Pith Number

pith:WLRHJB76

pith:2015:WLRHJB76T5XWLLSHKOTOK3O4BL

not attested not anchored not stored refs pending

Deconstructing the narrow-line region of the nearest obscured quasar

C. Ramos Almeida, C. Tadhunter, E. Bellocchi, J. Stern, M. Villar Martin, R. Gonzalez Delgado

arxiv:1509.01056 v1 · 2015-09-03 · 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	2026-05-18T01:31:30.924729Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2e27487fe9f6f65ae4753a6e56ddc0ad9133f5d4dbf68847b8d97ffc20e8664

Aliases

arxiv: 1509.01056 · arxiv_version: 1509.01056v1 · doi: 10.48550/arxiv.1509.01056 · pith_short_12: WLRHJB76T5XW · pith_short_16: WLRHJB76T5XWLLSH · pith_short_8: WLRHJB76

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/WLRHJB76T5XWLLSHKOTOK3O4BL \
  | 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: b2e27487fe9f6f65ae4753a6e56ddc0ad9133f5d4dbf68847b8d97ffc20e8664

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88b4acc32ac4b8042912735f9be6f643c7db41acdfb989beb235c8a36eab2163",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-03T12:25:27Z",
    "title_canon_sha256": "9b5fc2b66ac9eff6ce681b7dbd90cfe9d6ac0aa86f95b72d8b6e8636760eefcc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01056",
    "kind": "arxiv",
    "version": 1
  }
}