Pith Number

pith:FBILYUQ6

pith:2015:FBILYUQ62BV5CTQLVW6JYMQ6NP

not attested not anchored not stored refs pending

Optical spectroscopic observations of blazars and gamma-ray blazar candidates in the Sloan Digital Sky Survey Data Release Nine

A. Paggi (SAO-Harvard CfA), F. Massaro (Stanford-SLAC, N. Masetti (INAF-IASF Bologna), R. D'Abrusco (SAO-Harvard CfA), S. Funk (Stanford-SLAC), Yale University)

arxiv:1503.03868 v1 · 2015-03-12 · 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{FBILYUQ62BV5CTQLVW6JYMQ6NP}

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	2026-05-18T02:23:57.969869Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2850bc521ed06bd14e0badbc9c321e6bebb4dad6965db1acd848c72425b2e6c3

Aliases

arxiv: 1503.03868 · arxiv_version: 1503.03868v1 · doi: 10.48550/arxiv.1503.03868 · pith_short_12: FBILYUQ62BV5 · pith_short_16: FBILYUQ62BV5CTQL · pith_short_8: FBILYUQ6

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/FBILYUQ62BV5CTQLVW6JYMQ6NP \
  | 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: 2850bc521ed06bd14e0badbc9c321e6bebb4dad6965db1acd848c72425b2e6c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc41eb903336ef2f1aba147020dda982a1e3a8fc163e2a735b87e516029b8354",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-03-12T20:00:13Z",
    "title_canon_sha256": "7ef4e1a2cc84a76cb9d72852950f9ca69a8d0d002e2966874054825a09e5ed2f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.03868",
    "kind": "arxiv",
    "version": 1
  }
}