Pith Number

pith:J4TJMGA6

pith:2009:J4TJMGA6BN5NNIUFOVU4AZYKDP

not attested not anchored not stored refs pending

Identifying Compact Symmetric Objects from the VLBA Imaging and Polarization Survey

C.D. Fassnacht, G.B. Taylor, J.F. Helmboldt, R.W. Romani, S.E. Tremblay

arxiv:0905.2982 v1 · 2009-05-18 · 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{J4TJMGA6BN5NNIUFOVU4AZYKDP}

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	2026-05-18T04:36:40.598140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f2696181e0b7ad6a2857569c0670a1bcbf4a901692c32bf6bbaa380149f59aa

Aliases

arxiv: 0905.2982 · arxiv_version: 0905.2982v1 · doi: 10.48550/arxiv.0905.2982 · pith_short_12: J4TJMGA6BN5N · pith_short_16: J4TJMGA6BN5NNIUF · pith_short_8: J4TJMGA6

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/J4TJMGA6BN5NNIUFOVU4AZYKDP \
  | 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: 4f2696181e0b7ad6a2857569c0670a1bcbf4a901692c32bf6bbaa380149f59aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a11a0aaf79af56362764ae0f14dc215f179c610599c4ab16d3ec72384819e91",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-05-18T21:06:24Z",
    "title_canon_sha256": "0e5e56a4c51de8328b4d18ac7e0ecfdddd1f9f6c66e42e92b8f064590d4a9411"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.2982",
    "kind": "arxiv",
    "version": 1
  }
}