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 0x581baeabab6f310eb865dbc17f8392c1ac82d7a139c5a93d250bba1dcb8814e8. Chain 2 (Bitcoin): anchored in block 953696 (2026-06-14T21:45:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72cac511-0e6b-4c98-94c3-383700a0a0d4.json and https://artists.proofprofile.net/proofs/artist/72cac511-0e6b-4c98-94c3-383700a0a0d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Đừng Nói Lời Chia Tay Khi Em Vẫn Còn Yêu
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 0x9c87cad3fbaa235ffbc6142a7d58928288c25c151c7f0ae0e28da6badf14b979. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/VNA0M1920462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a13c25c04ae13ac8cc1facafe33c9b7b5a5133d2b83639a7f07dd55f263d1b2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:15:01Z), 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/VNA0F2116375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12548965c3e176877fc39861a1cdf11936f31bf45368ccd04eec0404df9321b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/VNA0F2116263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60523c255b31f717c20241d6cd023e98358e8ccdafcb826a61565e589d433e9c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/VNA0F2116360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd145181858347450cb2cfaef266ed4b533f7472fcbbe37589f1c34a97c321c62. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/VNA0F2116274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edc4c791747b6aeef044a4a73fda3d769bf61a01e82ce7bb2d376428d9aed94. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/VNA0F2304523.
Đừng Nói Lời Chia Tay Khi Em Vẫn Còn Yêu - Lofi Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d1b7b9de50e679ac5af257eef2383935e8f32c23f7a9dbf7a4b1322a407864. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/VNA0F2327605.