Pith Number

pith:APEPZJRD

pith:2021:APEPZJRDV4IWPTJBJAWPL3PO7D

not attested not anchored not stored refs pending

Understanding the X-ray spectral curvature of Mkn 421 using broadband AstroSat observations

Ananta C. Pradhan, Jyotishree Hota, Ranjeev Misra, Rukaiya Khatoon, Rupjyoti Gogoi, Zahir Shah

arxiv:2110.03344 v1 · 2021-10-07 · astro-ph.GA · 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{APEPZJRDV4IWPTJBJAWPL3PO7D}

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	2026-07-05T03:23:52.463358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03c8fca623af1167cd21482cf5edeef8eb8bbadfb8b5f9f2bc8235ec8cd949b8

Aliases

arxiv: 2110.03344 · arxiv_version: 2110.03344v1 · doi: 10.48550/arxiv.2110.03344 · pith_short_12: APEPZJRDV4IW · pith_short_16: APEPZJRDV4IWPTJB · pith_short_8: APEPZJRD

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/APEPZJRDV4IWPTJBJAWPL3PO7D \
  | 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: 03c8fca623af1167cd21482cf5edeef8eb8bbadfb8b5f9f2bc8235ec8cd949b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "002b0976c7dfcf91a280e731da16025705ef86ffed734e534f3bc2a51825c78f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-10-07T11:31:13Z",
    "title_canon_sha256": "09ac5e54f1293d70f3ea60563269554c09af6759009080851f577edbeb2fba53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.03344",
    "kind": "arxiv",
    "version": 1
  }
}