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 0x465f3bca7e4eb7cf7cf9037a9ff0ada5c4b9c38d31d28714c419c751a6b09304. 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/ed11971e-6ba4-4746-b4ef-2a1f115c3429.json and https://artists.proofprofile.net/proofs/artist/ed11971e-6ba4-4746-b4ef-2a1f115c3429.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 0xf982937f88efad36c6aea80f6bc1b64036500a59348e81aa212fac1e4312fc1e. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZNWT2372645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e27d46a9064b14dd962f50eefbc9d575812317f9b4319d5a4ce29733fa6b120. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZNWT2372646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a0c80cc79febbd2b2f617895af49516e6558ea8ae4626ca56733e17a84a982. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:50:03Z), 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/QZNWT2372648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d65f4e9dce419cb69e17b4829899dd9e4679005836c5a00e263c2ea4f06feb. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNWT2372650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1bf8ed4882e3a87dc97de92a9c965ef9c734f4500dff66c8f1dbf8e489af59. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:39:49Z), 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/QZNWT2372651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f74604c374f1dfe33cde03b71c9d3fe6258b4fa0c6a6e2d10703772f37b8c9. 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/QZNWT2372652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4946158c0d59c83fd17b19dff1754e7498f5eb8efa175ca776283efbf0d53bb0. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZNWT2372653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bbd900040c678e7d12e425de97e2f05f908ba838fd9a4ee9a9a2a7c921d9b5. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:08Z), 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/QZNWU2345637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4122bd7d13e1ab847e3511be68acd158d6e5b8bf1191d18c755ac2b71e37337b. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:47Z), 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/QZNWU2345644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9cbc2505520a4c6a0e518f12d4d0b29604c199bea5dd8423a68cb0c796082b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNWU2345646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879b5f663305d74db589cef58840cdbc71e5c5b2e7cb1136dc275c48fa7a7a9f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNWY2332451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7449d1a9f2168a191dc4608968eda24fce0928b1608952a44178f366922601. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNWY2332452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23663425e3f547b68d1f0ada6b73401d72d1e2b7bdb864879d432f0b3d6aea6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZNWY2332453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d4078955501b7c3d895b8563e53b4b829808818e4d733ef2a2ed0f4c169543. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:12:18Z), 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/QZNWY2332454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fe42ae6e20146cbc69e43a896ac7b5164dac38911f89b698981fbf87d8fbaa. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:40Z), 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/QZWFE2391225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f2068265c6e33c639c7a8100d35f76738c947b61960e9609c39b91f9d161a1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWFE2391226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2d3539dc787627d2104f8ead2724d45606fa68b55c9bf60acdae158b0468f6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZWFE2391227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f3ee5fa1869497986248d69a87ec9126bc17422b6a8d075849449e8d34f26f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZWFE2391234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a4e048dc30fda2a78942c28c61d885e122ab09fd7b2533e9399cd1ba45a445. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTB22491411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15f860c7f64034371dfe774e2723299b8ae3bc001e334cac89582e973b90266. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZTB22491412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2915cbaeea5d1c6237344a4a6d1951b8fa808fdd44b3363e2edadf116f12832d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTB22491413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0beeebd1f00804ae75e637038f44ce41d10101c1d70f9e3e24695be0ebf6af. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QZTB22491414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ec86e2fc7ae6f1eefcfce3d09d03e9b42581dbbc20b4e0927be91a91413a3d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB22491415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c735297c540529859f5eaa95772de32eb9bf17a4da2a4b58708b89c43f8da98. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTB22491420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315e010d886edeb4af2a05e18eb397032b361e3be02045afb7b60180d16c3782. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZZ7L2415368.