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 0x115364e15bbeb531454f88e4439b1f3998bdc98f1f95ad7f8272cf87ba423e39. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51d33c1d-8e64-43c5-8932-a1e134519f66.json and https://artists.proofprofile.net/proofs/artist/51d33c1d-8e64-43c5-8932-a1e134519f66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
مهرجان - شاري و هما بعوك - مودي امين - كيمو الديب
مهرجان - سكينة سلك - كيمو الديب - مودي امين
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 0xdc6eb5e880d1e6d41f6e147d00a52eebe9f89cdb80c626e25952e0cc14284504. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/EGA252307565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66638eefc3c1bc735e78bdb8e4896463d124bfc21754a4504f00f227a62f2c35. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/EGA252306947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128fe7cf36a37484ba5bc8dd1271b65a398be351e24c888d4f34b00f88a401ae. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0H2498214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf171f07a22788e6c44b2757933e218684fca220846168a7d1bdcf1a1e355727e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:35:11Z), 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/EGA252505062.