Pith Number

pith:VDWQ7M2Q

pith:2001:VDWQ7M2QXNPQEPC3H7ULXWE5CA

not attested not anchored not stored refs pending

COMPTEL Observations of the Blazars 3C 454.3 and CTA 102

H. Bloemen, K. Bennett, M. McConnell, O.R. Williams, S. Zhang, V. Schoenfelder, W. Collmar, W. Hermsen

arxiv:astro-ph/0107173 v1 · 2001-07-10 · 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{VDWQ7M2QXNPQEPC3H7ULXWE5CA}

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	2026-05-18T01:07:45.648812Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8ed0fb350bb5f023c5b3fe8bbd89d10240588ef13864e619f74f769f56270b1

Aliases

arxiv: astro-ph/0107173 · arxiv_version: astro-ph/0107173v1 · doi: 10.48550/arxiv.astro-ph/0107173 · pith_short_12: VDWQ7M2QXNPQ · pith_short_16: VDWQ7M2QXNPQEPC3 · pith_short_8: VDWQ7M2Q

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/VDWQ7M2QXNPQEPC3H7ULXWE5CA \
  | 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: a8ed0fb350bb5f023c5b3fe8bbd89d10240588ef13864e619f74f769f56270b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9507c0d8d5b8d6d3ff14a2e42f2eb8f2359ca87632c67f1b3b712a81c89fba9e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-07-10T08:44:37Z",
    "title_canon_sha256": "405d69a2063f51d362d7a68c07a89d4d9d5fe2d985d5d3f50635f08cd6f4939a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0107173",
    "kind": "arxiv",
    "version": 1
  }
}