Pith Number

pith:FYHK6LWV

pith:2016:FYHK6LWVIVNDTEOONCNIDHBB6D

not attested not anchored not stored refs pending

Unique probe of dark matter in the core of M87 with the Event Horizon Telescope

Avery E. Broderick, Celine Boehm, Joseph Silk, Mansour Karami, Thomas Lacroix

arxiv:1611.01961 v2 · 2016-11-07 · astro-ph.GA · astro-ph.CO · astro-ph.HE · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FYHK6LWVIVNDTEOONCNIDHBB6D}

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	2026-05-18T00:24:53.133573Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e0eaf2ed5455a3991ce689a819c21f0dab4d33ab8a56509941496143733c6e2

Aliases

arxiv: 1611.01961 · arxiv_version: 1611.01961v2 · doi: 10.48550/arxiv.1611.01961 · pith_short_12: FYHK6LWVIVND · pith_short_16: FYHK6LWVIVNDTEOO · pith_short_8: FYHK6LWV

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/FYHK6LWVIVNDTEOONCNIDHBB6D \
  | 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: 2e0eaf2ed5455a3991ce689a819c21f0dab4d33ab8a56509941496143733c6e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c98505f988f31a9c60c85b7ebd035562a1d8d2944ecb54d039a81107709b59c",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.HE",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-11-07T10:01:09Z",
    "title_canon_sha256": "b26e55a53f95a5f0743caaab927ae969f48e2b72b97c5d29d83aa9675d955cbf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.01961",
    "kind": "arxiv",
    "version": 2
  }
}