Pith Number

pith:BKFHXNPR

pith:2013:BKFHXNPRH2IX7D4E35IN26TIEP

not attested not anchored not stored refs pending

Black Hole Spin Properties of 130 AGN

Ruth A. Daly, Trevor B. Sprinkle

arxiv:1312.4862 v1 · 2013-12-17 · 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{BKFHXNPRH2IX7D4E35IN26TIEP}

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	2026-05-18T01:45:45.110987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a8a7bb5f13e917f8f84df50dd7a6823f54c380b181dbfac9e4a3176fb935e5b

Aliases

arxiv: 1312.4862 · arxiv_version: 1312.4862v1 · doi: 10.48550/arxiv.1312.4862 · pith_short_12: BKFHXNPRH2IX · pith_short_16: BKFHXNPRH2IX7D4E · pith_short_8: BKFHXNPR

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/BKFHXNPRH2IX7D4E35IN26TIEP \
  | 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: 0a8a7bb5f13e917f8f84df50dd7a6823f54c380b181dbfac9e4a3176fb935e5b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b160d1fd5c6a6be4bea878c0dc382c658d4f4970b1e8521795bf7ec8c08bba25",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-12-17T17:02:35Z",
    "title_canon_sha256": "eecf6b29b7a53b0bfe64b4c62cacf2adc013fd1ec2f73fde00067ed380aed7ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.4862",
    "kind": "arxiv",
    "version": 1
  }
}