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 0x1cc015023eb96bfe42fa8a13bd92e6dce96250c5f34b58862e66d4d2c27b40ca. 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/3ca10b36-9db0-49b8-8592-96d1ce1048d5.json and https://artists.proofprofile.net/proofs/artist/3ca10b36-9db0-49b8-8592-96d1ce1048d5.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 0x67d51e99775cd6865479e55be8df0e59ab14058a568729cd293d45b452992648. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR26V1636996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b769e78820cfd04ae7aa77e1fccf287f42fa12c409e6db39dc96ceae7d4344. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/DEPI81702983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c946985fec1e567d4cdfe4f914d19b4125999e0fa6bbc4b859f4aa7c96dfaf7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DER371487602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0a5e5e401bc14afee7281544b84ab4880886b0fa88913192fa45ca5a56e8ac. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEPI82021361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5a8ce4982fccab355832b3f1de8b50d27e475c9eabb0992926c82117d7e762. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:51:58Z), 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/DEPI82021364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6842da795ae188b6553b27156af5d57ad31b0fd7bab503d36747b3b8621db26e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:08:48Z), 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/DEPI82403218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38f3a0365857d77352644c83eb86b959f89a72c7fe4918d45d53a7923efc86a. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DEPI82403212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173de2b91e98f8b6e99e24ddf72f4b14ec18605557865ff459d58bfeb9fedbc6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEPI82403213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47daa74fbecfc09e85c560e14c7d3c20fcf34d58d8b63d80baf0360eff11f3e6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:03:50Z), 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/DEPI82403211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b621c87837f713f10085a48a2b56dfbbf79616fdd5fb6e6601a5c2716f181ae. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:55:40Z), 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/DEPI82403209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d74d282aabadd1d5e9bff57ad100c24dce2b9a4273f56c22991d44737f1ec10. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:14:03Z), 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/DEPI82403210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c94551eddf3fa20846a713b6d44aa4983e6998b6401a734e062654ae389b8ca. 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/DEPI82311503.