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 0x559f5be2b9eedd9b65ab22499d6e51272b32d26d4a66bcf1df043b1f3bb43f1f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5f633d0-e7e8-4fae-bbec-4b7dfaaf5e83.json and https://artists.proofprofile.net/proofs/artist/c5f633d0-e7e8-4fae-bbec-4b7dfaaf5e83.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 0xde5fbbd4eb8622927c6abd2e9b62c417a5fcbf9a9f69569748725a9867f8014e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/US3DF2172382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6687e2cf5938effac771d5a8af97e856b0d651d81159524b28d887e081cd93. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QM3DF2122232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc960fd8b7778d46a2106f3aa136140465fceb9380fa0bce35b06a4a92b803097. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QM3DF2142521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faedb13f2e087e3aa42cf5f70d9d2b64f955cca18413619d86f140077b16fef. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM3DF2181645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35193f75c249eb21bca092778e7cfe6bef1fa6e555a4a1ea270e7e5536a86550. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM3DF2186856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264b1cbefa0245fcb106592aaff12730c4e9307f8840adb09f91dc594c48126d. 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/US3DF2205477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd541fc4bd26666379c5d93fbba9d6284866e257852518be80060b4e91b5ee683. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/US3DF2214996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c56fa7e13c38ae42e859d9d76f50ba403b74f2c9cec518c628057736e2b0baa. 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/US3DF2236660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd942f98b20f690a4701c5da84a542c2e162f6371d1cf7336eca2dbad1cec2977. 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/US3DF2247006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955a6a5daf0a00613963897b6e27242afa895d1c609f532292fe1909211adbeb. 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/US3DF2256823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4c942db3b0b173d5ca6fadeded16c1b68f46bbfe54fe761a70f8081d37584c. 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/USANG2236219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c409065a43d3e78ce817e4ed25891faa32ac50bb52099d4b5faffd59335a689. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USANG2240279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6feec6605ac8a2ea2a3246ec6d107b2f149ec6a003d1f1dd1a2d1e5257ce1eb. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:12:38Z), 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/USANG2245430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37d5ad654ec06411853b386428349c0eccfc5926eeb58e181f84673a115ce09. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:03Z), 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/USANG2295384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d14d87d9a0bea154f87dd7267b2fc222d15cea1924384200ecd068d24316a8. 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/QM3DF2200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dabeff0fdb93ea7058a55887f1f8442b396046654b7db7982a7f96b17a57e8. 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/QM3DF2255993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bca1a3b2b86b16ec613ec1a530bc7bf3d989d1f5743b853e86692b3c4c8634. 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/QMANG2252372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10747b2162a30d7dfdd4d802b5c7e27e64307b813ecfa94d922d9d690da3dc30. 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/US3DF2445511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fcc17b1ebcc56b2f6cd13d8e0cf9419a6ca18689c3ee160489fe51dbbdb2ba. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US3DF2483169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0b6c770d43ea30115c8f40a4c16777d9af4144ba46a2068cbe37e3b9c8ec42. 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/US3DF2490569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec2339b135894c4f52bd7bf41843a833c7e33e157ee5d9abec7687b79d21158. 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/US3DF2490570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc5fc3becb57186cd1e8c104d398671810923c6d1ddfc92247cbaad1414ceac. 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/US3DF2490571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa241f77c041243a37990595de33d70718631974bb3f56f112f89bc4f71cdae. 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/US3DF2490572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562dc5529dc88163eebd637b4c8827a6dea1f086c9f665dc32a6125dd2211ffa. 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/US3DF2490573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f2ad38a5399345cef260b9079daac57db8dea936a6c9fe05ec488784d8ce7b. 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/US3DF2490574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e3ca7455d7e565c1fd9bfbee3e2ba4abcd0499e2d970bbae1b6a4e4508937f. 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/US3DF2490575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d9895ea9802117671570eea3c26f96c3c9f2ea2b7648956cfbbc4a061ce569. 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/US3DF2490576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a09e4c41824392f483fcffb758e02661311f46b7a516de3a68816391ba218f6. 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/US3DF2490577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8733756dfae4ca13d072b0bba0fdbe742e9956a6e33c757ac3cb7df9bcf688. 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/US3DF2490578.