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 0x90a72bbbf3faa7a9580e6d2f1a2bb7593ee0347927432f3a16690b1768b83b82. 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/e621f206-1b73-42a2-b0eb-12c5edda2b9e.json and https://artists.proofprofile.net/proofs/artist/e621f206-1b73-42a2-b0eb-12c5edda2b9e.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 0xcee0b9a506f5ddd674ee5d6fe1c82877f76ffb597c45dd9f3dfe7c7da4061752. 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/IEFJB1200494.
Through the Years - The Very Best of Shawn Cuddy
A Daisy a Day / The Wild Rover / Red Rose Café
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0374220ae64f93d1fc2828e84a421657bda0385cb51bae0c3bfcc8da2060c73. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/IEFJB1100985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd02b615543a0b2b38045c55d26d84d1c721043fe9514d54b06aed9e21653ca7. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/IEFJB1100989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf945f8107178a1fa60a78a4f3a5fae4918149c86a10ab541b9566e62b271496e. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/IEFJB1100760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ad165b20b67641012b600a6ca8e0460ff54dd51c88d923a6f23da53f88af99. 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/IEFJB1100769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2197e5726de0c7a8f6d1014cd2ececd95f45f89ac825484e124966f27a1baf. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/IEFJB1100876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067aba0c77b73a9512b8dd9291a8a99bd9f209cca92bee00f81a41b8e195b938. 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/IEFJB1100877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa289058b289ebb690a673599292f80bbca82cf0e33e2de45d00dc0058ba9c3. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:42:49Z), 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/IEFJB1300285.
Everybody's Somebody's Fool / Tears On My Pillow / Lipstick On Your Collar / Who's Sorry Now
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a41d295659163cfdc1621b160e0d17bc358ad41b1a543a905b3135e62f08661. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:33:08Z), 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/IEFJB1300289.