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 0x293b15ad63168b2bf4cdf2ec763fc3b4404abdc59db16eca261eaadc701b1167. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af1ee79d-d3e8-4414-90e1-b9274af4789e.json and https://artists.proofprofile.net/proofs/artist/af1ee79d-d3e8-4414-90e1-b9274af4789e.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 0x9b650a3996964ec48a8370a4a94661ee63b50b7133f053c918dc01945e57543e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPSR08004710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da0c9fe8afe24dc29ff094ad78caf2e13a30a810b39daec1f819319ba4d7dfa. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:54:37Z), 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/JPSR08108770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb63fad9e5f8dfeea67af46171887030412914a9e22674a85336019749723408. 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/JPSR08201040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1272043e5635953a6820e28d4af063c84716f8511ff421209f840b0a36f33d. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:28:21Z), 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/JPSR08225610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637003a786dfaefacc2e4c193f6f64d4d58dfd1187fff51fe746126cb1fc40e7. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:42:09Z), 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/JPSR08441680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4e5ef2cbe82c555a3402c888b63a20044a39660ef219ad274410a9804ff029. 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/JPSR07928730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b53578f44596b8531c8c58abccd578b45b941b739f2541790c0c75822e6efb9. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:22:01Z), 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/JPSR08200630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343ab253a455b7cdeb8fe615d8507c7a59747e442bef70be29b8274624cec65c. 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/JPSR08004700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6af3207d252e779739c6364b024be7a7f1574ef40c3fee119ab4e2a809f000f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPSR08800730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96712b9979defc1b24ca540eb1b29b6a9f8776d9d8d13f9d5b79f5b3a700821a. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:03:32Z), 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/JPSR08011700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf158decd8e74d7cc298cf4a1047d457f9a5a75716c81cfb30820dbfb6a0cceb0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/JPSR09186759.
かもめが翔んだ日（スタジアム・バージョン）
エッセンシャル・ベスト 渡辺真知子
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076cf5d7758555c18b190d568a317ef4a1ff2c79b0383a0f91e4eda3695baa93. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:47:50Z), 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/JPP400700641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf25dfd138bea003eac2a93d060ad7c22448ab431aded1eb54bbfc28336e34d9. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:26:52Z), 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/JPSR07803540.
いろいろな白／かもめが翔んだ日（スタジアム・バージョン）
かもめが翔んだ日 (スタジアム・バージョン)(2007年ライブ)
かもめが翔んだ日（オリジナル・カラオケ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf86d6342aa2fbbb595e78cc0131120314147407ee9d75917cabd605e3a2a7ce. 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/JPSR07820220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf165345459a58927b2b897907a960db1f6e36ef83282dd9c23107cd924eb93. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:06:50Z), 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/JPSR07820180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf25dfd138bea003eac2a93d060ad7c22448ab431aded1eb54bbfc28336e34d9. 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/JPSR07803540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7a5c3f2e8a361c3beac1747134008abe7f06c19795fa06dea2b61f767166d6. 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/JPSR07806830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a251227541d35278827655cd4881b0a09bfe809a3de3618809118131dc4ab6. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/JPSR07715530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b3f7b6de644e7a220ca5af60d951677db7702e7ba27ca14eb9f6f8cae81ff1. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JPSR07803550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4fb5ee58bfb238dd9b751f62454b235f7181f7d0b885cbb4ed7d22b58b1bbb. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/JPSR07806820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd6c32d9d4b37dea247b835d1f2a9bc33a48d352a76166d21e1a5fc7b5055d8. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:49:29Z), 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/JPSR07908270.
私はわすれない〜人生が微笑む瞬間〜
私はわすれない～人生が微笑む瞬間～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872d6f5b180353c46ebd6ccfe7aa53eb038794e7225dcd2028728cd41112d713. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:20:11Z), 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/JPP302000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74e4fe4b56f5c6c6c3db29118ca68a9becfd47ce70646e473d21c59d230ed00. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/JPU902203004.
山口百恵トリビュート・セレクション
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf098a0865239a29eccb88767f7f26db9e298b67260a36cc523b5e5601644afd9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPP401200614.