Pith Number

pith:VMDVYLLH

pith:2011:VMDVYLLHGVYBKWBXUFL76VBBEY

not attested not anchored not stored refs pending

Optical Emission Lines and the X-Ray Properties of Type 1 Seyfert Galaxies

D. Ili\'c, G. La Mura, L. \v{C}. Popovi\'c, P. Rafanelli, S. Ciroi, V. Cracco

arxiv:1108.5335 v2 · 2011-08-26 · astro-ph.HE

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

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	2026-05-18T00:21:15.301983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab075c2d673570155837a157ff5421262335ecbcaf7224d637be193f012bba95

Aliases

arxiv: 1108.5335 · arxiv_version: 1108.5335v2 · doi: 10.48550/arxiv.1108.5335 · pith_short_12: VMDVYLLHGVYB · pith_short_16: VMDVYLLHGVYBKWBX · pith_short_8: VMDVYLLH

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/VMDVYLLHGVYBKWBXUFL76VBBEY \
  | 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: ab075c2d673570155837a157ff5421262335ecbcaf7224d637be193f012bba95

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "131f7831eec44350481000264804ce83949ebe02e0385d079bd95bd2637dc63e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-08-26T15:50:02Z",
    "title_canon_sha256": "66e8b2b7f32b5424b038cd59a209f1c3b0c9cfab12bed8dccb3a04f4454ea626"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.5335",
    "kind": "arxiv",
    "version": 2
  }
}