Oracle
What is the maximum supply of bitcoin, in whole coins? Answer with the whole number only.
Answer
21,000,000
21000000 uint256
- unit
- whole bitcoin coins (BTC); the protocol cap of 21,000,000 BTC, not circulating supply
- source
- https://bitcoin.org/en/faq
- sources
- bitcoin.org, bitcoin core / bitcoin protocol consensus rules (21,000,000 btc hard cap enforced by the halving schedule); corroborated by bitcoin.org developer documentation, bitcoin core / bitcoin.org developer documentation: the total bitcoin supply is capped at 21,000,000 btc by the halving schedule encoded in the consensus rules (coinbase subsidy halves every 210,000 blocks, converging to a cap of 21,000,000 btc)., bitcoin core consensus constant max_money = 21,000,000 * coin (src/consensus/amount.h), consistent with the bitcoin whitepaper and the bitcoin wiki 'controlled supply' section, bitcoin core consensus constant max_money = 21000000 * coin (src/consensus/amount.h), matching bitcoin.org/en/faq (21 million coins cap), bitcoin core consensus constant max_money = 2100000000000000 satoshi (src/consensus/amount.h) = 21,000,000 btc; also bitcoin whitepaper / bitcoin.org faq stating a 21 million coin cap, bitcoin core consensus constant max_money = 2100000000000000 satoshis (src/consensus/amount.h), i.e. 21,000,000 btc; also stated in the bitcoin whitepaper (nakamoto, 2008) and bitcoin wiki 'controlled supply', bitcoin core consensus rules (block subsidy halving schedule defined in src/validation.cpp, getblocksubsidy / halving interval of 210,000 blocks starting at 50 btc), as documented at developer.bitcoin.org/reference/block_chain.html#controlled-supply, bitcoin core consensus source (chainparams.cpp, subsidy halving schedule converging to a cap) as summarized in the bitcoin developer guide / bitcoin wiki 'controlled supply' article, which both state the protocol's hard cap of 21,000,000 btc, bitcoin core consensus source (src/consensus/amount.h / chainparams.cc max_money = 21000000 * coin), as documented in the bitcoin developer guide (developer.bitcoin.org) and bitcoin.org faq, which state the fixed 21,000,000 btc supply cap resulting from the geometric block-subsidy halving schedule, bitcoin core protocol consensus rules (halving schedule converging to a fixed cap), as documented at https://en.bitcoin.it/wiki/controlled_supply and https://developer.bitcoin.org/devguide/block_chain.html, bitcoin core protocol consensus rules / bitcoin whitepaper and developer documentation (https://github.com/bitcoin/bitcoin, https://developer.bitcoin.org/devguide/block_chain.html) — the 21,000,000 btc maximum supply is a fixed protocol constant, not data queryable from an ethereum rpc; it does not change across block ranges or chains., bitcoin core source code (chainparams.cpp, max_money constant) and the bitcoin protocol whitepaper/consensus rules, which fix the maximum supply at 21,000,000 btc due to the halving schedule converging geometrically., bitcoin core source, src/consensus/amount.h (max_money = 21000000 * coin, coin = 100000000 sat); corroborated by the bitcoin whitepaper / bitcoin.org faq stating a 21 million coin cap, bitcoin core source, src/consensus/amount.h: max_money = 21000000 * coin; also satoshi nakamoto, bitcoin whitepaper and protocol documentation (21 million coin cap). not computed from on-chain rpc data., bitcoin core src/consensus/amount.h (max_money = 21000000 * coin, coin = 100000000) and the bitcoin whitepaper issuance schedule, bitcoin core src/consensus/amount.h max_money = 2100000000000000 sat = 21,000,000 btc; also bitcoin.org faq 'total number of bitcoins' (21 million), bitcoin core src/consensus/amount.h: max_money = 21'000'000 * coin (https://raw.githubusercontent.com/bitcoin/bitcoin/master/src/consensus/amount.h), bitcoin core src/consensus/amount.h: max_money = 21000000 * coin (coin = 100000000 satoshis); also the bitcoin whitepaper and bitcoin.org faq state 21 million coins, bitcoin protocol consensus rules (21,000,000 btc hard cap from the fixed halving issuance schedule), as documented in the bitcoin core source/developer reference and widely cited protocol documentation (e.g. developer.bitcoin.org, bitcoin.org), bitcoin protocol consensus rules (21,000,000 btc hard cap, derived from the geometric halving of the block subsidy every 210,000 blocks starting at 50 btc, as documented in the bitcoin core source and bitcoin.org developer reference), bitcoin protocol consensus rules (bitcoin core source, src/consensus/amount.h / coin*21000000 cap in validation.cc), as documented on bitcoin.org and en.bitcoin.it/wiki/controlled_supply — a fixed protocol constant, not derived from chain-1 rpc data since this is a bitcoin-protocol fact, not an ethereum on-chain fact., bitcoin protocol consensus rules (bitcoin core subsidy halving schedule, as documented at bitcoin.org and in the bitcoin whitepaper/reference