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 0x087223c188438deb5a247c289a287b9f457de6637f14c97e92e1ac5c087eda4c. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/faa2c1eb-2f8a-44e3-9091-f7a5421cb1d9.json and https://artists.proofprofile.net/proofs/artist/faa2c1eb-2f8a-44e3-9091-f7a5421cb1d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hứa Đợi Nhưng Chẳng Tới (Cover by Lê Thu Thảo)
Vốn Dĩ Không Nên Yêu Beat (Trí Thức Remix)
Vốn Dĩ Không Nên Yêu Beat (Việt Còi Remix)
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 0x8a05452a437cd2c1305d19353fd6014be3e36d8449cb855d99a3b56d183d5b47. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:00:17Z), 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/VNA1M2401681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896dba250c59e3d28700c7a277c35e9e8104e894a9aeae9829d0c79b39d84bd1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZYHM2500721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4df56f4351afcee1ca463c4c6b0521921db112a0aa5f0d4d1a83efb9715aea. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/VNA1M2403523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa32bec43b5a5d140ed9c5590da24cac5f83ce058792545a9810030c93821e3b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/VNA0R2501498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9ebb960a1e4471224ee4818410a2b386336aaea63b6b5d7052dcb9559e2442. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/VNA1M2405087.