Pith Number

pith:BWNGQYA4

pith:2014:BWNGQYA4P2YJKSIZ5DQ3UVWLOM

not attested not anchored not stored refs pending

Event-Horizon-Telescope Evidence for Alignment of the Black Hole in the Center of the Milky Way with the Inner Stellar Disk

Abraham Loeb, Avery E. Broderick, Dimitrios Psaltis, Ramesh Narayan, Sheperd S. Doeleman, Vincent L. Fish

arxiv:1409.5447 v1 · 2014-09-18 · 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{BWNGQYA4P2YJKSIZ5DQ3UVWLOM}

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	2026-05-18T01:42:01.294124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d9a68601c7eb0954919e8e1ba56cb730d9f26b889933dc71354bb8194b011a3

Aliases

arxiv: 1409.5447 · arxiv_version: 1409.5447v1 · doi: 10.48550/arxiv.1409.5447 · pith_short_12: BWNGQYA4P2YJ · pith_short_16: BWNGQYA4P2YJKSIZ · pith_short_8: BWNGQYA4

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/BWNGQYA4P2YJKSIZ5DQ3UVWLOM \
  | 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: 0d9a68601c7eb0954919e8e1ba56cb730d9f26b889933dc71354bb8194b011a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1aeac9c149bbee75db2600cc316512544078533cd05a8437199d14662f99c9a2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-09-18T20:09:03Z",
    "title_canon_sha256": "4eab65d25f8bedb1394280a3d52b7f275f954560003dc91c9017981e72fe146c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.5447",
    "kind": "arxiv",
    "version": 1
  }
}