Pith Number

pith:FVEIWJTX

pith:2016:FVEIWJTXLS54VVDRTV6V4JCDWO

not attested not anchored not stored refs pending

Discovery of a Perseus-like cloud in the early Universe: HI-to-H2 transition, carbon monoxide and small dust grains at zabs=2.53 towards the quasar J0000+0048

C. Ledoux, H. Rahmani, I. P\^aris, J. Ge, J.-K. Krogager, M. T. Murphy, N. Gupta, P. Noterdaeme, P. Petitjean, R. Srianand, S. Balashev, T. Kr\"uhler, W. Ubachs

arxiv:1609.01422 v1 · 2016-09-06 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FVEIWJTXLS54VVDRTV6V4JCDWO}

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	2026-05-18T00:53:07.571381Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d488b26775cbbcad4719d7d5e2443b3ba248a9fa57b0aa98c3f02694e3bc598

Aliases

arxiv: 1609.01422 · arxiv_version: 1609.01422v1 · doi: 10.48550/arxiv.1609.01422 · pith_short_12: FVEIWJTXLS54 · pith_short_16: FVEIWJTXLS54VVDR · pith_short_8: FVEIWJTX

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/FVEIWJTXLS54VVDRTV6V4JCDWO \
  | 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: 2d488b26775cbbcad4719d7d5e2443b3ba248a9fa57b0aa98c3f02694e3bc598

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "804ff2c7050475925239d3fae8754055fcfa6c0fb9710c4a6cd8bc0051f984fc",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-09-06T08:05:17Z",
    "title_canon_sha256": "6470bb7959d750ec0a1f3c43987c2bea09fd3c35cf22b41bb92489eeb226d24b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.01422",
    "kind": "arxiv",
    "version": 1
  }
}