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 0x91788b9653b80c5a4b5bca84a956406d081d615d8900f884af8de5cbda8eaa84. 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/13cc84c1-5972-4be2-8d18-5ee5c0c2d462.json and https://artists.proofprofile.net/proofs/artist/13cc84c1-5972-4be2-8d18-5ee5c0c2d462.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 0xe7dc5ef08c3a31ce9cb427b107fd74eb0116ae0ba1139c422f96138a807af84b. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/GBSMU7759894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f42b3511d876045cbd101b303271abaa24aae956ceb3deb6bec4fcd87f61568. 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/GBSMU7759895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a8b2ab954fa1df87e94ee217cde3df378d7f5947a7e3d858f918b67f5cedfc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBSMU7759896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594585b948475b6104eb39c2e3550fb3d5bd20b0ce8093e91732635f9386b2ac. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:05Z), 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/GBSMU7759898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72210efd9076036e9e068267af6ce4625996fd47ca8f224e028ec2dc4df77de. 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/GBSMU7759899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc03a43f6c3f8eb11d131264e4c991ef3b025fd22ad37a0369d053b99be5758f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBSMU7759900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5968649c084d52fb5e97e9047adc24d38ed38eed34ab28777e0f5ebc69596a66. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBSMU7759901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67aafe92276a2ae3e5e983d8ccca6e7a5f385e6162d8e41bfdc4a3a0261c3a9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBSMU8718750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67c2a9ca090c8f27a05a9159cbb004a6f570315894be5314c85d8c0731a26ff. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBSMU8718752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb78a33e072b921d2fe4627d1c889637686c52d293c4d6557be82423253d9d15. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/GBSMU8718754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea53679c793a656b9d9dbd85fb5aa6233d3fb6a17e018a8f9e3ab8ba56467ed9. 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/GBSMU8718755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a6c3f86d44c7f4b28e749c5877ec1751af96cf456892eb4af53b495ee26553. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBSMU8718756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3135531dc2df804628c8c8bc8a92c27838a9bc4d50b6ec0301efa9b8f150c0e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBSMU8718757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2d8850b8f36bb4a4cd35f269af26d80c8ca379d6858380549887f547f97781. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBSMU8718758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851b37336c1b3da2518b911236b31cd3295200837463610377b3e907bc48ae59. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBSMU8718759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a44e6966ef682b65efc8a0bb55c22de8985d47a8d9131d14ec9aa7ea6e9cfa1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBSMU9829712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd411f0ad9db88704a83e808df795f3125dba439bdc35e5b2d2588c6f61c61a18. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBSMU9829714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53efb64fd449d9ca3bb2b48a664ad7b5c515f77536fbcb9a1b24c1907db5970f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:12:08Z), 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/GBSMU9829715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc27e8a4308350cd89048076efbe4b612350e27cea51704671c5aa97b4bdda29. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/GBSMU9829716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc2c3ee888440e13fb311ef3d78487ce23de155a3c64c9c05c2566191ee3c0d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBSMU9829719.