is a Japanese guitarist. Other guitarists such as Luke Takamura and Sugizo have cited him as an influence. Career Watanabe learned guitar at the age of 12 from Sadanori Nakamure at the Yamaha Music
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 0xcc2e74c0e7119c554b56cf7533213002859edd818ac78291c1139141ebc15844. 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/99c48533-b5a3-4603-a399-9ed4f7b3faa7.json and https://artists.proofprofile.net/proofs/artist/99c48533-b5a3-4603-a399-9ed4f7b3faa7.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 0x40a00bdfb1676843a475218fd0558fa602048bda6b391839d4791c47163247f3. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/JPCO08293060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf073e5abfde04a0bc1cab35756da2c26024eee452a09066e8e9592a30acf97d0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPCO07903200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476a9afbd7de48684eec8a5dee655fc006cf713443d5be36ea8d13c652f5cbc3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPCO07903210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441cdeccbffd3e00a09a918ae2aef40d9d6f5960adc811ba8c0edd0c6d518084. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPCO08002870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227a35055f3f1064cca7d586ee4b4137052ae66ece2f433e7c09d716d297e265. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:41:43Z), 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/JPCO08002890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d7ef2b75ced7fe89da3794efd5bd72ef438b8a73617f22a84de7aa0f6f5a0c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPCO08002910.
無伴奏チェロ組曲第一番より<プレリュード>
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b89e720ea82e88f7d24f62270ffdfbf6e820c6f21a10d637717c60262ea22d7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:01:03Z), 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/JPWP01701449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441cdeccbffd3e00a09a918ae2aef40d9d6f5960adc811ba8c0edd0c6d518084. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/JPCO08002870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227a35055f3f1064cca7d586ee4b4137052ae66ece2f433e7c09d716d297e265. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/JPCO08002890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d7ef2b75ced7fe89da3794efd5bd72ef438b8a73617f22a84de7aa0f6f5a0c. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/JPCO08002910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde48ba96b6c705b831a85970150dae25f563b5d0b7678d65824d766c3882b655. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:26:59Z), 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/JPCO08002920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf073e5abfde04a0bc1cab35756da2c26024eee452a09066e8e9592a30acf97d0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPCO07903200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476a9afbd7de48684eec8a5dee655fc006cf713443d5be36ea8d13c652f5cbc3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPCO07903210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a00bdfb1676843a475218fd0558fa602048bda6b391839d4791c47163247f3. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:37:35Z), 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/JPCO08293060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a00bdfb1676843a475218fd0558fa602048bda6b391839d4791c47163247f3. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:31:43Z), 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/JPCO08293060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2aac1aee202af9f68f86283be90599fecd6ab842309f452cb34ebca035f100. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/JPPO09803480.
Guitar is Beautiful KW45 (International Version)
ヒア・ゼア・アンド・エヴリウェア
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc584c285fa3afceceaf1f847e474086553b835f1e43ae4cdb67ef6ee90d3eba. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPWP01670084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343fbed5cb8f3d73d25e6cee60c9bcb85d50127bd5a6bc9d35b8eb9a6705a480. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPCO07906140.