Pith Number

pith:A5QX2CAG

pith:2016:A5QX2CAGZK2USONO24V6JOHDDJ

not attested not anchored not stored refs pending

Decoding quasars: gravitationally redshifted spectral lines !

Nimisha G. Kantharia (National Centre for Radio Astrophysics, Pune), Tata Institute of Fundamental Research

arxiv:1609.01593 v2 · 2016-09-06 · 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{A5QX2CAGZK2USONO24V6JOHDDJ}

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	2026-05-18T00:28:41.293337Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07617d0806cab54939aed72be4b8e31a57df937b8bb2be9316a5434a1bbbd9a7

Aliases

arxiv: 1609.01593 · arxiv_version: 1609.01593v2 · doi: 10.48550/arxiv.1609.01593 · pith_short_12: A5QX2CAGZK2U · pith_short_16: A5QX2CAGZK2USONO · pith_short_8: A5QX2CAG

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/A5QX2CAGZK2USONO24V6JOHDDJ \
  | 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: 07617d0806cab54939aed72be4b8e31a57df937b8bb2be9316a5434a1bbbd9a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "65cf76218cab583dba11e3ad73c181b864f9722d72f1346ef98e4d1f68bf8552",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-09-06T15:04:41Z",
    "title_canon_sha256": "5b99366f312dc07fda5f2f4e7c11d238f1cd841c9298329cf32f1f7ee960c158"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.01593",
    "kind": "arxiv",
    "version": 2
  }
}