is a female idol music group created in July 2003. It is composed today of three members: Nao, Megu and Kaede. The group is from Niigata, Japan, and was created for the promotion of the local green o
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 0x72f44553bc4ebd30f15bcab91edf53c4670bbaac096b319e6edcb62af81c68da. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c2710ab-eaa3-4a09-8fa9-d115eee36033.json and https://artists.proofprofile.net/proofs/artist/5c2710ab-eaa3-4a09-8fa9-d115eee36033.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 0x70aca6ebaa7a6ab706d0291613b1933fbec84714587b7608c2e11b048253b1ec. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:05:20Z), 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/JPE871400683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd999c85d4e9a4c2075f3ca968a4ebf7c5c3d4a85b715c1f16b489bdf220eaed. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:27:02Z), 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/JPE871200403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bd0547c29f95ef491183bad9115f20d91561fdf4ac343e0886af465b8b6098. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/JPE871300507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1657a27579edaee3bd8c0cb9f308ca1a413478585427b9babd7119d5991030c. 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/JPE871501169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d272c262c152677cfade917d15ff2a4b930b9dbf2ba027dc167702d74b902f8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPE871601526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328b53e4739417a5d716ad152ec66d0c546b2affa3ae427203c69557f448877d. 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/JPE871702291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d807d3de2054ec52b3ccb235f5d52f1969bf1f2afb836a14dc7b088cb20993. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:03:48Z), 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/JPE871602051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb508b50039aca348d3c99fd8c47de4bb51b94a8a039fb92ab363ba511ada87. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPE871903414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb508b50039aca348d3c99fd8c47de4bb51b94a8a039fb92ab363ba511ada87. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:26Z), 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/JPE871903414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde53922397509d80df869b70ca096510179b91e7da5cec5417e3bf2f0103d1f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPE871903718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd181f0194fcd5990ac120b8434dc4bf2dc905bd0e2c7b4e02d1c4fe2c1755061. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:33:56Z), 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/JPZ922404866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb508b50039aca348d3c99fd8c47de4bb51b94a8a039fb92ab363ba511ada87. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPE871903414.
坂本真綾20周年記念トリビュートアルバム REQUEST
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6932381d4b1c659b3acd2f3cf4e98d915f7c50f046ce6aeb84708647ecd53f9c. 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/JPVI01509990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7b5a11a17781960c590c0443c9d15ae05fd8123fb4d272bbfb43bafce54247. 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/JPG102401559.
Do-De-Da ~Trimondo Negimina~ (feat. Negicco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eb21af32d85f1108f0046e53cfaacd4f5bdd07150334b127ca88e00a69fd52. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCJPE1618754.
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