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 0x29478e1943277436ae18a84c104d43d532774d3c4713e768ec1bb034aa63c1ad. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5dbfb519-b9b9-4387-a23c-bd05f48b1806.json and https://artists.proofprofile.net/proofs/artist/5dbfb519-b9b9-4387-a23c-bd05f48b1806.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Levynhävittäjät - Uusia Isojen Poikien Lauluja
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 0xd9fce841335532406f5f60532f834a427daaae703710f6a8844f0d946e799af1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FIVDC8200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62a8f38d33b603e4b98587deeb887fea57bf790d5f5f4bbf783b045db9ebd06. 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/FIVDC8200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1b1fc485b31a87380d626dd1f94fca31f1af2bf056214f6b5e2e8af4701506. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:56:54Z), 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/FIVDC8200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7352a3406739a4968fd475b2e676db1a661dd2bee5dbe62d0756b3ff0f0e4d2. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:51:22Z), 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/FIVDC8200031.