is a Japanese rock duo consisting of guitarist, composer and producer Takahiro "Tak" Matsumoto and vocalist and lyricist Koshi Inaba,佐伯明『B'z ウルトラクロニクル』ソニー・マガジンズ、2003年。新型光「B'zはなぜこれほど売れるのか ちょっと真面目に考えてみ
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 0xd16a1fe9f3c5f304066e36200aede3367e3cb7453a4941ef4dedf366acdb2e99. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e77b5f8-a7c9-4e91-b55a-494dc1bc464d.json and https://artists.proofprofile.net/proofs/artist/8e77b5f8-a7c9-4e91-b55a-494dc1bc464d.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 0x6303a4d11571016291dfeef3c9a2f0e7787e43cb478d702b7ae63ec74048d8e8. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:41:32Z), 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/JPU902100989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f3907abfaa8bc6260ff757c2a99002aaf95b2e8a36777bfcabff6f4e7b24c6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPU902100991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cd6c6ca6dde0f0259d9321a97404877ce445da96453c2774801347ea14c804. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPBV09000130.
愛のままにわがままに 僕は君だけを傷つけない
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a24acaeda86ac347cec67b55c5dd871765966debacda504e837e26c6b114ff. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/JPBM09901117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29874f46d0ee92714639e9d9463bd1c775f4e6a3757d25317dc417a756cdc97. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPBM00301115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a60e27c375cebe47357445e6e6095f7b9428a9930935a21a65b7310b31bed1. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:17:30Z), 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/JPBM01104002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ff562a49562026efe5b03abd0f108abbe34d287ca2e7a6c02c0a5bb522d742. 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/JPBM02404001.
松本隆 作詞活動50周年トリビュート 「風街に連れてって!」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063094eb21d63e1d78908ac29a82e22b374e08a000d0f86a6affbd53fe7ace85. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPBM02104001.