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 0xe218426242a29a6fd90ceede9bbb610609f19931108711e7037784fa1879230d. 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/fa4db3a9-bdc8-441a-a685-41adce0a0151.json and https://artists.proofprofile.net/proofs/artist/fa4db3a9-bdc8-441a-a685-41adce0a0151.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 0x53608ed9c3ac051cdb4dc9e3e0fadc1cf966cf3c7eece1948aff9bc8c5476c6e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:35:13Z), 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/KRF361800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f374aea093ad17a0b254eca5b1b1ad6c7b488f156b415e30fa4245da500654. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KRMIM1905993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8619a5c7765d89c06fa8ae9030c7cbdcc5d8d190965f13985153f7b7559730b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/KRF252000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11151aa02cfc48b6b88f74df45762e7249869e3b4fe99c408fdf66b6528c7336. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:24:35Z), 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/KRF252302146.
Come On Baby Tonight (Feat. Hukke, Dala)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4eb71ea368501cf5080a9b44ec57b3da37ab5ef1099eaf761be78ab8040bca1. 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/KRA492100283.