Pith Number

pith:ECZCHR6R

pith:2013:ECZCHR6R6K5367JIHLS32FYCDU

not attested not anchored not stored refs pending

The effects of irradiation on the cloud evolution in active galactic nuclei

Daniel Proga, Daniel Smith, James Stone, Shane Davis, Yan-Fei Jiang

arxiv:1311.1540 v1 · 2013-11-06 · astro-ph.GA · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ECZCHR6R6K5367JIHLS32FYCDU}

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	2026-05-18T01:46:38.046608Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20b223c7d1f2bbbf7d283ae5bd17021d3cf2550ffd138e168255f9f52850d8d6

Aliases

arxiv: 1311.1540 · arxiv_version: 1311.1540v1 · doi: 10.48550/arxiv.1311.1540 · pith_short_12: ECZCHR6R6K53 · pith_short_16: ECZCHR6R6K5367JI · pith_short_8: ECZCHR6R

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/ECZCHR6R6K5367JIHLS32FYCDU \
  | 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: 20b223c7d1f2bbbf7d283ae5bd17021d3cf2550ffd138e168255f9f52850d8d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c0f3b90ad94e693bd654d2e2776f6a0082ea2fd534fccb5b25ee54f800f6e6d",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-11-06T22:20:57Z",
    "title_canon_sha256": "d3f8d2b06ad017dd38eab76c89d03e92925f575403133d2ebe600be1a5ab64db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1540",
    "kind": "arxiv",
    "version": 1
  }
}