Pith Number

pith:XUZENMNM

pith:1998:XUZENMNMYXJBJABIIEVRCGWXMA

not attested not anchored not stored refs pending

Empirical Determinations of Key Physical Parameters Related to Classical Double Radio Sources

Erick J. Guerra (Princeton, Lin Wan, Physics), Ruth A. Daly

arxiv:astro-ph/9807250 v1 · 1998-07-23 · 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{XUZENMNMYXJBJABIIEVRCGWXMA}

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	2026-05-18T02:03:27.129628Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd3246b1acc5d2148028412b111ad7600c1b8d4871b56de2e14386c8d3506bab

Aliases

arxiv: astro-ph/9807250 · arxiv_version: astro-ph/9807250v1 · doi: 10.48550/arxiv.astro-ph/9807250 · pith_short_12: XUZENMNMYXJB · pith_short_16: XUZENMNMYXJBJABI · pith_short_8: XUZENMNM

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/XUZENMNMYXJBJABIIEVRCGWXMA \
  | 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: bd3246b1acc5d2148028412b111ad7600c1b8d4871b56de2e14386c8d3506bab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "002734ca69db6dddd475d7d663312a9f4f54c30dee6b53b910f7f9ec8a6981c6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-07-23T23:20:25Z",
    "title_canon_sha256": "921dd6d7e084c23f7d21d0b92ca97790b07955a50da66722fa9b595e37d54bef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9807250",
    "kind": "arxiv",
    "version": 1
  }
}