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 0x09b84312bb2a7239529513f185a7ff04e2dff423645c1e347ee5f5aca94e0bf9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72ca6a45-e18b-45e6-a376-196f5767250d.json and https://artists.proofprofile.net/proofs/artist/72ca6a45-e18b-45e6-a376-196f5767250d.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 0xbe5b264d766c16f8f3a6afe3dc149b55458f4a62d0993910b65b15ab3cecd619. 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/QM6N21570715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcfe834811e766227df513e6bec569cdf2fa21c99965c88f8584b7d58ab8812. 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/QM6N21570716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a9dd467d108b8c8201af657b5851570e23ab8c7de90c0d86b2ffeb3f6be9be. 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/QM6N21570717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55812f78b32d933ff5f1ba6d09fbb2af541e34ec7a04c3905d795adf92888877. 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/QM6N21570718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713f500c97784915a17dba24508bd906814935b6a0dc20c382c4154f3ad77746. 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/QM6N21570719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a9587140477b07673298f2de53f47beeae1ca97f862ad4fb5fa12112c7d7b1. 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/QM6N21570720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda84c2d24ae274e5b25a9a534b5c18b9840eea04a99e37cecaa422f938c77fc. 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/QM6N21570721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb91999dbc0043356793c01de59714ccc17aff9dac8a3b384dbc5a5b2e8c7640. 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/QM6N21570722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baaa251290b7b10bf2f7737e495ddd00b251b45d4c4cf683764490708897bfb. 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/QM6N21570723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936139f2a3a5f11cd4b98c3dae346c8c712463124194fdd73f84f3c2cac4ac9d. 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/QM6N21570724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19de9df47b4fc5f18bc26986d65d840ccd98a35c54f30fe982657a17119496b8. 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/QM6N21570725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d65a68ebec61c0b11775c9798fc6e7f2e57ca3128a7583a0de333eaee3e7c1e. 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/QM6N21570726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9691326836c618eafcc216357464ba036c1ad5f48a72c3ad9b8a91baeffad1aa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGLM2269671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07d08a4e505dad15eb9d2f7894efcf4a82ec06f68e226c0409b1f892fb0ff54. 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/QZGLM2269673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe997e7a37b1027cc2fb1ed93b586bd71de8df1c0c7310de46fe96d7a169a1876. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLM2269668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55812f78b32d933ff5f1ba6d09fbb2af541e34ec7a04c3905d795adf92888877. 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/QM6N21570718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9fb9f022292992b87737d9fd33c3e7cd56e6421264095cb821bd2c1d3caf66. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHZ32138620.