Carboncoin ranks #396 of 504 cryptocurrencies. On a list that also counts tokens, memecoins, wrapped coins, staked derivatives and stablecoins it appears at #5426: 5030 of the 5425 assets ahead of it are not native coins but tokens or claims. A token is issued on a host blockchain rather than running its own; a claim stands for an asset already counted.
| CoinSpectrum Grade | pending — launch under review |
|---|---|
| Rank among cryptocurrencies | #396 |
| Rank counting claims | #5426 |
| Price | $0.000804 |
| Circulating supply | 0 CARBON |
| Maximum supply | no fixed cap |
| Consensus family | Proof of Work |
| Consensus mechanism | Scrypt |
| Own hashrate | — |
| Network purpose | Payments |
| Ledger type | Single-asset ledger |
Market figures from the 28 October 2026 build. Open the live view for every exchange's price, and charts.
Grade pending. Carboncoin's launch — how much went to insiders, whether it was sold to investors — is still being researched. A grade is not given until it is, so that a coin is never rated higher for what is not yet known.
| Criterion | Score | Basis |
|---|---|---|
| Leading Consensus Mechanisms (Source) | 10 | group average |
| Consensus: leader ladder | 10 | Proof of work: 10 of 10 on the ladder of consensus families ranked by their largest chain's market cap |
| Consensus: family ladder | 10 | Proof of work: 10 of 10 on the ladder of families ranked by the combined market cap of their chains |
| Cryptocurrency Standards (Source) | 6.5 | group average, 9 of 13 measured |
| Sound Money Qualities (6 checks) | 8 | 4 of 5 points, 1 not yet measured source |
| Scarcity: a fixed cap that holds, and a supply near 21 million | – | |
| Durability: five years or more with no halt, freeze or reversal | ✓ | 12 full years since its first recorded price, no halt, freeze or reversal in five years |
| Fungibility: every unit interchangeable, none the protocol can freeze or set apart | ✓ | no authority can freeze, blacklist or set apart a coin |
| Divisibility: the smallest unit worth a cent or less | ✓ | 8 decimal places, the smallest unit worth $8.0e-12 |
| Portability: fees of a cent or less and capacity for real demand | ✗ | about 44 transactions a second (3.4 on the throughput scale; 5 is the busiest networks' median demand) |
| Verifiability: open-source nodes and checking without a trusted server | ✓ | node software open source; light clients verify from headers or proofs |
| Privacy (5 checks) | 4 | 2 of 5 passed source |
| Whitepaper privacy: keys are not tied to an identity | ✓ | Carboncoin's Bitcoin-derived node (carboncointrust/CarboncoinCore) has no identity rule: anyone generates keys and receives and sends the coin. |
| UTXO ledger: a new key for each payment, no account linking every coin | ✓ | |
| Network-level privacy: the node hides where a transaction came from (Dandelion++, Tor or I2P, on by default) | ✗ | CarboncoinCore v0.9.5 (Jan 2018, Bitcoin 0.9 base): no Dandelion; Tor is only used if the operator runs and configures it. |
| Hidden amounts (confidential transactions, RingCT, shielded pools, Mimblewimble) | ✗ | Transparent Bitcoin-style amounts; no confidential transactions. |
| Hidden sender and receiver (ring signatures or zero-knowledge proofs, one-time or stealth addresses) | ✗ | Transparent addresses and inputs; no ring signatures or stealth addresses. |
| Scalability (fees, throughput, block time, block space, features) | 5.7 | average of 4 parts source |
| Fees ($0.001 or less 10, $1 or more 0) | – | not yet measured |
| Throughput (2,478 a second, the busiest network's peak day, 10; 119, the median of the ten busiest, 5) | 3.4 | about 44 simple transactions a second |
| Block time (10 minutes 10, less either side) | 7.2 | a block every 1.7 minutes |
| Block space per 10 minutes (32 MB or more 10) | 7.1 | 1 MB limit, 6 MB per 10 minutes |
| Features (3 checks) | 5 | 1 of 2 passed, 1 not yet researched |
| Payments safe to accept within seconds | – | Not established for a live network: the Litecoin-0.8-era code has no replace-by-fee, but no running node or explorer could be found. |
| Pruned nodes: a full node can validate and drop old history | ✗ | CarboncoinCore v0.9.5 (Jan 2018, Bitcoin 0.9 base) has no pruning mode; nodes keep every block. |
