is a Japanese classical guitarist. He has been named a "guitar poet" by Japanese newspaper Mainichi Shinbun."'Guitar Poet' Yasuji Ohagi, anthology of the world in a hug" (in Japanese), Mainichi Shinb
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 0xd5bd956e8592fc74689f6a747c2edce252db9dce730df0af5ac54c7cc38b5ca7. 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/85215159-6f72-4ad8-af96-7b7f469c2e10.json and https://artists.proofprofile.net/proofs/artist/85215159-6f72-4ad8-af96-7b7f469c2e10.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
フェリシタシオン！ ～そして新たな日々へ～
天の三羽の鳥 ～ギターで聴く珠玉のフランス音楽～
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 0x1ca726e7b668a1b67fb0de3bd4ad44288f21d536e0bb88780b6e83555e234cf5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPVI01605060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1149f08ec413be2f6e194205f6dcb6c4a38b1dab26029ad21c65622143f5ce50. 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/JPG201922326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcff63d65433d315a3e2ac3d68049ec41107454d8a91585f838680b9fd667cd3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPG201922332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e64d5910dbf606488be4ca5545175ec9bd5fdc2115e4acfad3aab8c2b4401d. 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/JPG201922333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16db8bece1b1090a2b5b558ef988cfbc9d5fd65206506b280768e314d97e46b. 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/JPCO02436120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1426bd45cb2d1674583b938cb5d5e460f4b3ecf1e94ecc7a9e51432726a3fdf. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/JPG201922322.
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 0x903030ab26fce086b2da2373443c96308b038bbd1b71f6936ccdbe77662586de. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/JPG201922323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19682d3a83e15291b9e2f6b4e6b32b3af926dd296bff574fdf90e61f4763cf51. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPG201922324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f79eb8db1a1725ff49f5738af625c1cf95e8e6d83a2d8ff2772d18ea938925. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/JPG201922325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3146024afdf36812279a3a0237165273a5b3b5d5b0db2bff7481a350d2df72d5. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/JPG201922327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72700cd201699fd39917625b5b7517d72e07702fc4956b6d1fa56eb205deec29. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/JPG201922329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4d021095614a9b0e3c4d2f14c2d1d6f4877f7ad062c8979e8398a732bd3f42. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/JPG201922330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d38ce4aa18cb1e696cecd7b08668958df8ae8a1e3bf3de93e6b71b744b27c7. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/JPCO02436130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68c426a0048e071ed7ea8ea1333768542f86cabb0d54faa26848282369ad8f1. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/JPCO02436140.