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 0x71140590b41e3eeedbcebe2279fc829d362c8150d56f7dff21f6522c1dd01014. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fa8d61c-677a-489c-97b8-bf432ade958c.json and https://artists.proofprofile.net/proofs/artist/9fa8d61c-677a-489c-97b8-bf432ade958c.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 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 0xc36b73f774309a65c187b6055da3133e59408203fd19c80f3d4f0b161271bf20. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKJ341550019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9406324fb8ae4034ce208d61aaea125dbc542ec26068e08f26393f2f5ca44fb9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKJ341550020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18924ed5bd5b818dfd380aebed2670c707ec46cdfcc29aaa69489671826d58b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKJ341550021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff529420e1654c83c46909e208f5ccbf349dcaac538d2b5d1f77dbe50ff1159. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKJ341550022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3c1cb036b2fb6cdd254cbc7fa579cf3dca4cb6f8f3f4fd1ea77e2ffcc0b6b0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/HKJ341550023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ade6fc3b30273d678511963d2d2ba1908548eaad74bc7e97b101a2f03006594. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKJ341550024.
愛莫忘 - (微電影 "愛情來的時候馬來西亞篇" 主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9270b2cc010263d1dc6b235c324a814c00fbcfbc150f8222cb21b36298ee54de. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKJ341550025.
鋼琴哭 - (微電影 "愛情來的時候韓國篇" 主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c39f436c0a0ccdcf057b3df8e35a655e12a704964d1ddb526928504a4eb1f3c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKJ341550026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc45f0f8c893620cd9ae3bce15ff9a0917fdd1a02138b059e5040c94a61474f7. 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/HKJ341550027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e99b4aa0cd57eca8b276125b764c79d3ea3061a513f9351eba984209df9ebb. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/HKJ341550028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244064f89b4e34a128bdc17a777a1787def2a649c4fe396e4799f1162e974781. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKJ341550029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32af52ef01d847b300d5e85fc64e11192732ef450f4446eae9b34c631aa0d41b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKJ341550030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0799659ec1cec334e999f73d113e54b621c70588a144e21390aa9fa336ea2e8. 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/HKJ341550031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98917133b30e0f8cb09fb60362912c690fbe50c96fefd36d9b36437541052fcd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKJ341550032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd447ef63560d937753e406ee51f79280ffcc516400317f5cb5515741c1978b0d. 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/HKJ341550033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffd00f22ac9a25d110077bc5bbffda0f2d889f257bb09878c2ae2cc96dfa58e. 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/HKJ341550034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9093151b16e7c366693470e2578503150f361d4373b60e853330b969c9009c. 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/HKJ341550035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80654a05bdcb3d85dd82ab2a027d53df46fa852f63db38b59349eda3911de721. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKJ341550036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f26b81ae388c287bece9d2babd8899d04aa56c299b8ac9409c19f8a9b8fde69. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/HKJ341400148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59711ab886032ba451cd2ceff794e8b5b94f1f3f26e6d9f3a600704d7150f44. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/HKJ341400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432ebfc1d3565806b6fef340c4e3be3fece38e8562c2905fd697701a38b893bb. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/TWDL72206190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd21bb6e2e9b761c5970cacfa5402fb617cab0c098e3c99a746920c9238b7f5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/HKJ341680073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10a5f419b1a87bbb54fff752436bcbe0b9e51498ea31a2f2214d0fa47b3ebd1. 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/HKJ341400014.
我們的天空 (實況劇"我們的天空"主題曲)
我們的天空 - (實況劇"我們的天空"主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e3b626d9f46094cc7629ee818168a4ff0bbdd66b1a47e33b39938f2634f4df. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HKJ341400089.