Pith Number

pith:IMD7HTQ6

pith:2020:IMD7HTQ6X254I7NP6Q3XAVVXHL

not attested not anchored not stored refs pending

Determination of magnetic field strength on the event horizon of supermassive black holes in active galactic nuclei

A.G. Mikhailov, M.Yu. Piotrovich, S.D. Buliga, T.M. Natsvlishvili

arxiv:2004.07075 v1 · 2020-04-14 · astro-ph.HE · 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{IMD7HTQ6X254I7NP6Q3XAVVXHL}

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	2026-07-05T01:04:22.816708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4307f3ce1ebebbc47daff4377056b73af92000d8cfc56e30b9478fb65d0b921a

Aliases

arxiv: 2004.07075 · arxiv_version: 2004.07075v1 · doi: 10.48550/arxiv.2004.07075 · pith_short_12: IMD7HTQ6X254 · pith_short_16: IMD7HTQ6X254I7NP · pith_short_8: IMD7HTQ6

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/IMD7HTQ6X254I7NP6Q3XAVVXHL \
  | 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: 4307f3ce1ebebbc47daff4377056b73af92000d8cfc56e30b9478fb65d0b921a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55aeb4e095103b5dc95cc0d80af66d7e282f85eec9cb5b06562041c9c6972944",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-04-14T12:12:09Z",
    "title_canon_sha256": "9e12d8e6f0608f6b3c718da63a9d12f475820a7481fe22377a548536d5d5cf45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.07075",
    "kind": "arxiv",
    "version": 1
  }
}