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 0xf588ce9afb8d71aa63fc38511a48ab12c6ac6d2250a9ec2e444cbe9b15cbd411. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33ae398b-b19a-4356-a111-ddd704a70d0a.json and https://artists.proofprofile.net/proofs/artist/33ae398b-b19a-4356-a111-ddd704a70d0a.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 0x33cdfeb3dfcde337402a0f4ea807be80455f642bb6863cfc2e7ac6da5202367b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEA622301478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20579262339c28c47d410ca7bbf154f37c5e3982831e5e9a0b3e7853ec2dba12. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEA622302056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf014a107d2722dbad31cdb8cc4a5af1d27b4adb5a66b518953362c8c4fcdf124. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEA622301662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cdfeb3dfcde337402a0f4ea807be80455f642bb6863cfc2e7ac6da5202367b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEA622301478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf014a107d2722dbad31cdb8cc4a5af1d27b4adb5a66b518953362c8c4fcdf124. 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/DEA622301662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cdfeb3dfcde337402a0f4ea807be80455f642bb6863cfc2e7ac6da5202367b. 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/DEA622301478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8ff8d2c02ae4eb1062273c7702c0c519c5e59131c4f7b80f2814cd8061be8d. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/DEA622302250.
Komm und küss mich/ Ich bin nicht berühmt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3e5a559513675916e2fb173cc083ac1e738f9e8d9f4bbc18357a0bc5922475. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/DEA612400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815c3d892e84127667b0e861d881a44953ec3e92f94ac1d59b63e88811ca7a29. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2X42571567.