Pith Number

pith:TSPZJA7I

pith:2021:TSPZJA7IMHPD4OLFBD3J4ZYYSE

not attested not anchored not stored refs pending

Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign

A. D. Falcone, A. Kaur, C. Goddi, D. Haggard, EAVN Collaboration, E. V. Kravchenko, G. Keating, G. Principe, H.E.S.S. collaboration, J. Anczarski, J. C. Algaba, J. Neilsen, J. Park, J.-Y. Kim, K. Asada, K. E. Williamson, K. Hada, MAGIC collaboration, M. A. Nowak, M. Balokovic, M. Giroletti, M. Kino, M. Lucchini, M. Sasada, M. T. Reynolds, R.-S. Lu, S. Chandra, S. Jorstad, S. Komossa, S. Markoff, S.-S. Lee, S. S. Savchenko, The Event Horizon Telescope Collaboration, The Fermi Large Area Telescope Collaboration, T. Kawashima, T. P. Krichbaum, VERITAS Collaboration, V. Ramakrishnan, Y.-Z. Cui

arxiv:2104.06855 v1 · 2021-04-14 · astro-ph.HE · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TSPZJA7IMHPD4OLFBD3J4ZYYSE}

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	2026-07-05T03:16:12.817959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c9f9483e861de3e396508f69e6718913a6235c8f4d71ea192a0419e89aa6ad5

Aliases

arxiv: 2104.06855 · arxiv_version: 2104.06855v1 · doi: 10.48550/arxiv.2104.06855 · pith_short_12: TSPZJA7IMHPD · pith_short_16: TSPZJA7IMHPD4OLF · pith_short_8: TSPZJA7I

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/TSPZJA7IMHPD4OLFBD3J4ZYYSE \
  | 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: 9c9f9483e861de3e396508f69e6718913a6235c8f4d71ea192a0419e89aa6ad5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "feffedef11d4765e4c1df0b5e9aa5ffcc8ff861c8011b6d51d2c4c8c6fbf3244",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-04-14T13:48:04Z",
    "title_canon_sha256": "8dbcca89d7e256e2be5ef9a29f4f4a4bd60445fdf468542c6ac74e8abeca02e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.06855",
    "kind": "arxiv",
    "version": 1
  }
}