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 0xd4c7e23d542c1a8a50d529e005ba5b1506bc1714ca97bac30f2ecb7c5b50db32. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/849032c7-df56-4476-9a7f-4299dc9ab841.json and https://artists.proofprofile.net/proofs/artist/849032c7-df56-4476-9a7f-4299dc9ab841.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ainikoiyo / Nounai Shoukyo Game (International Version)
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 0x79e2ac969f7cd22e7028da3c3fa0e9bdd8e5258bef1a101f7965ca9d8dbaa2bf. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPV751800456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20266d326c3695220366fa7b3e2907d9c5458ac17e6a56cdbff353b7cc04b141. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPV751800458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759265b650011c7fdab8884a09444af5ba1be62a83fe909449fbb672e3e70be3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPV751800459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270087f311295dc0abaf1d3acbfe9b4bedd92dcf7556c89bcc16ac9aa482180d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/JPV751800463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681522926ed4cdd32378a48334d47618056ab4ad4e51d278039b47cfe588054f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPV751800464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db550f1a3e8ab25b8c68051a3756b7088a991c4e6248119edb8747a22e5b790. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/JPV751800465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc848c6c899ff61c78166c1329b486cba89c94ceecbe79adbc3091775e7ee4293. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPB602002517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d72a464c20912519b0cd59b83c5717e4ea1b438f0c22c02e4c1916738940540. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/JPB602002192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391e382b7204de81d7fdd4199e98f88b2f198902abd29c11d10bf9120edda076. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPB602000517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197768937cf17dde5a217ebd87399e59f22afea7150246f4931e75926afc8a39. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPB602000206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e86826f111c2b9f37a42e7ed9033a5107759d84ab599c0216d39f9fd2847be4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPB602001415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f452b5c561100bbb665cf14222fbc840f38b39bcf4cf10f0ef6f3fd0408b551. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/JPB602001118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca4ca3c518630249441b118cae1ce9595d436598cd4e42d9419c7ec9b0c3d40. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/JPB602001868.
Karma THE LIVE (Live at TSUTAYA O-EAST 2020.09.13)
Ambitious Girls (Live at Ikejiri Ohashi #Chord 2020.11.08)
YOUNG BLOODS (Live at YOKOHAMA BAY HALL 2020.12.13)
Ambitious Girls Rock 1 (Live at TSUTAYA O-Crest 2021.01.10)
Ambitious Girls Rock 2 (Live at LIVE HOUSE FEVER 2021.03.20)
Reload "Type A" - Ambitious Girls Rock 3 - (Live at Flowers Loft 2021.07.22-Noon)
Reload "Type B" - Ambitious Girls Rock 4 (Live at Flowers Loft 2021.07.22-Night)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446cdbbc1fae3baa8f83948a1a1cabe948c46feb960fdddc9ad0454bd9a076a0. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/JPB602203443.