Pith Number

pith:HOWVFSQD

pith:2006:HOWVFSQDNDFKC4UBOPFSBSQB4F

not attested not anchored not stored refs pending

The Host Galaxy of the Quasar HE 0450-2958

2), (2) Seoul National University, (3) Space Telescope Science Institute), Chien Y. Peng (3), Luis C. Ho (1), Minjin Kim (1, Myungshin Im (2) ((1) Carnegie Observatories

arxiv:astro-ph/0611411 v2 · 2006-11-13 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HOWVFSQDNDFKC4UBOPFSBSQB4F}

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	2026-05-18T04:37:01.354222Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bad52ca0368caa1728173cb20ca01e16fd8e58083b82edd4a50b1d2a67a8144

Aliases

arxiv: astro-ph/0611411 · arxiv_version: astro-ph/0611411v2 · doi: 10.48550/arxiv.astro-ph/0611411 · pith_short_12: HOWVFSQDNDFK · pith_short_16: HOWVFSQDNDFKC4UB · pith_short_8: HOWVFSQD

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/HOWVFSQDNDFKC4UBOPFSBSQB4F \
  | 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: 3bad52ca0368caa1728173cb20ca01e16fd8e58083b82edd4a50b1d2a67a8144

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7780acbba63137f8bf16e21e1a3fa35f8a8f671fc6eb88f0aa947a6c8f8737d0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-11-13T22:43:43Z",
    "title_canon_sha256": "fc16485f9fa09f4d97ecfff61dd7a7f90a947cb1c79952f4d82e4ac1db56df1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0611411",
    "kind": "arxiv",
    "version": 2
  }
}