Pith Number

pith:GFWRMUCP

pith:2017:GFWRMUCPMDCF7L6TC2743QQUSR

not attested not anchored not stored refs pending

How to constrain mass and spin of supermassive black holes through their disk emission

G. Calderone, G. Ghisellini, S. Campitiello, T. Sbarrato

arxiv:1702.00011 v2 · 2017-01-31 · 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{GFWRMUCPMDCF7L6TC2743QQUSR}

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	2026-05-18T00:17:09.465046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

316d16504f60c45fafd316bfcdc21494411bf6025736d7839d04a2dc6fc86c33

Aliases

arxiv: 1702.00011 · arxiv_version: 1702.00011v2 · doi: 10.48550/arxiv.1702.00011 · pith_short_12: GFWRMUCPMDCF · pith_short_16: GFWRMUCPMDCF7L6T · pith_short_8: GFWRMUCP

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/GFWRMUCPMDCF7L6TC2743QQUSR \
  | 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: 316d16504f60c45fafd316bfcdc21494411bf6025736d7839d04a2dc6fc86c33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "402afbee49b9d20a3511e305858c207bba36e8b79521c2833057809d1a5da8a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-01-31T19:00:01Z",
    "title_canon_sha256": "89a35cbe0a1867adda73a2ac5434e56039b3763f1d5c8dac8677a28de6eee0da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.00011",
    "kind": "arxiv",
    "version": 2
  }
}