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 0x995aa8cd28a79944a0a98dd8280bfa33a505ac7fca32d82ac08a370205262667. 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/92b5024c-f70c-4e3c-a5d8-7a97b23340b7.json and https://artists.proofprofile.net/proofs/artist/92b5024c-f70c-4e3c-a5d8-7a97b23340b7.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 0xd921b21bb1c122712a7a433ad2f8fbe6cd5a9ebc62f98390c8f9e7d3e0259349. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/TCAAU1158598.
Dat D#*k (feat. Swagga Fresh Freddie) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762eaf2bfbcc721d3dc00d4f1c07cbefa40fdad2cf9648de634ac13e5e649103. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:47:26Z), 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/TCABE1256582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2f1ee9dabe8ef99be620e42fc338bbf8fef081d3ef1e13688edf6e509da7a3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCABE1256611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175959926b480e3b4ff7ffe50064cd79a3a66bc8c2ec11850bef4a90e9d9236b. 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/CH7811113304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763abfff1f56693cd2072c9ee119bbce3189575e645e0062f2136bb1cbea93a7. 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/TCABQ1325655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5630c799c6828ebfe717ca5c8238c06099697d07dd0c72ae54e99a269a7b39b4. 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/USQY51186566.