| Light clients verify payments from headers or proofs, without a trusted server | ✓ | CarboncoinCore v0.9.5 (Jan 2018, Bitcoin 0.9 base) serves BIP37 Merkle proofs to SPV clients, which check the Scrypt proof of work in headers. |
| Security (miner pay and 7 checks) | — | 2 of 3 points, 6 not yet measured source |
| Miners paid a day ($1,000 0, $10 million or more 10), 2 points | – | |
| Its own hashrate: at least half its algorithm's largest, not merge-mined | – | |
| Largest pool or validator under 50% | – | |
| Largest three under 75% | – | |
| More than one maintained client | ✗ | 0 |
| Node software is open source | ✓ | A single small team (carboncointrust, MIT-licensed Carboncoin Core) maintained the client; no activity since 2018. |
| Real on-chain use: 1,000+ transactions a day | – | |
| No 51% attack or deep reorganisation in five years | ✓ | |
| Programmability (tokens, contracts, 5 checks) | 1.1 | 1 of 9 points source |
| Token issuance | 0 | No token issuance on the chain itself |
| Smart contracts: scripting for spending conditions | 1 | Carboncoin runs Bitcoin-style Script limited to spending conditions (signatures, hash locks, multisig); no contract VM or token introspection. |
| Multisig and time locks | ✗ | OP_CHECKMULTISIG is present, but CarboncoinCore v0.9.5's src/script.h has no OP_CHECKLOCKTIMEVERIFY or OP_CHECKSEQUENCEVERIFY (0xb1 is still OP_NOP2), so Script cannot enforce a time lock. |
| Atomic swaps with other chains | ✗ | Without a consensus-enforced CLTV or CSV, Carboncoin Script cannot express the time-locked refund of an HTLC; only pre-signed nLockTime refunds, which pre-SegWit malleability makes unsafe. |
| An exchange built into the protocol | ✗ | No exchange or order book in the Carboncoin consensus rules. |
| Cross-chain messaging the chain verifies itself | ✗ | Carboncoin nodes verify no other chain; no protocol-level cross-chain messaging. |
| Non-fungible tokens | ✗ | No token or NFT type in the Carboncoin consensus rules. |
| Decentralisation | 8 | section average, 5 of 8 measured |
| Censorship resistant (Source) | 10 | No authority can halt the chain or freeze funds: No freeze or admin key in the code. source |
| No central team (Source) | 0 | A central team directs it: A single small team (carboncointrust, MIT-licensed Carboncoin Core) maintained the client; no activity since 2018. source |
| Who can mint (Source) | 10 | Proof of work: 10 of 10 on the ladder of who produces blocks |
| Nodes (Source) | — | Not yet counted |
| Holder concentration (Source) | — | Not yet measured |
| Premine (allocated at launch) | 9.9 | 0.94% of today's supply allocated at launch to founders, a company, a foundation or investors. GetBlockValue pays 144,000,000 CARBON in block 1 (genesis 8 Jan 2014). Later blocks pay a random 1-300,000 CARBON (with first-week bonuses), halving every 50,112 blocks, so total issuance converges on ~15.3B, reached within a few years at 100 s blocks. 144M / ~15.3B = ~0.94%. source |
| Fundraising | — | Launch not yet researched |
| Developer share (after launch) | 10 | No developer share: every new coin goes to the miners or validators who produce blocks. Block rewards go wholly to the miner; there is no developer output in the consensus code. source |
| Supply & Demand | 0 | group average, 1 of 2 measured |
| Supply & Demand (Source) | 0 | average of 1 measure |
| Exchanges (10 or more: 10) | 0 | no exchange the site reads trades it |
| Daily volume ($10K 0, $1B or more 10) | – | no volume reported |
| Turnover (volume ÷ market cap, 5% a day: 10) | – | not measured |
| Order-book depth (bids and asks within 2% ÷ market cap, 1%: 10) | – | not measured |
| Market cap ($1M 0, $10B or more 10) | – | not measured |
| Paper trading (futures, options and margin ÷ market cap, 0%: 10, 100%: 0) | – | not measured |
| Supply (smaller is better) | — | Supply not reported |
| Record | 6.7 | group average |
| Record (origin, claims, halts) | 10 | 3 positive, 0 negative source |
| Positive record | ||
| Launched with a stated purpose, not as a joke | ✓ | |
| No claims by its founders that contradict its own design | ✓ | |
| No halt, freeze or reversal in five years | ✓ | |
| Age (years since genesis) (Source) | 10 | 12 full years since 2014-08-02, the first day with a recorded price (genesis not yet researched, so the age can only be understated). |
