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 0xee18d21858261741e2df0187925a6bab9ddcb49e247b0ce4feee6e0d5680b903. 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/95d2d452-4f91-45f5-9fdf-a8337a599757.json and https://artists.proofprofile.net/proofs/artist/95d2d452-4f91-45f5-9fdf-a8337a599757.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 0x2eb57988ea2d6af0e73ac365e3892529477b5dfb1e3fdba3709667cf28995ea5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ES5530901594.
Shakespeare In Love - Shakespeare Enamorado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8618933fed732eaa99d794244843e37c81a032c5d2790e9ced6e86dd41edcf54. 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/ES5530901601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d9b3a1def1a3e4d7f154ba5038f0ed5ddc43bf5d39cfbcbf95f385f009be01. 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/ES5530901472.
Everything I Do I Do It For You - Robin Hood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bb464428a3725d71726accd0ea5c9325f310d08fe5c2a8e57d58ffc1f89928. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/ES5530901466.
I' Ve Had The Time Of My Life - Dirty Dancing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451d87f4666e7960a388d57aa70b0d01818568b2c04c89f0619ab4d6f4e7279a. 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/ES5530901561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec087168457628842c6e97f7cfb5e922638158087c6fd3a76bc8dfefa069f2b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ES5530901467.
You Gotta Love Someone - Days Of Thunder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0c8c9f0c32f4bb0a0842a2632b8aca1fcb6f8594db2624ae687e1466099d7f. 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/ES5530901474.