is a Japanese singer-songwriter.Billboard December 28, 2002CMJ New Music Monthly Oct 2000 Since his debut, Hirai has worked as a model, actor, composer, lyricist, singer, and brand ambassador. Durin
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 0x929607270ff42c83771053163ee04309b1b7d0f673da174b505757556b0706c5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/238c22b1-b31f-4d9a-8423-d26e8a1b7407.json and https://artists.proofprofile.net/proofs/artist/238c22b1-b31f-4d9a-8423-d26e8a1b7407.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xe82fa979a02d0aaff17ee618adcb96bc51490bc989c12691bdd8cf0c60d6b960. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPU901601430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9917efcbdb0e590f6eec08e1454ada60bbcef9dc084ff0d08bcd315efdb4ebf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPN101200445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9aed2cec9698875c6783a3a0acab34b2ce467982284ea61f8649076583dd80. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPU901601573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe833c00718717d38ab21a6e68e2e17f3807546a1c4256928c75772d049e00978. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPBV01321217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3e2824d92c77bc412bbef30bbe86413a551c99674976496f08de25c9062a82. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPU901601574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ec1a18430c8bed8f8556b229da709da9073903dfa20bf242e1db172643cf40. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPU901402036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c622a0d75aed2a2e7b4f9c9f23f6949bcffe248946c96d1ff2d7aebc651f3eb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPU901502148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e5ebe71f11a69a6892a688a05511b64976a7d6f0a9777e5fa0bc76424951de. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPBV01420032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f05d871da498ed6e7b9ad07dfc620bf95fe70e3528ce8533e14a02ba58ae2d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPU901601356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79f21c4eea331239c9d8835be3e84b3eb0cfded37ef5be587196a4e3ecea62d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPU901601576.
Ken Hirai Singles Best Collection UtaBakaTwo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b93fb69fb4f74be89294125288539227bf3d7990c1663f0e740030903338cd. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/JPN101100421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9917efcbdb0e590f6eec08e1454ada60bbcef9dc084ff0d08bcd315efdb4ebf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPN101200445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e5ebe71f11a69a6892a688a05511b64976a7d6f0a9777e5fa0bc76424951de. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPBV01420032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82fa979a02d0aaff17ee618adcb96bc51490bc989c12691bdd8cf0c60d6b960. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPU901601430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db3b6042472a993de69175a9bef53d688501b61eb85e94c268a0442321a879c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPU901701326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1862e7493050e9f4bd3650bb01f71f7901ae6f41c49d00a8958cd24e7241028. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPU901701823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71275ebeaf126fe9154eccf30f1b7c0b1aefc749d2049690a10cb3ea223b9a2d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPVI01814561.