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 0x2f62878ff2a3187e46e19e3925c24a39c6492b15b0a8ae7c6a71a610f9670373. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff4a7ff9-7c7c-40ca-8ac5-c5fc8a11847e.json and https://artists.proofprofile.net/proofs/artist/ff4a7ff9-7c7c-40ca-8ac5-c5fc8a11847e.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 0x0d1f349a7ec5f24bba47533f62d5344276783ef536e85cc6922d7f0af1a2457e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CH6541690510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa802139ef0bc158f9147121d0adbfb5d05f403298fb954e450a374c404970d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFZ42355349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f6e526f90534f43fdace673f5e327cd97df5f8fcc5c02fed8e9d489f7e349a. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZDA52378141.
Gangsta's Paradise - Leroy'S Draft Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c4c9fba0bc720f0a455146080de5cb1e3654e680d6da03dce333469ea8a9e5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZDA52378151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170de7c83a101f0899e263185cb14d9fa8621afbcbb12066115c67b4f853329f. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZDA52426352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566476d117438e5a09a4f7766c8ebc43c726f7c7f9b4c7e2df11b0f63525e92f. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZNWT2406230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8724fbaaf8a258e34bd14575ddd2c9b349fb478e080cb7d28dfb524d49f2e88. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:45:51Z), 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/QZRP52462472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5746bd74d4ab7c4b21203b5490b795daae9c0d6d86084db63f4d8bebd29222ee. 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/QZTB22563482.