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 0x518b7904baa5b55cc894a850efb29ec9661b49cec0399be2a48b5a98c5b9e5c1. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2b4089a-eb00-46b2-bb93-3dfe43ca6ce9.json and https://artists.proofprofile.net/proofs/artist/e2b4089a-eb00-46b2-bb93-3dfe43ca6ce9.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 0x344742f5b0029e92a4dc7b067f9a230eb3516812bfe5f2742647582203422ba0. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/ATAJ12100293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98069319540425fea2d287a750ce5efa44f75d621d9efb2f6d72196096b85b7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ATAJ12100294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd657ed01a8f0a8f7e75d3310a28ec2a7faa20f4ee0b4e7e8543033bbc264a48. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ATAJ12100295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4926005a3ef63732d77e5c04816da62bb0d905eb77b443e192e59dc9c84c64. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/ATAJ12100297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734eb13daaec907f34546d9566e4ed734fd601ba94f1e2652408dfcc62ef05df. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:11:11Z), 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/ATAJ12100298.
Zasto se ljubav za ljubav ne vraca - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ef4a44aa1212922d5ecd764f9249a082004fd52294785d93b6acdeb6d42d6b. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:36:43Z), 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/ATAJ12100299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1dc8f5ad4884c24ed030dd84c3fa11eda81f42c1cdae86662d5b8c943892d1. 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/ATAJ12100300.