Pith Number

pith:YCLL3XR3

pith:2018:YCLL3XR3FRWT3RJUDVH7RF3UUV

not attested not anchored not stored refs pending

Exploring the origins of a new, apparently metal-free gas cloud at z = 4.4

(2) Department of Chemistry & Physics, (3) Institute for Computational Cosmology, Centre for Extragalactic Astronomy, Durham University), John M. O'Meara (2), Michael T. Murphy (1), Michele Fumagalli (3) ((1) Centre for Astrophysics, Neil H. M. Crighton (1), P. Fr\'ed\'eric Robert (1), Saint Michael's College, Supercomputing, Swinburne University of Technology

arxiv:1812.05098 v1 · 2018-12-12 · 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{YCLL3XR3FRWT3RJUDVH7RF3UUV}

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	2026-07-05T00:03:31.239413Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c096bdde3b2c6d3dc5341d4ff89774a5673cc37961d478f675adadac7ae1f2fd

Aliases

arxiv: 1812.05098 · arxiv_version: 1812.05098v1 · doi: 10.48550/arxiv.1812.05098 · pith_short_12: YCLL3XR3FRWT · pith_short_16: YCLL3XR3FRWT3RJU · pith_short_8: YCLL3XR3

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/YCLL3XR3FRWT3RJUDVH7RF3UUV \
  | 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: c096bdde3b2c6d3dc5341d4ff89774a5673cc37961d478f675adadac7ae1f2fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "908d87be0681c3fb3deeb25821f39c11ab16fba4cf0fee984e986cb4bf7ca0b4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-12-12T18:42:30Z",
    "title_canon_sha256": "2527b1cbd15da139a8db6eb75e5ef6ff377a4ab307636a4de73bd779d5340b60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.05098",
    "kind": "arxiv",
    "version": 1
  }
}