Pith Number

pith:EZIUQVG3

pith:2019:EZIUQVG37DGIJMHNRIZ3XPXCUK

not attested not anchored not stored refs pending

The X-ray emission of z>2.5 active galactic nuclei can be obscured by their host galaxies

A. Feltre, C. Circosta, C. Norman, C. Vignali, F. Calura, F. Vito, M. Massardi, R. Gilli, V. Mainieri

arxiv:1901.07108 v1 · 2019-01-21 · 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{EZIUQVG37DGIJMHNRIZ3XPXCUK}

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	2026-05-17T23:49:39.514396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26514854dbf8cc84b0ed8a33bbbee2a2b985d502f15e96efb81c58317c902466

Aliases

arxiv: 1901.07108 · arxiv_version: 1901.07108v1 · doi: 10.48550/arxiv.1901.07108 · pith_short_12: EZIUQVG37DGI · pith_short_16: EZIUQVG37DGIJMHN · pith_short_8: EZIUQVG3

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/EZIUQVG37DGIJMHNRIZ3XPXCUK \
  | 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: 26514854dbf8cc84b0ed8a33bbbee2a2b985d502f15e96efb81c58317c902466

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f939c0549d8d17a3e5de70aa112a825d43f25152bb45efa0f5bedf49bfffd2ad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-01-21T22:55:00Z",
    "title_canon_sha256": "6e5aa758866061da85a67897f2cf86033c87e812b0b2dbbe3287ce0eb8f9b08e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.07108",
    "kind": "arxiv",
    "version": 1
  }
}