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 0x57a0bdbd4728ed629988146fe8ee67463d019ba3e8a5a715b2e7b894ceed1c04. 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/1c956b32-4cf0-42dd-a3ce-b10eac485881.json and https://artists.proofprofile.net/proofs/artist/1c956b32-4cf0-42dd-a3ce-b10eac485881.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bagger (feat. Sizzlac, Caput & Moe Mitchell)
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 0x1685590c328eef5cdfdaea0514c8552d5cdae8949b7900fb3c0a84efe74b2461. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEQ120807426.
Weil's nicht anders geht (feat. Franky Kubrick, Caput & Sizzlac)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee52b88577d1bba2de0cf896419d8b6fe1174f93318d37ac6d3b01012fc212f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQ120807430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f7c965115b0c7fd65fdc01cabbc554298dafb64847bf9d295c1796880cdaf6. 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/DEQ120807432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00283447e7dcce20bc96251d6d3977e64885cbe2b74c05065d1faf9e3c475a9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEQ120807436.
Brainwash (feat. Kaas & Sizzlac) - Stiffla Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5665ef722b7298919fae259624bdb458526d388fde10d4dc7b61afea2c4d3047. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEQ120807446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa53699d093aa25f71338219b5dda646afade08e8468e36573188fd23243109. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEBN20800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544f1eb63d9f528550b308d66105b7dd418aaa9e35ea20303d1265cc24d84c59. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEBN20800063.