Pith Number

pith:Z5H7DKFS

pith:2007:Z5H7DKFSMRC2S7BQVNN35ERS2M

not attested not anchored not stored refs pending

The 26 year-long X-ray light curve and the X-ray spectrum of the BL Lac Object 1E 1207.9+3945 in its brightest state

A. Maselli, A. Tramacere, F. Massaro, M. Capalbi, M. Perri, P. Giommi, R. Nesci

arxiv:0710.2464 v1 · 2007-10-12 · 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{Z5H7DKFSMRC2S7BQVNN35ERS2M}

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	2026-07-04T17:06:14.122663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf4ff1a8b26445a97c30ab5bbe9232d32dc932c8ab98a83403db2f712b9fc600

Aliases

arxiv: 0710.2464 · arxiv_version: 0710.2464v1 · doi: 10.48550/arxiv.0710.2464 · pith_short_12: Z5H7DKFSMRC2 · pith_short_16: Z5H7DKFSMRC2S7BQ · pith_short_8: Z5H7DKFS

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/Z5H7DKFSMRC2S7BQVNN35ERS2M \
  | 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: cf4ff1a8b26445a97c30ab5bbe9232d32dc932c8ab98a83403db2f712b9fc600

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2629b57d7ada473716b109526c280f5d48b3d6db2690fb9d84ba23582f53e307",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-10-12T14:04:04Z",
    "title_canon_sha256": "3ed87d2918822fd54abcaeb6232b0d5bbaecd2c8c5ef556d174e2d62b46d8035"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0710.2464",
    "kind": "arxiv",
    "version": 1
  }
}