Pith Number

pith:WWQQJT7H

pith:2025:WWQQJT7HA7AFSWPYMWY4MJQLBY

not attested not anchored not stored refs pending

Detection of the cosmological evolution of the Doppler factor for blazars jets

Dahai Yan, Haiyun Zhang, Jianeng Zhou, Lijuan Dong

arxiv:2501.15441 v1 · 2025-01-26 · 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{WWQQJT7HA7AFSWPYMWY4MJQLBY}

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	2026-07-05T10:05:29.408797Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5a104cfe707c05959f865b1c6260b0e1a0ce6e22d07ef98101e97815b509374

Aliases

arxiv: 2501.15441 · arxiv_version: 2501.15441v1 · doi: 10.48550/arxiv.2501.15441 · pith_short_12: WWQQJT7HA7AF · pith_short_16: WWQQJT7HA7AFSWPY · pith_short_8: WWQQJT7H

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/WWQQJT7HA7AFSWPYMWY4MJQLBY \
  | 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: b5a104cfe707c05959f865b1c6260b0e1a0ce6e22d07ef98101e97815b509374

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c4565881750d24270e107a8ccd1f2d2069ff5fbd164261b7a485b35f1c7c424",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2025-01-26T08:09:20Z",
    "title_canon_sha256": "48e59be804e487b356af213764832ac9715195aba712281d0811544a9bc48a6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.15441",
    "kind": "arxiv",
    "version": 1
  }
}