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 0xf06459f3709034ed6dfaf96f91060f90a9ea17736e7d9c8ab5dc915166b17e97. 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/e2b13f73-2697-4698-8f10-f9307f0cac39.json and https://artists.proofprofile.net/proofs/artist/e2b13f73-2697-4698-8f10-f9307f0cac39.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 0x74a48088fd3d95606abe042b8a07d7bb738d7d7e1d8b83ea51080a89728646bc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPTE09904430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4cc602524083409553b742010a03dac6d61fc9f5645a679ea216af9215fdb5. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/JPTE00005100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041e8dea7d682cfe02de079484de57e7a583574ab08821cf94c84de5dc6ffefe. 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/JPTE00005120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a7f806166c89b6fc85040070c6e192cd71f4345849ebb28325e1c225ad4864. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:26:14Z), 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/JPTE00005130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc868c7f18a9a939269b862614157a267f2d6a066e2884d9fb0ab16fb843aed33. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/JPTE00104630.
セピア色の雨～シングルバージョン～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd571cd04812bd12fafec54bc1116205cc4510f04e2918881e18c1ffb60a00c8a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPTE00204570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e078a9496557aa933cbe43319bc3d4bd52a1a077b4f306b9805735be478f37. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPTE00204600.
チェウニ ベストヒット・シングルズ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec521447cb727598cb48593035fb39bf1153922c79462baa4491d4f0e5bc910. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:03Z), 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/JPTE09903670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03750f4a2de77ea92af51cec632e2be286c5e51dd25cc6b2dc68e1d64e757731. 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/JPTE00101820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a48088fd3d95606abe042b8a07d7bb738d7d7e1d8b83ea51080a89728646bc. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:57:36Z), 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/JPTE09904430.
トーキョー・ムーンライトセレナーデ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f08c2d79fb5b5875a097bf34c0f63cc74cabfc680ca2c41b4ec1be3736ebf29. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPTE00005070.
時代遅れの女になりたい - シングルバージョン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e046b627668468514b0c1ad0a8d4d62ac88e02a73c3f8fafe0998c7b90a05f6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPTE00203480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398c6aa973a6dced2edb6261e0e70c4883a74522a78a8cbd9364c7e9c8646c68. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPTE00200460.
セピア色の雨 - シングルバージョン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d12429a144f6a73e78625d47a6e451c6a1ee705b0fd6d67a8e2d04aca08cd5a. 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/JPTE00203470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b67ea12b8a855f79ca841875a8bc10cd7e6a4e2204fc88cce5042457393fff6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPTE00200470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300194eb43fd59d413add7ae56ad2c2dc8723eaec47c6bbb97d096125779dfea. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:29:12Z), 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/JPTE00402520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdb9c5f3aaab957f65a32112ef8e3f4ce770eba0ad2b45e6b4de04e3081a79a. 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/JPTE00304560.
チェウニ ベストヒット・シングルズII
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0038e080230e0abea7a6f08af2bebd2889759c06fceefcba79457e959d1f66a. 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/JPTE00502280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58278da85a3a98f891f521ad1a9818da2d213501301da58562575e73a8599749. 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/JPTE00707530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4dd449de12dc6f64bce9ff9a10bf480bd58017825d6037b78bfc989168a99b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPTE00502290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f0c96cd8b049e31ea06e39d242ef28f2472303fe5df45cc488de2dcb0e9def. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPTE00205590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc1455612b18842caf8b894d18b3077b03259278250ce732d729a66b57baf1c. 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/JPTE00702030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928d39b2f8a9787ae5323a128d6d05cfa988ab8423d035102bc0c074bb91c541. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPTE01002940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f17a473dbbf24a77e9cabc35a5747580df39ef7d550975243fa19e4eca585b9. 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/JPTE01301790.
チェウニ ゴールデンベストアルバム
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bb171036fdd6bc1e09b56ed964b5afecba03f505a29a7f947794fe28be4b62. 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/JPTE01601720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff129174104d790736e957c39be9ae6deaa80638752a2481edccc0984f70cc8. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/JPTE01201220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5ca45e08d86e7eb035406a5831318492e5367f506500f88de5a9ea421ff45b. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:21:35Z), 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/JPTE01400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24ba4ac4a6077f5d0baa5936d8984008e7be1c83d6b0f963ebf9cd7b340fec1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPTE01502830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd2890fce7d38192f9dd2b56a157077cccf1bdf6f78ab40ff04c385b73b0e82. 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/JPTE01609800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2ca672fc29905f116304703369379d3473abe681d6b8a794231f89493defd6. 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/JPTE01905010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c38d9f2aa2e09ba0038c42df40dec8e1dfbd5bfe75aeb0956fd6e4630198044. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:05:07Z), 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/JPTE00906220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46c49823ef445919a6350d49cb152284e95e67075e2e77a3ed4d8acfca0421f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:18:30Z), 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/JPTE01707820.