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 0xa02a55e89523c6bd35007a19ce8f8345b1f64fff7881caacb6ae5325dece2b22. 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/6e6e7a01-b9fb-416d-bde5-6da2e187c997.json and https://artists.proofprofile.net/proofs/artist/6e6e7a01-b9fb-416d-bde5-6da2e187c997.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 0x05baf0561f9305aefb6cf71971338c47850dae16eec1d644d01d1dc05a149e49. 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/FR9W11400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d552c3013fc7d253c4048fafbd3105744552a5ad9a1e9324ac92bcab1321f4. 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/FR9W11400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a52223df26eb9181775082b38c48408622b8d951bc7d3a633a3161b01730e0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:19:42Z), 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/FR9W11400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5355bbc0f44fa9258fff7fdbb4de08b833c48a8345016c9ca6f7f1246e0c6f9e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:28:37Z), 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/FR9W11400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bf0704c82792412ec7ec7febe49fc7114d1c2657708e185a8acf73e218cc86. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:35:45Z), 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/FR5PI1600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa027b9d7cdb16649bec4fe9d2e070f23fc0965aa806000b135f2e509a5cd93. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR5PI1600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6040ce18cf118365e343bd91a8d868d166ff2d7094bffc2779eff251779d6983. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR5PI1600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1fdca7f929ba5ad379ead1e5260fe6a728026670d919e5a56677c5c18fa3d0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR5PI1800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625bd03b7a2849eff77fa81829ca40d445663c87292031813dd5da00fa14f03c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR5PI1800097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be0999b9fcbcef17d29e72cfacc1f55d97434aa4b3698f986e1ce3b95146c5a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FR9W12112977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62ddb1baf65c6d4193fa0a6e5e4d4de54ba8f285ec379b99d26b4af190ee73f. 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/FR9W12112983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985351924f2c1bf949d98af39ad72dbfbecfffc07e7dcc3cedcd45ea8a5fdbc6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRP622200710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aa06c1da1010295a51902df841221987256d28e2e2e12568ac0b3f70e516e9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:27:26Z), 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/FRP622200740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d414eb291d34964fb4e98794ff5c0f5d804e557f332a66363e4597c6482343. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/FRP622200750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2ac7edacb9fe58182d8e937fa7a608f10830a2342c8757fa3acaeaa2288996. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRP622200780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be542ddb0ba68ff542b4c346baf14054640b2c381b7ee636ba0727980272df1. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:28:59Z), 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/FRP622200800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd162a22ca14baefa089433412ccb89d708540e0662f83e53c71568fc118a0070. 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/FRP622400520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0732fb61016e72f71cf3ac668f16caa1f41ffee4ca43cc5875618c40a9d79d. 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/FRP622400500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d24079208f3c3c85e2edad445977ec8e0a65c44e09c09718dd3a6197f393725. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/FRP622402420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d24079208f3c3c85e2edad445977ec8e0a65c44e09c09718dd3a6197f393725. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRP622402420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4092fa4aca9155a30acf426a0059d9fa893d7437b003a155494252f4fd0211. 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/FR6V82154171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e98f01a7bb5d1dc9912c812574e94c6b092b192c229fc45a3685f07f31c7279. 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/FR6V81958371.