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 0x592e0a12b91b7df398059f5a248b9263a9fc12e6cf6f107b83fccad1996b0c88. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b3c5811-bd73-40c9-b4d3-941d5fdab4c7.json and https://artists.proofprofile.net/proofs/artist/4b3c5811-bd73-40c9-b4d3-941d5fdab4c7.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 0x450d6f6ab96cd7949e7dc4d6503b4f3e4b474bd4134e44ea70591415a4202c6b. 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/HKG731875357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4801615fb17a595dd9ead7b2a837a4658714d51ac13e2dae5fa8822446192225. 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/HKG731875359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0c9f45c989c7ac6dcec1f4150f6199f239b27ce30cb0439fdfb74e45148fcc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/HKG731875936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3318d93970910beb50030af3d6acc760bd617d8b55d2833077721f05b5e6b2a9. 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/HKG731875937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d21c11ba9fca74e1c17115c7eb18bc10a2178f48892f77a0486846fd609894. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732137257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7def454d7719e4b2d4ba0ce1f19d4876c2e182bd854408a0cba186164e9848d. 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/HKG731625234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c09e57bdcbbcb0b38c9de02442069155e380c6eaafdb11684c360ca1524a16. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG731625240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8273c7e0d5b33fb6a3a91bb2ace8423f764a39f9e94df7f6d45425a0291860b4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG731610979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd61a914b90d68d2102ac65858d624d40f76087ea0d508dd1e36f17f55c43ad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG731610982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3a75cad3297b79e6e4bfa316dbbf3e2844d9703291d5dec3c9b86437843bc3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKG732236640.
每一颗星辰（电影《我就是我》 电影主题曲） (合唱版)
每一颗星辰（电影《我就是我》 电影主题曲） - 合唱版
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88bfb435867b247fb909095892a6d8b88aea61842a0ff1d3a85eac808900783. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKG732235634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1063740e50be878f82418e15813aa40a7877964944871466d6e82a2ab296be14. 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/HKG732236988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561a487b615e9c43104a489c3484e05ba9ca1ebeb975d50ef744367244bbee10. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKG732236984.
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
蜗牛与黄鹂鸟（电视剧《蜗牛与黄鹂鸟》原声大碟）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c6a17e0290691087d31bea2d27b57065b593e4309f205dcbbad9485f08050b. 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/HKG732236389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10f5fe67ea622be345ee58902629cb02b2816cd58817f3ad8a44d13ebf280b5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKG732236390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf256d50bcb5018d06d37e6221adf7f2642fe1b4c35d7e19225a0cd0a88a4fad1. 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/HKG732236392.