Pith Number

pith:HPX5OUTQ

pith:2018:HPX5OUTQXRF3BHRJHAU2JKKOYS

not attested not anchored not stored refs pending

Imaging a non-singular rotating black hole at the center of the Galaxy

Eric Gourgoulhon, Fr\'ed\'eric H. Vincent, Fr\'ed\'eric Lamy, Thibaut Paumard

arxiv:1802.01635 v2 · 2018-02-05 · gr-qc · 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{HPX5OUTQXRF3BHRJHAU2JKKOYS}

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	2026-05-18T00:16:07.906679Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3befd75270bc4bb09e293829a4a94ec4825af3b497907914e0a85955ae19567e

Aliases

arxiv: 1802.01635 · arxiv_version: 1802.01635v2 · doi: 10.48550/arxiv.1802.01635 · pith_short_12: HPX5OUTQXRF3 · pith_short_16: HPX5OUTQXRF3BHRJ · pith_short_8: HPX5OUTQ

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/HPX5OUTQXRF3BHRJHAU2JKKOYS \
  | 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: 3befd75270bc4bb09e293829a4a94ec4825af3b497907914e0a85955ae19567e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b277cab821ccd770ce0829a0be562ebb81b33ac7b61d95d150ce4b5b97c134d",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-02-05T20:23:43Z",
    "title_canon_sha256": "56c4ee24763a13fabb62d47be5db3d6beeb6116c00feac870088ceac0521d740"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.01635",
    "kind": "arxiv",
    "version": 2
  }
}