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 0xb594e5953c2d50141abd00ec5b6721d825c793e498fea387ba019d6e065ef233. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/114aaf10-53d9-4844-a492-cfab1b45a7b9.json and https://artists.proofprofile.net/proofs/artist/114aaf10-53d9-4844-a492-cfab1b45a7b9.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 0x88859f2dc426e79fc006e1685795031fd7f9857d42d15b64732f30c309d92ba5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CNZ681800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bc47f28f2aed4d8096478339bd7e4d321b63187c74f1a405022a7b3652d9ae. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CNZ682000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83b427d5df7a35ec479ec3b235f95ffb7a711ea59f765cec25446396cf230b6. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/CNZ682000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6bf88a2869a79d747f6e1cbc71d8c8015f0e6c917753364e3687f42c3dd09d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CNZ682000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8ce1e5feaf04e05b46797751dea21203b1a2cfaea4a89b915ef7c5c22ebaa0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CNC072100426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8462d93e1f4223ad97c986abd18f485e61d40d64e4d5a7acafe9e2e6852b5fbc. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/CNC072100429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628fd07e2ee7849613361da94d2cdd6b11b9cdc28de21a40f6370b6d382a0077. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CNZ682100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cb82796d4dff159120d3ccbe935a5b3283bda15ac8c157a309455185934ca7. 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/CNC072101561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60499ad51d79a61e85a105c557ee65a3c9727da1711dedde912dba38d943566. 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/CNC072101566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646b74d4fa5530533d96cf439c56f755c612e3be7cb9db5b2a382e2e92d96b63. 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/CNC072101560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0add4333ab700ececfa7e14e29551e2e6d71ac13ce2a077301863b9903b7af05. 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/CNC072101549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6668e22d8933872499e73ab364f9eb50ca2940ca93730ad1a64a8ad6fc52b394. 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/CNC072101565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35078d758a3fcc3597751e9c2adf9f47164fe391911b3faf5933dbc6866d8fc. 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/CNC072101572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdbbd7607e8ffbb320e2ef6c283966faa94ee8ff9ab58aa40265ad9d2e9fc5b. 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/CNZ682100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16180f52eabacc98012787aa017a5dc4b7f2e8b31370a9060b54fe34fa7aa80. 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/CNC072101573.
最初的美好（《假日暖洋洋2》电视剧插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc38fec168a9c0fee53f8c290b5513898fa18188234b335e1a52e095d4c2ba5d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:00:47Z), 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/CNA132300528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f4db2b58a07d871ce98f61695796f191e0d37545fd803d0382f5d0d8cc057b. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/CNA132300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22213a823557e2d4f7cf30091094847c9774b568dbcf53e27e5f678ff64275ce. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/CNA132300524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630d026de5ba58cc350a91e2bcfedb01e2ce506ea82238fb0c94345aa6da99fe. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:29:23Z), 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/CNA132300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0280a39c46c1c318677962283b5600c06d7e5bfe1bd6dd730a1628b4c7ad8ca5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/CNA132300535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa348531b558b71d7fb105a3f5a26cbe0d5521b5e01da74ef9d12b86397f4816e. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/CNZ632301099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59922773383bd8afc0e5d4f0a23bca14bda5b78ae88c8069055f6160637529cc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/HKG731661265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ecdf0613e00aa7f065e08b39a824f4df511d7b5f8e400d36f19d9b972bcbfe. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T08:13:46Z), 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/HKE672401356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8395859680ed133165db753f59f8ca12f4bcbb113680a34a47da22cb28f2fe. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/HKE672500391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32b15fe89896ce31592fc3f88a672056e5747d7aec3dda9681caf21e60abf9d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/HKE672500393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3e4b844dc4f7b2e95ae4adab8d3802697286da8e67223b0301f3de9facb025. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/HKE672500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75a02e5e3ffceb4f01e04aceafb0ea1977afdc3ca763cc8ad0ef77ade39d8a6. 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/CNZ612400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644f28f2f4d650790edee0445d0795bd9e68bb02d3659ef5af2127bb9977e877. 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/DGA082406944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659e5befef10440530305fa9ccb4caff281ca9593032bc4568970160d9ac0df0. 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/HKE022258015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e9b434efd2ab10437a5444ae5724a14de12e94784c3cf78b9e249a2f88b362. 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/CNZ682100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb225dcacad1ef871b66dc57562fdaccc84576cb4edbeb54456102d9ee5f6cd. 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/HKD012301099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eef312d4fe28e9cc8157c771486033a29524343040920271c09c6baa408c552. 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/KRMIM2203405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11506d63e50da09a4cf2f283872b8dedbabfa255d5f4ac66318c4abe1ffe590. 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/CNZ682000236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ab36253479c9d17c3670c78ee5eb704b37f2c7981b2c877a05d2863402a943. 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/FRX282119266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18aa429c0af23ed7f3469f0aa19f778fe71fbeb0a15dd1b3ef8ac592d21da7a6. 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/CNZ682300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fb74b7ccdf7b90e73d87ca4d7989d08e1973aaff6c12af7878d893bf5f1de5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CNZ612200010.