| Development (work, improvements, unfixed issues) | 0 | 0 positive, 5 negative source |
| Negative | ||
| Steady work, 0 of 6 | ✗ | 0 commits in 0 of the last 12 months (github.com/carboncointrust/CarboncoinCore); carboncointrust/CarboncoinCore v0.9.5, 5 Jan 2018 (last commit 18 Jan 2018); the original carboncoin/carboncoin repo was last touched in Feb 2014. |
| Unfixed vulnerability, disclosed 2024-07-03, −1 | ✗ | CVE-2024-52914: crafted orphan transactions can stall the node for hours in the uninterruptible orphan-resolution loop; still in Carboncoin v0.9.5. |
| Unfixed vulnerability, disclosed 2024-07-03, −1 | ✗ | CVE-2020-14198: misbehaving peers are auto-banned into an unbounded ban list, so many attacker addresses can exhaust CPU and memory; still in Carboncoin v0.9.5. |
| Unfixed vulnerability, disclosed 2024-07-31, −1 | ✗ | CVE-2024-52919: addr-message spam can overflow the address manager's 32-bit id counter and crash the node, with no addr rate limit; still in Carboncoin v0.9.5. |
| Unfixed vulnerability, disclosed 2024-09-18, −1 | ✗ | CVE-2019-25220: a long low-difficulty header chain can exhaust memory because the node has no headers pre-synchronisation; still in Carboncoin v0.9.5. |
Twenty criteria, weighted equally. The Cryptocurrency Standards have six sections: sound money qualities (six checks: scarcity, durability, fungibility, divisibility, portability, verifiability), privacy (five checks), scalability (four measures and three features), security (miner pay and seven checks), programmability (token issuance, smart contracts and five checks) and decentralisation (censorship resistance, no central team, who can mint, nodes, holders, premine, fundraising and developer share). Provisional: criteria marked — are not yet measured and are left out of the average. A rating of structure and market depth, not a price forecast or investment advice. How the grade is built · Highest-graded cryptocurrencies.
0 CARBON are in circulation, against no fixed cap — issuance has no defined end.
| Premine (allocated at launch) | 0.94% of today's supply |
|---|---|
| Developer share received since launch | 0% of today's supply |
| Developer share of new coins today | 0% |
GetBlockValue pays 144,000,000 CARBON in block 1 (genesis 8 Jan 2014). Later blocks pay a random 1-300,000 CARBON (with first-week bonuses), halving every 50,112 blocks, so total issuance converges on ~15.3B, reached within a few years at 100 s blocks. 144M / ~15.3B = ~0.94%.
None documented.
Not established: the purpose and any sale of the block-1 allocation are not documented in a source found.
Block rewards go wholly to the miner; there is no developer output in the consensus code.
MAX_MONEY is 16B (per-transaction bound). Several unrelated 'Carboncoin' tokens exist; this entry is the 2014 Scrypt chain (100 s blocks).
Sources: github.com · github.com · github.com · coindesk.com. Researched 2026-10-26, low confidence.
No source we can reach publishes a hashrate for Carboncoin.
No SEC/CFTC determination — unclassified.
The regulator's position, reported as stated, not CoinSpectrum's. Assets nobody has ruled on are left unclassified rather than sorted by a guess.
Carboncoin is #396 among cryptocurrencies and #5426 in the market ranking, which lists wrapped coins, staked derivatives, stablecoins and tokens alongside them. CoinSpectrum counts an asset once, and counts only cryptocurrencies: assets with their own blockchain and their own consensus. A wrapped coin, a staked derivative or a stablecoin is a claim on something already counted; a token, memecoin or otherwise, runs on another chain's blocks. All of them are listed, each in its own section, and none is added to the total. The 5030 places between Carboncoin's two ranks are held by claims and tokens, not by other networks. The methodology sets out the rule and the counting rule argues for it.
The price above is the median of the exchanges the site reads live, checked every minute and cross-checked against a market snapshot (how market data is gathered). The grade is scored on published criteria, each with its source (the method). The site is independent, nothing on it is a paid placement, and its statements are signed (about CoinSpectrum, the manifesto).