was a Japanese musician, famous for his koto playing. He was born in Kobe. He lost his sight in 1902, when he was 8 years old, and started his study in koto under the guidance of Nakajima Kengyo II
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 0xef74b4d4e13fb0cda22c71316f0a4a66607b595cb4f2e6f3efa6946aca7bc4d4. 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/f445dc18-8475-4140-9e4d-969e4c8377e4.json and https://artists.proofprofile.net/proofs/artist/f445dc18-8475-4140-9e4d-969e4c8377e4.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 0xf1cda922b4f0d76366c7c7e5d81c61cf09c1e1c52d7f339d18354dc166dc6c45. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:40:21Z), 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/JPVI03000400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3710b0e1be1b9bea033925070a2717577124419a1ba67ac5723faefd5c8c6dc. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:01:06Z), 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/JPVI05000470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb203cbf42e05e75763c1d7598075e6651dfecae076e2ef834be64914a54399c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:39:55Z), 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/JPVI02800180.
日本音楽の巨匠 生田流箏曲 ／宮城道雄
ノイズレスSPアーカイヴズ 水の変態／宮城道雄〈Ⅱ〉
ノイズレスSPアーカイヴズ 六段／宮城道雄〈Ⅲ〉
ノイズレスSPアーカイヴズ 春の海／宮城道雄〈Ⅰ〉
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d78f0cd124be0986132c072c29f2007c0274d7a0c3f55e699b524ef72835e7. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/AUXN22099827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37995add3e1bb3eb6d6099843c78264e9438f5284dbddbe5d376ba67f731e11b. 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/HKI190190407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f359eea15d6bb928633ed2741b247fc50f07faaf92eeafbb6684a8cd02bd370. 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/CAO280400281.
London no yoru no ame “Night Rain in London”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe033aa4714cf62f979a386083a541c88788774ed31d489732dd230c576fddbe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CAO280400284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a684c075974e1149508b1f283d981211a24aae5c5df540b2d1677b7388c5f3. 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/CAO280400286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21242f7d4fade7aaf8b187c19574f3933b921e870fbf893f4a481fb646a69a4e. 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/USKO10802320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050df277820172fc7bc49f074f0bc47cc741b07cb90d7caa437a1b02bf2a73c2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES8301433903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de0ec61d9a6b6845e07d5af35a19943928317d10a17209e88d46efd06eff818. 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/NLA509608601.
James Galway - The Man with the Golden Flute
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cc72d3d64b2411854b7f7de01332b93de1357b22ccd018b554d680c34a8c26. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USBC17500223.
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 0xaea60bcb051eccbd04b65df98423b5afcd3e0d8beaf88847cd48eb747eaaa6a8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBCKG0700769.
Tokyo University of the Arts (Geidai): From Classics to Traditional Japanese Music Performed by Recommended Students!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cda336bef73cc4e69a0f916589b923e6c7e6ffbdaa9781d95fc266a8fe4afa5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/JPWP01701300.