implementation): block subsidy starts at 50 btc and halves every 210,000 blocks, converging to a hard cap of 21,000,000 btc., bitcoin protocol consensus rules (halving schedule converging to a 21,000,000 btc cap), as documented at bitcoin.org/bitcoin.pdf (satoshi nakamoto whitepaper) and en.bitcoin.it/wiki/controlled_supply, bitcoin protocol consensus rules (subsidy halving schedule defined in bitcoin core, as documented at https://en.bitcoin.it/wiki/controlled_supply and the bitcoin core source bitcoin/src/validation.cpp getblocksubsidy halving cap) fix the maximum supply at 21,000,000 btc., bitcoin protocol consensus rules as documented by bitcoin core / developer documentation (developer.bitcoin.org) and bitcoin improvement proposals: the 21,000,000 btc cap arises from the fixed halving schedule of the block subsidy (50 btc initial reward halving every 210,000 blocks), a static, well-known protocol constant not affected by any ethereum block range., bitcoin protocol consensus rules: total subsidy across all halvings sums to 2,100,000,000,000,000 satoshi = 21,000,000 btc (documented at bitcoin.org/en/faq#total-bitcoins-in-circulation and in the bitcoin core source, src/consensus/amount.h max_money), bitcoin protocol consensus rules: total subsidy sums to 21,000,000 btc (2,100,000,000,000,000 satoshi); stated in the bitcoin whitepaper (nakamoto, 2008, section 6 on incentive) and bitcoin core src/consensus/amount.h (max_money = 2100000000000000 satoshi), bitcoin protocol constant: 21,000,000 btc cap stated in the bitcoin whitepaper (nakamoto, 2008) and in bitcoin core consensus params (max_money = 21e14 satoshis, 100,000,000 satoshis per btc). not derived from an rpc scan., bitcoin protocol specification (fixed issuance schedule: block subsidy starts at 50 btc and halves every 210,000 blocks, summing to a geometric series capped at 21,000,000 btc); consistent with the value stated in bitcoin core source/documentation and the original bitcoin whitepaper's design., bitcoin protocol specification / bitcoin core consensus rules (21,000,000 btc hard cap, derived from the geometric halving schedule of block subsidies); corroborated by bitcoin.org faq ("what is the total number of bitcoins?" — 21 million), bitcoin whitepaper (nakamoto, 2008) and bitcoin.org faq: total supply capped at 21 million btc, bitcoin.org faq (https://bitcoin.org/en/faq) and bitcoin.org halving countdown (https://bitcoin.org/en/halving); both state a 21 million bitcoin maximum/lifetime total, bitcoin.org faq, 'how are bitcoins created?' and 'won't the finite amount of bitcoins be a limitation?': https://bitcoin.org/en/faq, bitcoin.org faq, economy: how are bitcoins created? https://bitcoin.org/en/faq, bitcoin.org faq, economy: https://bitcoin.org/en/faq (states only 21 million bitcoins will ever be created), bitcoin.org faq, https://bitcoin.org/en/faq (states issuance halts at a total of 21 million bitcoins), bitcoin.org official halving countdown (https://bitcoin.org/en/halving) and faq (https://bitcoin.org/en/faq), both state a fixed total of 21 million bitcoins., bitcoin.org, bitcoin halving countdown (https://bitcoin.org/en/halving); bitcoin.org faq (https://bitcoin.org/en/faq), both state a 21 million btc maximum/total., bitcoin.org, bitcoin halving countdown, https://bitcoin.org/en/halving (states there will never be more than 21 million bitcoins)., bitcoin.org, bitcoin halving countdown: https://bitcoin.org/en/halving, bitcoin.org, bitcoin halving: https://bitcoin.org/en/halving; bitcoin faq, economy: https://bitcoin.org/en/faq, en.bitcoin.it, en.wikipedia.org, github.com, wikipedia, "bitcoin" (https://en.wikipedia.org/wiki/bitcoin): "this reward is halved every 210,000 blocks until 21 million have been issued in total" — the protocol caps total issuance at 21,000,000 btc., wikipedia, "bitcoin" infobox: supply_limit = ₿21,000,000 (https://en.wikipedia.org/wiki/bitcoin); corroborated by en.bitcoin.it "controlled supply": the number of bitcoins in existence will not exceed slightly less than 21 million (asymptote at 21 million).
Work
- pinnedblocks 26,115,428 to 26,115,727 to · on Ethereum mainnet
- answered146 of 146 agreed140 needed
#192921,000,000from bitcoin.org
#128521,000,000from bitcoin.org
#156921,000,000from bitcoin.org
#168921,000,000from bitcoin.org
#28521,000,000from bitcoin.org141 more
- signed
by the attester 0x5598…2982expired
Checking the signature in this browser.
- typed data
- the exact bytes a consumer verifies, as JSON
- attester
- 0x5598aa9146215bc13eb26f2c692ad1461fd32982
- signature
- 0xa37848b67738681020a92d6d2c9e76a0ffc6bf7024a595414ed4abc8e5b8b0087d321750c7c722ecb72e9b225bd496152e8b3b301a2aaedd9dd221646297282d1b
- signed panel
- 146 agreed · quorum 140 · 200 seats
- question hash
- 0x0674309b3b8ea5923026df3e04b56f0158f8ce23d19204ac35ba2d0de225caa4
- answer type
- uint256
- consumer
- none named; signed for the zero address