Pith Number

pith:DA6SSN5J

pith:2009:DA6SSN5JI2CEYCFYFBKVQFFHKE

not attested not anchored not stored refs pending

Constraining the Spin of the Black Hole in Fairall 9 with Suzaku

2), (2) Chandra Fellow, (3) University of Maryland, (4) University of Cambridge, (5) ORAU/NASA-GSFC, (6) MPE, 7, (7) Laboratoire APC Paris, 8), (8) LAEFF, (9) Saint Mary's University), A. C. Fabian (4), C. S. Reynolds (3), E. Cackett (1, G. Miniutti (6, J. M. Miller (1), L. C. Gallo (9) ((1) University of Michigan, L. W. Brenneman (5), Madrid, M. Volonteri (1), S. Schmoll (1)

arxiv:0908.0013 v1 · 2009-08-03 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DA6SSN5JI2CEYCFYFBKVQFFHKE}

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	2026-05-18T02:12:45.583767Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

183d2937a946844c08b828555814a751236dabcec31b1d1eb31964fbff407658

Aliases

arxiv: 0908.0013 · arxiv_version: 0908.0013v1 · doi: 10.48550/arxiv.0908.0013 · pith_short_12: DA6SSN5JI2CE · pith_short_16: DA6SSN5JI2CEYCFY · pith_short_8: DA6SSN5J

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/DA6SSN5JI2CEYCFYFBKVQFFHKE \
  | 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: 183d2937a946844c08b828555814a751236dabcec31b1d1eb31964fbff407658

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9350a5089e8b2da55136053c0d797d1e7036c5641efcf98bc6790bf3f4e4110b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-08-03T14:01:11Z",
    "title_canon_sha256": "fc5ba4b00d4931090c82722b0242394deb10849b0d63550f6cf8e3e3ed44a2dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.0013",
    "kind": "arxiv",
    "version": 1
  }
}