Pith Number

pith:6B6T52W2

pith:2024:6B6T52W2VY4R55AKBADW2EZ6KG

not attested not anchored not stored refs pending

The Black Hole Explorer: Using the Photon Ring to Visualize Spacetime Around the Black Hole

2), (2) Center for Astrophysics | Harvard, (3) Department of Physics & Astronomy, Alexandru Lupsasca (3), Michael D. Johnson (1, Peter Galison (1), Roman Berens (3) ((1) Black Hole Initiative at Harvard University, Smithsonian, Trevor Gravely (3), Vanderbilt University)

arxiv:2406.11671 v1 · 2024-06-17 · gr-qc

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6B6T52W2VY4R55AKBADW2EZ6KG}

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.

Cited by

2 papers in Pith

Light Propagation Prescriptions for Black Hole Movies

Photon rings and shadows of black holes with non-minimal couplings between curvature and electromagnetic field

Receipt and verification

First computed	2026-07-05T09:07:29.562596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f07d3eeadaae391ef40a08076d133e5185c0ca849528678739bc55e1a7348c95

Aliases

arxiv: 2406.11671 · arxiv_version: 2406.11671v1 · doi: 10.48550/arxiv.2406.11671 · pith_short_12: 6B6T52W2VY4R · pith_short_16: 6B6T52W2VY4R55AK · pith_short_8: 6B6T52W2

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/6B6T52W2VY4R55AKBADW2EZ6KG \
  | 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: f07d3eeadaae391ef40a08076d133e5185c0ca849528678739bc55e1a7348c95

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0ff2924262eb23845c0131e913ae9d4d859612281a5eb6f03c64395329db8ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2024-06-17T15:51:54Z",
    "title_canon_sha256": "b3f971af2a754ff1f98a2e31d0d78c5ec9dcf9ff37ec1c1a706c0a2809c91eab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2406.11671",
    "kind": "arxiv",
    "version": 1
  }
}