Pith Number

pith:FBMB7JEK

pith:2011:FBMB7JEKJUHGXD3DZUWH44J7LQ

not attested not anchored not stored refs pending

The size of the jet launching region in M87

Eric Agol, Jason Dexter, Jonathan C. McKinney

arxiv:1109.6011 v2 · 2011-09-27 · 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{FBMB7JEKJUHGXD3DZUWH44J7LQ}

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	2026-05-18T02:00:22.501336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28581fa48a4d0e6b8f63cd2c7e713f5c04fa5c9cdd1b9a89600de64d04a1b667

Aliases

arxiv: 1109.6011 · arxiv_version: 1109.6011v2 · doi: 10.48550/arxiv.1109.6011 · pith_short_12: FBMB7JEKJUHG · pith_short_16: FBMB7JEKJUHGXD3D · pith_short_8: FBMB7JEK

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/FBMB7JEKJUHGXD3DZUWH44J7LQ \
  | 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: 28581fa48a4d0e6b8f63cd2c7e713f5c04fa5c9cdd1b9a89600de64d04a1b667

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "613b2598dc05ac62347966ffc5088bc813c3973906e86ccb5ace4dae03cf6299",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-09-27T20:00:03Z",
    "title_canon_sha256": "f16b62808b63a01252db322b7ea88e12b150c0948cb86dc4dd35348a1d8e4eda"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.6011",
    "kind": "arxiv",
    "version": 2
  }
}