Pith Number

pith:E2HTB6EG

pith:2018:E2HTB6EGXYYMN5L3NEGQOLKKF4

not attested not anchored not stored refs pending

Models of Optical Emission Lines To Investigate Narrow-Line Seyfert 1 Galaxies in Spectroscopic Databases

D. Bastieri, E. Congiu, G. La Mura, J.-H. Fan, M. Berton, P. Rafanelli, S. Chen, S. Ciroi, V. Cracco

arxiv:1809.02373 v1 · 2018-09-07 · astro-ph.GA

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	2026-05-18T00:06:17.297883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

268f30f886be30c6f57b690d072d4a2f34773d302da2423f3ffa3fe23734c8b0

Aliases

arxiv: 1809.02373 · arxiv_version: 1809.02373v1 · doi: 10.48550/arxiv.1809.02373 · pith_short_12: E2HTB6EGXYYM · pith_short_16: E2HTB6EGXYYMN5L3 · pith_short_8: E2HTB6EG

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/E2HTB6EGXYYMN5L3NEGQOLKKF4 \
  | 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: 268f30f886be30c6f57b690d072d4a2f34773d302da2423f3ffa3fe23734c8b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73684e301a20dd576e3e003adb4782d644c191d9601ace38fb664dcd9f0a2583",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-09-07T09:42:56Z",
    "title_canon_sha256": "1e58fe8f8fbd825dd436219e94f9b1cdec2e70ba7e92abb21e01f8d0cb3a78ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.02373",
    "kind": "arxiv",
    "version": 1
  }
}