f437ab7766789",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-01-01T07:49:13Z",
    "title_canon_sha256": "479593277737fd7d350ed75f27f185e2ce957e34d17d1a6bd5bbb4c595e56718"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.00188",
    "kind": "arxiv",
    "version": 2
  }
}