Pith Number

pith:MYHLKK4Q

pith:1993:MYHLKK4QPCHKQ27US4ZMGOMWFK

not attested not anchored not stored refs pending

Multiwavelength Monitoring of the BL Lac Object PKS 2155-304 I. The IUE Campaign

C.M. Urry, et al

arxiv:astro-ph/9304003 v2 · 1993-04-02 · 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{MYHLKK4QPCHKQ27US4ZMGOMWFK}

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.

Cited by

1 paper in Pith

PKS 2155-304: Long-Term Optical Photometric Monitoring and Variability Analysis

Receipt and verification

First computed	2026-07-04T15:55:06.069935Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

660eb52b90788ea86bf49732c339962abcaba85fca69abe1eca9aa7ced7052f6

Aliases

arxiv: astro-ph/9304003 · arxiv_version: astro-ph/9304003v2 · doi: 10.48550/arxiv.astro-ph/9304003 · pith_short_12: MYHLKK4QPCHK · pith_short_16: MYHLKK4QPCHKQ27U · pith_short_8: MYHLKK4Q

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/MYHLKK4QPCHKQ27US4ZMGOMWFK \
  | 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: 660eb52b90788ea86bf49732c339962abcaba85fca69abe1eca9aa7ced7052f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f40526e59b3fdef5f23d2007b461de84fc0e98f23da47f5a1fca3896c44cb2b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1993-04-02T18:42:47Z",
    "title_canon_sha256": "94311d58145c13c8c6ec0a353a251f907c6def2d82e3e5dbd4455d43d0e55267"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9304003",
    "kind": "arxiv",
    "version": 2
  }
}