Pith Number

pith:UDL2UAGC

pith:2014:UDL2UAGC534KTOYFR53VVYG7NQ

not attested not anchored not stored refs pending

The role of the reflection fraction in constraining black hole spin

A.C. Fabian, J. Garcia, J. Wilms, M.L. Parker, T. Dauser

arxiv:1408.2347 v1 · 2014-08-11 · 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{UDL2UAGC534KTOYFR53VVYG7NQ}

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	2026-05-18T01:42:21.968170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0d7aa00c2eef8a9bb058f775ae0df6c3aedadd06a31d700635d5de6c1c976ee

Aliases

arxiv: 1408.2347 · arxiv_version: 1408.2347v1 · doi: 10.48550/arxiv.1408.2347 · pith_short_12: UDL2UAGC534K · pith_short_16: UDL2UAGC534KTOYF · pith_short_8: UDL2UAGC

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/UDL2UAGC534KTOYFR53VVYG7NQ \
  | 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: a0d7aa00c2eef8a9bb058f775ae0df6c3aedadd06a31d700635d5de6c1c976ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "607ec984d2627d9f0b6c79c258646f71955769679030a3be18438f14debfe601",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-08-11T08:31:19Z",
    "title_canon_sha256": "646bc63149c43b7f9c593db121be678eb742325279a109089fc102d8a7e64b7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.2347",
    "kind": "arxiv",
    "version": 1
  }
}