Pith Number

pith:XLOU5EF4

pith:2013:XLOU5EF4MWXVOWDAV447JO5QUY

not attested not anchored not stored refs pending

The Response of Metal Rich Gas to X-Ray Irradiation from a Massive Black Hole at High Redshift: Proof of Concept

A. Aykutalp, J. H. Wise, M. Spaans, R. Meijerink

arxiv:1304.2000 v1 · 2013-04-07 · 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{XLOU5EF4MWXVOWDAV447JO5QUY}

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	2026-05-18T01:50:41.939905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

badd4e90bc65af575860af39f4bbb0a62e35d5a1e23c4e5ddf852a29cc81a250

Aliases

arxiv: 1304.2000 · arxiv_version: 1304.2000v1 · doi: 10.48550/arxiv.1304.2000 · pith_short_12: XLOU5EF4MWXV · pith_short_16: XLOU5EF4MWXVOWDA · pith_short_8: XLOU5EF4

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/XLOU5EF4MWXVOWDAV447JO5QUY \
  | 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: badd4e90bc65af575860af39f4bbb0a62e35d5a1e23c4e5ddf852a29cc81a250

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c7c00d56f5b6fff6dc66757b97adf59e92fc98572fd0dc2d20084bf0548759a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-04-07T13:53:06Z",
    "title_canon_sha256": "8c67d556a1ce8428f9e4f481982a837396342c57cca181cc9195e74ae068250a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.2000",
    "kind": "arxiv",
    "version": 1
  }
}