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 0x28b4a790ece9b2c35682a417a5c8c5fdd92fa8acec46ecb427c15f6eb8118d1b. 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/c9d8bc42-e8b9-494c-9a84-d7c3e87f7a4b.json and https://artists.proofprofile.net/proofs/artist/c9d8bc42-e8b9-494c-9a84-d7c3e87f7a4b.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 0x0a69b5ff6ac4873315408af48565618de4362bd7c4738a6f5995c5c1c6f27913. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPE871501229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe801b372fd50584e3232fee73678c885d0fa137127c91777d13e6288f74c06dd. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:02:22Z), 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/JPVP01801109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23bd9359688fb8de264b039e48bac601f461c2c561a8cd7fc028ff121bc8bdc. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPVP02001803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb158fba52057256992d566cceae4b1d09b42113a7fb5cb3d574586b278e00188. 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/JPVP02001805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23bd9359688fb8de264b039e48bac601f461c2c561a8cd7fc028ff121bc8bdc. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/JPVP02001803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0622b20730e7b8d0684886ea2c05182bfaf8c5f8b2b3c8e52af098042c9ff883. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:54:01Z), 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/JPVP02001804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb158fba52057256992d566cceae4b1d09b42113a7fb5cb3d574586b278e00188. 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/JPVP02001805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285554bcbf72e6f248c0a0821f940cf96b2323afb173832f87a25ecc5fc2e425. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:52Z), 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/JPVP02008001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425395c9795ca58cf0512e6c07052387bad8d61c2721e6f2c09753094613d218. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPVP02008201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ac9e2ca90925f2c799011a39168b22db98e8c41ef7e21f8faf2a68304bf274. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:16:57Z), 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/JPVP02104101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46b363ea3804a58e60d1ea4f4155b9eccd82109e91d80d59adce6174efdcdf4. 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/JPVP02104201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6ab5077a1fdac16c19e680db5db2c5611dd046f5b3999eebf2e995df18982a. 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/JPVP02206701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bc9ed0246fff84a907fe43fb835b6e97c6bce870b090fcc97607001e3e8e30. 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/JPVP02211101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7e92d12cd3f0a55f889ce074423625e58694f88d2a247689bef931bbaf6168. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPVP02210201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e43e345d9e5403c26aad80a05e90814396d0d6dec10743ffb3eeac4b763f90. 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/JPVP02211102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6ab5077a1fdac16c19e680db5db2c5611dd046f5b3999eebf2e995df18982a. 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/JPVP02206701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1eb6f9588cbda71f23f199b07d095d02ca26a4b8d586d930dd182277ba0a4a0. 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/JPVP02211105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9ed994d5c6b2655e27fd5feb26d7f3d2660cf1508091fb98425441aa30c64d. 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/JPVP02211107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e43e345d9e5403c26aad80a05e90814396d0d6dec10743ffb3eeac4b763f90. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPVP02211102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27083290db5b3627846c2b029f483e3847bd93f8709fd00c32fccfbe893722cc. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPVP02210101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4c1cd457b53685cf09f7c3924cbfb54a22f12b034071e6567c0c6721f41f7a. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPVP02211103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efc742017d900741286d102fb6934955bd38fc5e2a8904a887a763414d7bb9c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPVP02300501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af371ef83f78e8f9d2befe65503684aacb46dadd7c6eba7a4079800bf89624f. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPVP02308201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93676a2e97d14f4821f14fc229a2a5f8930b8258fbd4d4f0f17784752a96f6f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:24:57Z), 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/JPVP02118607.
NHKドラマ「ケの日のケケケ」オリジナル・サウンドトラック
colors (ドラマ 「ケの日のケケケ」 エンディングテーマ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7727506350f442edd16690c67a4ba83710717973b1eca29ede9adc80f06e352d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:42:55Z), 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/JPVP02402801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35befcbb0a7930a144b398be5dfb62c700cfff52c822ecf3f2035bf16bb78ea6. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/JPVP02402804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86e0c6497da0537999a2eb6b803e072fc37167d950253429bfa2730c500bb4c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:26:28Z), 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/JPVP02412701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409745cd2ff9e45b5772fba688e881951b708ef569d0c5739fe1d9120f833529. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:31:56Z), 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/JPVP02414801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae4f3ceec55f2e76b6eb552d23140e60b99dbac5d11525ec910e32bb49e207d. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:08:20Z), 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/JPVP02505801.