Pith Number

pith:XREK5IXP

pith:2018:XREK5IXPZMRVTT2K2ALMC4M2JV

not attested not anchored not stored refs pending

VLBI studies of DAGN and SMBHB hosting galaxies

P. Mohan, Sandor Frey, Tao An

arxiv:1808.07651 v2 · 2018-08-23 · astro-ph.GA · 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{XREK5IXPZMRVTT2K2ALMC4M2JV}

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	2026-05-18T00:03:45.424102Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc48aea2efcb2359cf4ad016c1719a4d7a53c7fb8476f5a211ad085cc3a42232

Aliases

arxiv: 1808.07651 · arxiv_version: 1808.07651v2 · doi: 10.48550/arxiv.1808.07651 · pith_short_12: XREK5IXPZMRV · pith_short_16: XREK5IXPZMRVTT2K · pith_short_8: XREK5IXP

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/XREK5IXPZMRVTT2K2ALMC4M2JV \
  | 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: bc48aea2efcb2359cf4ad016c1719a4d7a53c7fb8476f5a211ad085cc3a42232

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b5ac8b9a531a24a7afc7011ebb215ec841f48e9e10cd89372fef47a722eb073",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-08-23T07:27:39Z",
    "title_canon_sha256": "e865f235f4821b36188d26ef8b72db8009abc1ea6b1f13c9ac0f918e48e03692"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07651",
    "kind": "arxiv",
    "version": 2
  }
}