Protocols

Every token family BTI measures.

• Ordinal Sats
  The sat family: inscribed sats, bitmaps, sat names and CAT-21 sats. How ord binds files to sats, how BTI books them, and the family's live share.
• Runes
  Fungible tokens whose messages, runestones, ride an OP_RETURN output. BTI decodes them itself; ord is only its audit oracle.
• BRC-20
  Tick ledgers written as JSON inscriptions, and since 2026-08-11 also on bare OP_RETURN. A BRC-20 mint has two claimants, the sat and the tick. BRC-100 is covered here too.
• Alkanes
  Contract tokens called through protostones inside a runestone. metashrew's trace is the record; every contract that ran claims the bytes.
• Omni
  The Mastercoin-lineage ledger, TetherUS included. BTI decodes Class C messages in OP_RETURN itself; a ledger token's bytes are its operations.
• ARC-20 and Atomicals
  Atomicals' fungible ARC-20 tickers, whose units ride sats, and its NFTs (containers and dmitems). One definitional indexer, one quarantine, one named gap: realms.
• Counterparty
  XCP assets, the first blockspace tokens (2014), with Stamps and Counters as subsets: one asset, one claim, however many sources sight it.
• TAP
  TAP ticks and DMT, catalogued through tap-reader, a mirror of Trac's feed, with two hops of derived trust.
• SRC-20 and SRC-101
  SRC-20 ticks written in the Stamps carriers, and SRC-101 names, both catalogued by the stamps adapter.
• Open Assets
  An asset protocol of coloured outputs that BTI decodes itself with a coloured-UTXO walk; B/A 0.72 in the July 2026 measurement run.
• CoinSpark
  A coloured-output asset protocol whose default route moves units with no CoinSpark bytes at all: the most extreme free-ride measurement recorded.
• EPOBC
  Colours written into the nSequence field every input already has: zero carrier bytes, the limiting case of the free-ride index.
• Colu
  Colored Coins 2.0: a coloured-UTXO protocol over two carriers, OP_RETURN and bare multisig, whose identity is a pure function of chain data.
• SPOOL
  ascribe's edition registry in OP_RETURN, from 2014 to 2017: editions are tokens, pieces are labels, and fuel transactions are enablers.
• Charms
  A zero-knowledge token protocol whose spells state the resulting charms in the clear; it moved from witness to OP_RETURN, and its Bitcoin-side supply is a lower bound.
• Pipe
  A September-2023 OP_RETURN token protocol, the Runes precursor, with art in tapscript; no indexer has ever existed, so BTI's replay is the record.
• BRC-100
  An inscription-borne tick ledger with a two-step transfer; its only mirror died, so BTI was ruled its indexer on 2026-08-11.
• Mezcal
  Runes-lite JSON mezcalstones in OP_RETURN from block 898,750; BTI's decoder transcribes the author's reference indexer, quirks and all.
• OP-20
  BRC-20's JSON shape on OP_RETURN plus a required credit address; no indexer has ever existed, so BTI's replay is the record.
• Bitmap
  Bitmap districts are labels on inscribed sats: BTI's opi-bitmap adapter adds a source under Ordinal Sats, never a family of its own.

Sources #

1. block.space protocols API · block.space/api/protocols
2. Blockspace Holdings records