Pith Number

pith:HX7BIKCF

pith:2015:HX7BIKCFOKU5K4Q2DA7Q7JPGDD

not attested not anchored not stored refs pending

Bright vigorous winds as signposts of supermassive black hole birth

(2) Leiden Observatory), Davide Fiacconi (1), Elena M. Rossi (2) ((1) ICS, Zurich

arxiv:1509.07511 v1 · 2015-09-24 · astro-ph.HE · 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{HX7BIKCFOKU5K4Q2DA7Q7JPGDD}

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	2026-05-18T01:27:22.492673Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3dfe14284572a9d5721a183f0fa5e618fd228b66467e139e10c84bf4a9e036cb

Aliases

arxiv: 1509.07511 · arxiv_version: 1509.07511v1 · doi: 10.48550/arxiv.1509.07511 · pith_short_12: HX7BIKCFOKU5 · pith_short_16: HX7BIKCFOKU5K4Q2 · pith_short_8: HX7BIKCF

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/HX7BIKCFOKU5K4Q2DA7Q7JPGDD \
  | 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: 3dfe14284572a9d5721a183f0fa5e618fd228b66467e139e10c84bf4a9e036cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1700faf60c176c659029108729450cdb9fccae1873f1142907842daaddb4b3e",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-09-24T20:08:02Z",
    "title_canon_sha256": "5b14d81f5741054546cf62fcbdabe1bf43ce4f59c8b6ecd4ee1df05baead5584"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.07511",
    "kind": "arxiv",
    "version": 1
  }
}