After hitting a one-week low today, bitcoin risks a deeper pullback if support at $8,459 is breached, the technical charts indicate.
17 million done, four million to go.
Having rallied more than 50 percent this month, bitcoin is today witnessing pullback.
TD Ameritrade used bitcoin's "memo" area to plant a digital flag on the cryptocurrency's ledger.
Arizona's revamped cryptocurrency tax bill was approved by a key committee on Monday.
Bitcoin is looking bullish today, but must leap several resistance hurdles on the way to $10,000, chart analysis suggests.
A police superintendent has been arrested in India on suspicions that he is connected to an extortion scheme against a local businessman.
Having witnessed a major breakout on Friday, bitcoin is showing signs of bull exhaustion near the key resistance zone.
Despite the pullback from $9,060, the outlook for bitcoin, the world's largest cryptocurrency, remains bullish.
Bitcoin trading platform LedgerX now sees $7.5 million traded weekly in options products, up from $1 million during its first week.