Pith Number

pith:6ZBUNFZF

pith:2017:6ZBUNFZFZLKBL6XR4AY4AQS3NL

not attested not anchored not stored refs pending

Archaeology of active galaxies across the electromagnetic spectrum

2) ((1) ASTRON, (2) Kapteyn Astronomical Institute), Raffaella Morganti (1

arxiv:1709.01667 v1 · 2017-09-06 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6ZBUNFZFZLKBL6XR4AY4AQS3NL}

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	2026-05-18T00:35:54.638792Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f643469725cad415faf1e031c0425b6ad91596146b94da93fb9f3df77a842442

Aliases

arxiv: 1709.01667 · arxiv_version: 1709.01667v1 · doi: 10.48550/arxiv.1709.01667 · pith_short_12: 6ZBUNFZFZLKB · pith_short_16: 6ZBUNFZFZLKBL6XR · pith_short_8: 6ZBUNFZF

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/6ZBUNFZFZLKBL6XR4AY4AQS3NL \
  | 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: f643469725cad415faf1e031c0425b6ad91596146b94da93fb9f3df77a842442

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7bfb13cb7c3b8f671067a47374d79f65cd246b5fa38438901da443479a6be629",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-09-06T04:29:06Z",
    "title_canon_sha256": "85e3b9d05534ac4e59cda28055daa613f4cabfaf4729c057faf81313b6a1a8b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.01667",
    "kind": "arxiv",
    "version": 1
  }
}