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 0xaaf7f966f266c284d4edcc97c2f986ff7da1d1d8918ce3f116314da633d096d0. 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/586ebf82-3da6-432d-afd0-87c16de2f712.json and https://artists.proofprofile.net/proofs/artist/586ebf82-3da6-432d-afd0-87c16de2f712.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 0x7c88745ac9548e8fb8c3c15b3c0e1e921771e814a423d90f39fa42a88eb4de4f. 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/QZTLA2446019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8926ad28e3990e66efef8832e73e21f6a7577dc2781f90faf1acfa734b1b38a2. 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/QZQAY2313138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4996bf215a303d6d7ba6221a6158294708f014c372b38a7fa18f02a19cbf3c. 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/QZQAY2430102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99300ed831c466ade79018d0c404ce57c7e89216409ac3a6cfd3c06af3d7aab. 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/QZQAY2437684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df2261451f0140e49680edc97f877dfb637c5d5a774e6de77ea8e168f5a630b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZQAY2426488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc295369d81ca420d957d7c7243de40e329e3b88deee34de838cf6fb7c5cbddba. 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/QZTLA2400395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc5cff08db6ee4c7a97a7aa14bfd055b0641ba6ce16196ffc6d74d9e22dd5b4. 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/QZS7J2432756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be5ed7a3530e7de1c7cb4d7f51c524a25e3e54f5c1ab5cd73eb360409b55ac2. 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/QZS7J2474931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c11a49466c1b2872a389c376fbb2c2a41498e240c12bb215763679174f4d8c0. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QZS7J2481734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93f1d3f52e92b12e8d3d3781dd7a5bdb76ff83a6a5936d9cb061ba4e0c2c506. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZSYP2416839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4067ef09e99152382e81a425d74ceeb366a8524a6cba8f0d20afe5765c4ace3. 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/QZSYP2480784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c712f61eb0f7d98e665fb0f8cac58695b4bf3991398b1b5d93edc662bf27ff9. 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/QZSYP2422673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3aad465e6411dbaee94b80d052a94904ad4bf4184982746073936b11cac7aa9. 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/QZTLA2472107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcc91c7ee3a0360ee08bc923b7385503320dc71bb1f2749d90d23974f589af7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZSYP2383556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380046f56b1099edb952a9e137336a9f05523c3dc1ef1654b9cc740735507647. 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/QZSYP2388884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec78bdccf5631e4f42ea59f2690314999ed3ed6d1f84b14c89de9054a3ab1442. 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/QZQAY2306486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4644f504c2b9994891a6c2cdd3d0f332068112255e68e804d15016e7b28dde62. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRR642400345.