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 0x12c7e2d863e177829a3fe7f42c40db5b627dd480f270d2f301202adad33ec60c. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed4f0578-c387-40e4-8e54-f7265ef1db71.json and https://artists.proofprofile.net/proofs/artist/ed4f0578-c387-40e4-8e54-f7265ef1db71.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 0x483952fabce0f7b058b7679112cebb8e2f30a2f6c2f005d2dcd1ab295f26ec86. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:35:03Z), 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/QZES62289594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2200b75dcbce2b98f4be5a49469c5b33b1481dfc706621762f0a0524dec3dfa4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6L2243914.
Oy u luzi chervona kalyna (Epic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14db2d2b30347b800e4aa69ff418fec2749b45b469f7abb2f5bd64707667832c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:22:04Z), 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/QZTAT2201717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682887d0ca56314635f2579edc804b48dda0b2ead22c395feffa34d22a53a001. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTAY2297903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c1dc22c41de5e45619c66a0b0713f6c3ab1a1b6a7350dd040d774e838d7452. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZTB72246842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7869aa57e0a594297680e286454b1595e83ff05a8facd7ab0fd1a45f3a794e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTB32342134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754e0bea1dbae97d7d9074dd2dee7d2e88dd65a48920a54a8198bf5d0a73f203. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA42456137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d2cd6c494f997cf374ee4cfc8a67e1e4316f1fd9ec2a510ac1e545ca657786. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFYY2535143.