Pith Number

pith:ZVWUX7BL

pith:2013:ZVWUX7BLOJ7326FIL4HXDOXF3Q

not attested not anchored not stored refs pending

Spectroscopy of High Energy BL Lac Objects with X-shooter on the VLT

Catherine Boisson, Fran\c{c}ois Hammer, H\'el\`ene Sol, Jean-Philippe Lenain, Lex Kaper, Lucie G\'erard, Michael Punch, Paolo Goldoni, Santiago Pita

arxiv:1311.3809 v2 · 2013-11-15 · astro-ph.HE · 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{ZVWUX7BLOJ7326FIL4HXDOXF3Q}

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	2026-05-18T02:52:32.114899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd6d4bfc2b727fbd78a85f0f71bae5dc376922d2c1bbedb3c13c7182a9eaf814

Aliases

arxiv: 1311.3809 · arxiv_version: 1311.3809v2 · doi: 10.48550/arxiv.1311.3809 · pith_short_12: ZVWUX7BLOJ73 · pith_short_16: ZVWUX7BLOJ7326FI · pith_short_8: ZVWUX7BL

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/ZVWUX7BLOJ7326FIL4HXDOXF3Q \
  | 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: cd6d4bfc2b727fbd78a85f0f71bae5dc376922d2c1bbedb3c13c7182a9eaf814

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51875a9b379a7424ceb8fff385b63ec803cfc2cf8aea4c2c139c516e2bbc3f71",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-11-15T11:14:08Z",
    "title_canon_sha256": "00fd95709b8232f2a3047d7eb6e3f43236a4b5a8062f35f1d96bff22e7912c8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.3809",
    "kind": "arxiv",
    "version": 2
  }
}