Pith Number

pith:OKVTJRNX

pith:2018:OKVTJRNXKXD742JQ2CJPDIZR5O

not attested not anchored not stored refs pending

High redshift BL Lac objects: spectroscopy of candidates

A. Treves, M. Landoni, R. Falomo, R. Scarpa, S. Paiano

arxiv:1805.03888 v1 · 2018-05-10 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OKVTJRNXKXD742JQ2CJPDIZR5O}

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	2026-05-18T00:09:59.326070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72ab34c5b755c7fe6930d092f1a331eba764ec7c539725d13b7ba9f03f1b8215

Aliases

arxiv: 1805.03888 · arxiv_version: 1805.03888v1 · doi: 10.48550/arxiv.1805.03888 · pith_short_12: OKVTJRNXKXD7 · pith_short_16: OKVTJRNXKXD742JQ · pith_short_8: OKVTJRNX

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/OKVTJRNXKXD742JQ2CJPDIZR5O \
  | 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: 72ab34c5b755c7fe6930d092f1a331eba764ec7c539725d13b7ba9f03f1b8215

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df29111b00330943a7039e02b848472258eb0be4da9d9d3d6fb16a28f6a94a94",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-05-10T08:42:37Z",
    "title_canon_sha256": "98234ad3389c25d7ab73e252fa9935598279adde995f179f279fb62032abb882"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.03888",
    "kind": "arxiv",
    "version": 1
  }
}