1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0cbfba4b931ee4d4fabf8b7780b3473fea36b6123dde9696833e3258c0a11e45. 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/d0531efc-f2fe-406e-a249-b19fe726b941.json and https://artists.proofprofile.net/proofs/artist/d0531efc-f2fe-406e-a249-b19fe726b941.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 → block OTSBitcoinBlock must exist at that height 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 0x650e64a1cfb96a62d9cd76345c74ee7020118a197c444703856530bf29ba6d69. 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/JPKI07973715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0721cb7280813a7b3e8fa850b3112c657111ffc22b631b4ae1b587a47828d1. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/JPVI08603630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04f4810d5b5f29b9189d8286d2ecc64f21d022ba58233fb80140e174ff15fc2. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPVI08704040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf38a7b387fce4f94e9cffc67ce285e50e12cabbb9dae29c76f3200fc3adb97c. 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/JPVI08704070.
ソング＆トーク ライブ～わが輩は歌手である～
ラブ・イズ・オーヴァー(ソング＆トーク ライブ～わが輩は歌手である～より)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018b7a758ecd28f5f155b5a708e7cbdfb9678d43a0e689412254fd7d259d04f2. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/JPVI08807660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ce973c3adbf9ad67afc70beae140f8f001266154c3a2804b02610b888119c9. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPVI08904960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11482feb999e90afbef6914705ab6569c36fb2ddcf13b0fdd34595319dd1c09. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPVI08907760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe387890659da8b36c10f11ce9f37a442c839cdf7bb586fef3db7bc0ad8876e5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPPS09302601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54639bf932cf5c2d4ee8f62fe2992db1d3d2be1cbb5d37389b8eb709ded4ae19. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:55:09Z), 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/JPPS09306201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e43816298911f599ae673d3b14ac414d787d9f87a6088aa7b3f367779dc3a1. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPPS09402601.
泣いたら負け - シングル･ヴァージョン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8fd8f22b65c9c1f5f3449a82e0c539fded0739fbdf5397cfe72e8af843e2c2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPPS09450730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8e16e25afb4f55a4efd401009837e6ccf80575356ee1b1683076846a95a49b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/JPVI08402830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308126bcd277d009ce55df1422526342060a80d0752bff69e647ddf2812591e9. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:24:58Z), 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/JPVI08304850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16fcf2c2fe8d4e33213c30c8caf043722dfa7b0ba5c4dba3bcc927bc7cf6347. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPVI08402860.
決定版 やしきたかじんオリジナル・カラオケ・ベスト
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9424400b2802d7c08343c29821e1279bdf190808a2f36b23409267660640674. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPPS09601450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecbde27a7702af67121cc8bd1417e7c91c78a2fb1c95cad3552e2a88e3c793c. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/JPPS09601150.
YASHIKI TAKAJIN 50Years Old Anniversary Special Concert
エッセンシャル・ベスト やしきたかじん
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bf5dd9c4fb7bd5b1528312c2125200aa3aff56d94e34150ac707154dd722bf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:21:29Z), 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/JPPS09604140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8601ad0c76bdb6e608e9a751f451e116a823772544e299189a59ae6a3fc2968f. 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/JPPS09604130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcced9d59aaba5232e52a905e82c944efd03b1f1bb944e71faf0e443f44059c7d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPVI01028300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13151a6f015d0dcb21feb3960bab7c57bf66c74c1ee2bf0f36869ee1d31f8208. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPVI08402850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f294339d3a8cfac2b0923472461e512ce8ca3894965937d06abdb0fc5dfe2a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPVI08907740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6005057280e737caa71eca7f6367ff17e9a5bce831fc67ec90b7e0807ba76dfc. 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/JPVI08603680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045d67c7c11c5fdc5e018dd2de7e783e1a99e133fc610b68486f51f73d9ac72b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPVI08904940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fba0ee59d6e66676b620d4c84d898f89053748cd1f0e7cb769d7d66282112ca. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPVI08907720.