Pith Number

pith:R7M2MS3T

pith:2020:R7M2MS3TTK3N3UHKIMDZEMK3QK

not attested not anchored not stored refs pending

Universal Polarimetric Signatures of the Black Hole Photon Ring

Alexandru Lupsasca, Andrew Strominger, Elizabeth Himwich, Michael D. Johnson

arxiv:2001.08750 v1 · 2020-01-23 · gr-qc · astro-ph.HE · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R7M2MS3TTK3N3UHKIMDZEMK3QK}

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

3 papers in Pith

Constitutive birefringence and critical curves in the rotating Garc\'ia--D\'iaz black hole

Distinct Near-Horizon Trend of Synchrotron Polarization in Kerr Spacetime

Polarization Signatures of Inspiraling Hotspots around Kerr Black Holes

Receipt and verification

First computed	2026-07-05T00:55:09.049300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fd9a64b739ab6ddd0ea430792315b828e335e8a3df08d19b1e30d9fd0a1df32

Aliases

arxiv: 2001.08750 · arxiv_version: 2001.08750v1 · doi: 10.48550/arxiv.2001.08750 · pith_short_12: R7M2MS3TTK3N · pith_short_16: R7M2MS3TTK3N3UHK · pith_short_8: R7M2MS3T

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/R7M2MS3TTK3N3UHKIMDZEMK3QK \
  | 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: 8fd9a64b739ab6ddd0ea430792315b828e335e8a3df08d19b1e30d9fd0a1df32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3212ff7421775ed81f5d76b3cb37acb4d854285bd0a4c665ca793f87cba32c7",
    "cross_cats_sorted": [
      "astro-ph.HE",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2020-01-23T19:00:00Z",
    "title_canon_sha256": "53eadc9df1d71ee46c5e7edefe1a9a4e578378513a0148cec3e27de0b9361ab5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.08750",
    "kind": "arxiv",
    "version": 1
  }
}