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 0x5d8695128633e99916c1d1d368eef96ecf2d16ba86b3b1246b773d169e950a1e. 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/e3cd3e44-d45b-42be-a789-1c10b0134557.json and https://artists.proofprofile.net/proofs/artist/e3cd3e44-d45b-42be-a789-1c10b0134557.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 0x34a5dd24aa1b18a0fa8b876c53c89e9dcecef04d02d0c1c7e64b688203c44d11. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG732235723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768fe4eb8674aa5679018d0fd79b37161b12a44ee7bac41dd50bf8957763b2ac. 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/HKG732288417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae51f8c23ab37e18c23185a72e69ab45a28417799ba5e62c400c389a2ac8a80. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKG732288418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d02453a1320fe4ac3b9a0a116b9c670c018cab3e038098d70e2c9208a9a536. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG732288419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4c2d2d7bb18ce9572d25eaf5bd3a8a1fd67911623ca49175da80de249b0c42. 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/HKG732288420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e3f55dc7ba8f316d3866b89284daa0063b4fbb6de6e83f33a93c94d71632cb. 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/HKG732288422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a2d7efdddb3cd62c130038550a655684f3debc69a6bd007f269b2925370639. 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/HKG732288424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9830d768bd3c02527649146f36df0f53a6f68e132e9efc6701fc4dfdded84c. 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/HKG732288425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde038ee136239f053d5e5d9500f2c04808446134a7a187293150edc7c96d03a. 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/HKG732236040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e864149f0e7372c1b161fae7a6da3b6f0636f80d5ac0144e536f2629740c429. 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/HKG732236041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85436de4b5c7d2d844744f26a675397c321f3a46821cc37abb43d1619a330a9. 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/HKG732236042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2497743665b6aff097e142d45e209258dc4e58b740c0302b340c056bc8c2ab. 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/HKG732236044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2960cc117d6114eecb8ec4487bc5689e91d4ffc3e3ceb373967095a3b7b945a2. 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/HKG732236046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c37bb749fb546c60236529421cdb1ad361c09fa01b0d9dbeca3d3e97c6f775. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKG732236047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84028e2311c9be44f7b81f4dacaefb49b7416e40a603cf5ed92e825b14e9a568. 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/HKG732236048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ea2e446b297f70d1f28d12e5a761c929b658b3c3636373794601e45a47ce11. 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/HKG732236049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90edbbcd726f749871636ee8b99a2759e6708931e791a2511ebbf7231cf7fbe6. 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/HKG732236051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdee15145e6e9d272373fd96b68c17007ec4d419003a984f5ff542f3946c838. 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/HKG732236053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a08716011c6c7ba61de2dbd677d5be83a3371a84a43b6dd9db18e363bb32a88. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/HKG732236043.
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
青春写在大地上(综艺《青春在大地》主题曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d3d7a526bc5ceecad222c9c30b5750586f9d804d815e264fd90b0162acf731. 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/HKG732236732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1944fe800205b9ada98a514db446a7bb3aa62375d47b4d1ee8ac8fc610edf46. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKG732236733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a247d4cb05829b81d771ae68393f64b881024af5e7ea7955165b2e3bd6d79d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKG732236734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c88058e55a047ba91753ab5736bbec141de2d94ba449170d5064d1477d0959. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG732236735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2db5282be0e3f072614b9f63352811e223c6cba4c4b017e4584e0ac1c3b15a4. 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/HKG732236736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf328c77dc58bec82c043f0d6d1f3c91724f910f87c527ca39eba7bead77a3dfb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKG732236737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d5aef586d88c1f442451b2384ba9adb84f261797e4f913526c5d42ebf67379. 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/HKG732236739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd922502cdc5df8afe7bf577edcdb965049b1124ae15afb3af973f685f3e0fc. 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/HKG732236740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9541578ebd5fa94c1989eebe0d75248b4672006283d51444efb1b3ce8eaa9bd6. 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/HKG732236741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa991e6e05c37dd2ec5956f94fbd6c839c7c2373aca7f787d9a98437605dbc043. 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/HKG732236742.
黑白键 - 《你和我的倾城时光》电视剧思念主题曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a374912bef4bf92fcf418115c2bc20b721f5be3ce6f870bf087a58b404a936. 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/CNZ632301497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0040d9d32afd4e6257bc8c1c5745328b4e78dbdffcd1ccf74933809c65d00c39. 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/CNZ632301470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf2391c63d31b396d68a3b6a2c02a435dbf72a8fcd54f882f8ac0de2f8966d5. 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/CNZ632301478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7452f18573b3a879240237d8c5490a287dccc7cbe9b737e2bd929ab87f282ead. 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/CNZ632301486.