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 0x2e8ecd29fba23b5bc72017b513cc7bc9bdbd84d63224b6479906bc49e629a934. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40536771-950b-4540-93a7-d724d776b71a.json and https://artists.proofprofile.net/proofs/artist/40536771-950b-4540-93a7-d724d776b71a.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 0x3857fb501f7fdd33c1017ef0c4578aaec554d01b8cfe90654b8b9b950ebf7cf8. 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/DGA0M2422560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22577cde3df2b6ff3abfd90df0717b70c9b4379a78229f92bdbe68e6579b2ff. 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/DGA0M2422561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaed7035253ba70a13ad7b283fab020be2ae29c1c18483d7281c1a1e3d792e17. 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/DGA0M2422564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ffccb35303648d6d958bfa6a3938d34b2708258f191dff7bf84a19229af850. 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/DGA0M2422566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ea3b5497e1156e55033a0e6132c76797c998bca08aba933145ddbbb5eca47c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA0M2422570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dabf6d57a2c2abe3317ca6854535a3e6ddc71bb3df7428ba352c927c73e913. 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/DGA0M2422573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1c103738aa56322a3d0654b3f0a339906c11821cb10563df3d52bd888026f3. 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/DGA0M2422575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ce4cf5133c9a280c9986f5295ad5e23dbb1be817e4a7901017f9f3d751b194. 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/DGA0M2422577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de96e2585a253b2aff54394ca57062213b99ff0fdba72f6f48fc69d5d7e2c55. 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/DGA0M2422578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b68d3f205bbc3c635a3480afb6aaa77326ace3b57595b46a094c16eff2bc73. 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/DGA0M2422581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680675e43c08649e2e9937266dcbdedad036734ec65988bf8a7ccc66a596d506. 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/DGA0M2422583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e541d8db71a4bf6273f13884eaa8a116f02140bc5521ac8a38588c992eb982. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DGA0M2422587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be44d47ec8f59382f51dde4c11b263217ce5d20a5ff945eb938761307e0beda. 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/DGA0M2422588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9259d41cfb2a6173d3005d1551febdc3b637a4e663430fb9868844ba2ae9fa2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA0M2422589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994b44ada6faa735c573ecd951a20cc2601847cfc9d359df1b4cc37329b72f1c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DGA082413286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97941983e37b5ff972247517e00caf3ffee5572c85af661ce3b0ac3e86e80835. 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/DGA092423385.
电影《我才不要和你做朋友呢》原声带
等我来到你的世界（电影《我才不要和你做朋友呢》主题曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced34382f3f0ce0ef9dabce268387c48f5ac14f5a66d42d23bfa3d7142b0817d. 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/HKC372464050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5894b6cb9136c0a53a0d8620bba9efc8ea59860e838b03e7aee5da0abe3cf208. 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/HKC372464068.
等我来到你的世界（电影《我才不要和你做朋友呢》主题曲）伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5603e7f421df9df2c2abd2d6f321214cb8793176cc8c7c01e18fcf7313b99a. 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/HKC372464070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994b44ada6faa735c573ecd951a20cc2601847cfc9d359df1b4cc37329b72f1c. 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/DGA082413286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457ece0dcb14c59f6a6dd9fc63a64e842d7e18b3c8fa6c48b3cab01d77a0aeb0. 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/HKD012315211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc83b6702f66efc5a2c84fd9147002bbedcaca716f2b8e8684735194dc12ff42. 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/HKG732126997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662f20fed5163b27cad3b7d193e3bf9293e9ac6702de79a951b9aed129c9c992. 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/HKG731622812.