Pith Number

pith:GTB7SMMD

pith:2015:GTB7SMMDT4NQMXCKESKE5DWJIE

not attested not anchored not stored refs pending

The environments of high redshift radio galaxies and quasars: probes of protoclusters

Alvaro A. Orsi, Carlton M. Baugh, Cedric G. Lacey, Nikos Fanidakis

arxiv:1509.01254 v2 · 2015-09-03 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GTB7SMMDT4NQMXCKESKE5DWJIE}

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	2026-05-18T01:22:20.288405Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

34c3f931839f1b065c4a24944e8ec94110bc7dca29975ff2c95c625b202f5e3f

Aliases

arxiv: 1509.01254 · arxiv_version: 1509.01254v2 · doi: 10.48550/arxiv.1509.01254 · pith_short_12: GTB7SMMDT4NQ · pith_short_16: GTB7SMMDT4NQMXCK · pith_short_8: GTB7SMMD

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/GTB7SMMDT4NQMXCKESKE5DWJIE \
  | 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: 34c3f931839f1b065c4a24944e8ec94110bc7dca29975ff2c95c625b202f5e3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fc0dcd36560e74b4fd9dbde81a2339a686203267c5a184451409ca7c6135aaa",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-03T20:04:33Z",
    "title_canon_sha256": "728c94747d04447f15024cdde1ffd17b251b1e6670fc2f0f3ec5aceaa56bae70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01254",
    "kind": "arxiv",
    "version": 2
  }
}