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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d9746eb371977d90de6ca134476e38023a6397100913c7d7d990c0e6ce8991. 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/73efbd25-5488-4986-b3a9-c5f1afe59d8c.json and https://artists.proofprofile.net/proofs/artist/73efbd25-5488-4986-b3a9-c5f1afe59d8c.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2d78b87ede49a40abe51bfcd6ad4c1c21299d8f9136608c3d08c6f529a2fc6. 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/ROCMA0600624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e50d62aa29d09ec72343ff3d675effb6305b572e77947c9f46919728c192f1e. 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/TCAHN2317950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7260c44bc0c7d3f40a7da076bac9a68b6e889026592bfb98a838edc403449dc. 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/ROCMA1711048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c439b24ccd91e90add1e4726e7df64fffca4500efe5c7cf24cafc134992ddb4. 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/ROCMA1610771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4590398459fe394df671cee58a2f64f7266f57dc2b023210dd055bac56e16cb. 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/ROCMA1410123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9543f61750597c6168a33b2291ed7914aa7d2b011ed9c92110e41143ab1758. 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/ROCMA1409970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7a398141c5bd2c34940311fa058e533693f3471a29e9568fa2cf5221fc69e3. 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/ROCMA1309577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2883908d626aecbf8fcb6b4b0041b33521042876f39f532b05b3aeb15edc0d5e. 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/ROCMA1209136.
Electrified (Sagi Abitbul Official Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1b7026f7e8a62c31c895af75d6c043dc8e6e3db830315f72753d9ed2515eb5. 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/ROCMA1102710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a20c6c5d79321ce5ed4aad01526832ed4e921234564fde45086a3a9656bc2b3. 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/ROCMA1102932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd257ae003bbbd85f7c378307d98dbca2fb904d2a9ea5ce5f82a191d53c954137. 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/ROCMA1002190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536f468c8e331abb9c824100c064d72e7f58bcf0b3231c7b0f5dbd8cabf14085. 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/ROCMA1002292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5d752f391018d55b58554a1bbb41433a363c86cafac5d8730094caed0c5e3c. 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/ROCMA0901709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f7635026c0a1700d0dda961ed36fc722583ee32a160d784e8542b9d0bc3fac. 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/ROCMA0901568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be81463eb3e07c0d4f526323dcb2e045741f15b204e094434926b038748ed85. 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/ROCMA1103019.