Yasuhiro is a masculine Japanese given name. Written forms Yasuhiro can be written using many different combinations of kanji characters. Here are some examples: 康弘, "healthy, vast" 康広, "healthy,
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a0ee06ce2d77333f837c2bd64028aebfbcc3c5fdc8e5e345671d22dc087b3d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1a5f329-fb07-4109-8c1f-514e1b29a581.json and https://artists.proofprofile.net/proofs/artist/e1a5f329-fb07-4109-8c1f-514e1b29a581.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d7a3fb03e29853f0771e27f9e0e3753bfcbb3d4069ceb3014a5e2e01fea6ad. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:52:32Z), 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/JPA651804114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfd7cfab761d71721df841dbb2b8eae08d362a6ca8369ac73ce0112d7c22f0a. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPA651904846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aca01757e58c11e6bd4ff24bb141ee23b65ac76aee874300d6407c52a305964. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:45Z), 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/JPQ892100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aca01757e58c11e6bd4ff24bb141ee23b65ac76aee874300d6407c52a305964. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:15:09Z), 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/JPQ892100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e58b2aed0b2505a26e95c3748ca2c25068f0605a98bae1d4a0dddb46372031a. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/JPQ892200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31d5af5bf785920446a75dd146c44e9813559df3d7a53c182349935618d66ae. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPQ892300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9104f48a23a2117312f33f7bf9f1b8588e255704b4cc3c02d3c8621e75adf651. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/JPY392401940.