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 0x85071ba92dfe2580ad69155359f31f543d5afcd3663338f721a539ca16216ee8. 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/18d255a6-e50c-412a-a094-31c660aaa85d.json and https://artists.proofprofile.net/proofs/artist/18d255a6-e50c-412a-a094-31c660aaa85d.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 0x7a92eadc5832bd9d9e750353d76c508fc81fe80573d16527b95b8f845b87e896. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGH1756128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d90ad43d22fddaf08dc462e9ad9e31f6c0f59daf4790e3f7de9062cc79839c. 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/DEW872108274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e333b51644bd888d16c00d347715ce3e5da18009655993cae392e40b77f9ed. 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/DEY472279104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d90ad43d22fddaf08dc462e9ad9e31f6c0f59daf4790e3f7de9062cc79839c. 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/DEW872108274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae584daa8a6afa7fd2cca49a1730a2acde46ecabbbd78b8a51bbba4858fce10. 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/ZAYJ11800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83a37184a5afcbfa0a657d4587d05ea347d5dcc86cde1fb3fdfa9a7f8bb43fb. 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/DET751900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17291fd48e6678e11cefb98e18b84c777b00cb726019bda960ace08899fcc463. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEZ651200312.
Fugama Unamathe - Culoe De Song Serenity Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637a1ef355549a5105a7a71043dcbff1b3b701b8274dde2f07079a9901edc897. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZ651200315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445fe7ebf75907ede3959348c27373553cf207a7aa348b8158d86da172266d09. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:57:28Z), 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/DET751900021.