Pith Number

pith:TWRKALIR

pith:2011:TWRKALIR3L5REIWBQFDXBO7MSX

not attested not anchored not stored refs pending

Can we measure the accretion efficiency of Active Galactic Nuclei?

(2) University of Maryland, (3) Isas, (4) Penn State University), A. C. Fabian (1), Cambridge, JAXA, Jianfeng Wu (4) ((1) Institute of Astronomy, P. Gandhi (3), R. V. Vasudevan (2), S. I. Raimundo (1)

arxiv:1109.6225 v1 · 2011-09-28 · astro-ph.CO · 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{TWRKALIR3L5REIWBQFDXBO7MSX}

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	2026-05-18T02:00:22.102001Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9da2a02d11dafb1222c1814770bbec95e116ce38f5bd44f4571c89dd85e87d4d

Aliases

arxiv: 1109.6225 · arxiv_version: 1109.6225v1 · doi: 10.48550/arxiv.1109.6225 · pith_short_12: TWRKALIR3L5R · pith_short_16: TWRKALIR3L5REIWB · pith_short_8: TWRKALIR

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/TWRKALIR3L5REIWBQFDXBO7MSX \
  | 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: 9da2a02d11dafb1222c1814770bbec95e116ce38f5bd44f4571c89dd85e87d4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bccb9782d4b9a8692bf5c2e8d662ae7bc9925e3d25dcb15f1db7de585a7ea34",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-28T14:32:59Z",
    "title_canon_sha256": "2427e56b688ea82a20f73889433b5a29790b5f3fb1d81cc1e206f0b4ee5b1f78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.6225",
    "kind": "arxiv",
    "version": 1
  }
}