9nine (pronounced simply "nine") is a Japanese idol group formed of Uki Satake, Sayaka Nishiwaki, and Hirona Murata. Formed in 2005, they are managed by LesPros Entertainment and signed to SME Records
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7089fadc66e75a8b51035e26915f4574c5860389726fe5fdfd757d7be1f2a8. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef028597-93b0-4ea5-9f1e-057c633b5f97.json and https://artists.proofprofile.net/proofs/artist/ef028597-93b0-4ea5-9f1e-057c633b5f97.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sgupu sako Ts(Tskay tribute) [Radio Edit]
Bana ba skolo freestyle (Mamelodi edition)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d28decedfc1acce990fa02109ab798207ecda331a1b0e7e7dca0cef796a7714. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:00:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2333589.
Sgupu sako Ts Brotherhood 2.0(last Edition)