Pith Number

pith:VL4SXGLR

pith:2017:VL4SXGLRWDJFZKTHEB2AZPVXQX

not attested not anchored not stored refs pending

Evidence for higher black hole spin in radio-loud quasars

Andreas Schulze, Chris Done, Fupeng Zhang, Yoshiyuki Inoue, Youjun Lu

arxiv:1710.01440 v2 · 2017-10-04 · 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{VL4SXGLRWDJFZKTHEB2AZPVXQX}

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	2026-05-18T00:31:39.626294Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aaf92b9971b0d25caa6720740cbeb785dfe53d5385f0f86a74b31a8d802b96a0

Aliases

arxiv: 1710.01440 · arxiv_version: 1710.01440v2 · doi: 10.48550/arxiv.1710.01440 · pith_short_12: VL4SXGLRWDJF · pith_short_16: VL4SXGLRWDJFZKTH · pith_short_8: VL4SXGLR

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/VL4SXGLRWDJFZKTHEB2AZPVXQX \
  | 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: aaf92b9971b0d25caa6720740cbeb785dfe53d5385f0f86a74b31a8d802b96a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8519f2cba51e4529b8d5c1726a150597d5fc1f26a01ef75caa36436c82d14dc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-10-04T02:25:12Z",
    "title_canon_sha256": "cef6ce15f92a1214367a46b5707cbfe60c6aa541df8c6a60395b6f96f53b86ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.01440",
    "kind": "arxiv",
    "version": 2
  }
}