Pith Number

pith:QE4LNMYZ

pith:2008:QE4LNMYZYPHS3JL47J5MNWMGUB

not attested not anchored not stored refs pending

A Comprehensive X-ray Spectral Analysis of the Seyfert 1.5 NGC 3227

4), 7, 8, 9), A. Markowitz (1), F. Tombesi (4, I.M. George (3, J.N. Reeves (2), P. Ar\'evalo (6), R. Smith (5), S. Vaughan (5), V. Braito (5)

arxiv:0810.1249 v1 · 2008-10-07 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QE4LNMYZYPHS3JL47J5MNWMGUB}

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	2026-05-18T04:29:26.202402Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8138b6b319c3cf2da57cfa7ac6d986a04b9452316f55cb3300aa3a4d3abf2f4b

Aliases

arxiv: 0810.1249 · arxiv_version: 0810.1249v1 · doi: 10.48550/arxiv.0810.1249 · pith_short_12: QE4LNMYZYPHS · pith_short_16: QE4LNMYZYPHS3JL4 · pith_short_8: QE4LNMYZ

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/QE4LNMYZYPHS3JL47J5MNWMGUB \
  | 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: 8138b6b319c3cf2da57cfa7ac6d986a04b9452316f55cb3300aa3a4d3abf2f4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe8eb8a9d54ac304a8842e1672b124e7595a4b92f7bff3cd915ad7b4fb4477ad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-10-07T02:58:21Z",
    "title_canon_sha256": "f9b8a0e151a595741f5c7b7005e1b9a7026bf8262aa587998fd34cd576004b27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.1249",
    "kind": "arxiv",
    "version": 1
  }
}