Pith Number

pith:WQQY7IM2

pith:2023:WQQY7IM2Y5L4MMIRU6JMQZHJ55

not attested not anchored not stored refs pending

Discovery of Hydrogen Radio Recombination Lines at z=0.89 towards PKS 1830-211

Abhisek Mohapatra, Emmanuel Momjian, Francoise Combes, Gyula I. G. Jozsa, Hans-Rainer Klockner, Jonah D. Wagenveld, Kimberly L. Emig, Neeraj Gupta, Partha P. Deka, Pasquier Noterdaeme, Patrick Petitjean, Pedro Salas, Preshanth Jagannathan, Raghunathan Srianand, Sebastien Muller, Sergei A. Balashev, Yiqing Song

arxiv:2301.03115 v1 · 2023-01-08 · 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{WQQY7IM2Y5L4MMIRU6JMQZHJ55}

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	2026-07-05T05:44:11.879202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4218fa19ac757c63111a792c864e9ef4344caffc8fd66fd0649279fb4cb3542

Aliases

arxiv: 2301.03115 · arxiv_version: 2301.03115v1 · doi: 10.48550/arxiv.2301.03115 · pith_short_12: WQQY7IM2Y5L4 · pith_short_16: WQQY7IM2Y5L4MMIR · pith_short_8: WQQY7IM2

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/WQQY7IM2Y5L4MMIRU6JMQZHJ55 \
  | 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: b4218fa19ac757c63111a792c864e9ef4344caffc8fd66fd0649279fb4cb3542

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1bb4092e181d0ffb678ea1018b8928ce48dde31a84239a898276c0c20c27bf8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2023-01-08T22:11:28Z",
    "title_canon_sha256": "d7193fa5a4b1456c8e6577a5a8797ab1a23a175895911bbc3ef01e83d3bc6b59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2301.03115",
    "kind": "arxiv",
    "version": 1
  }
}