Pith Number

pith:EYSR2CWW

pith:2013:EYSR2CWWBSHBYNEFHTTYLWV5HU

not attested not anchored not stored refs pending

Towards the event horizon -- the supermassive black hole in the Galactic Center

Heino Falcke, Sera Markoff

arxiv:1311.1841 v1 · 2013-11-07 · astro-ph.HE · 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{EYSR2CWWBSHBYNEFHTTYLWV5HU}

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

1 paper in Pith

Testing the nature of dark compact objects: a status report

Receipt and verification

First computed	2026-05-18T01:46:33.048049Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26251d0ad60c8e1c34853ce785dabd3d005a6c5203b6ab13c65d086702a36314

Aliases

arxiv: 1311.1841 · arxiv_version: 1311.1841v1 · doi: 10.48550/arxiv.1311.1841 · pith_short_12: EYSR2CWWBSHB · pith_short_16: EYSR2CWWBSHBYNEF · pith_short_8: EYSR2CWW

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/EYSR2CWWBSHBYNEFHTTYLWV5HU \
  | 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: 26251d0ad60c8e1c34853ce785dabd3d005a6c5203b6ab13c65d086702a36314

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74619b1f16f2f086ef19ecb7577831cffff31099d9ebdd478684577a54307202",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-11-07T22:52:03Z",
    "title_canon_sha256": "df3a205862ad8232f82e4af7956ffdeaefb47f10a2025b97eba316e218987e0e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1841",
    "kind": "arxiv",
    "version": 1
  }
}