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 0x463bfcf3725e14540385f1c5f2387db94922b74f5833eac47d965f347fb7fa84. 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/ab8e18d1-08f7-4f57-8533-904fb9e105b1.json and https://artists.proofprofile.net/proofs/artist/ab8e18d1-08f7-4f57-8533-904fb9e105b1.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 0x09f90dec2e2a61b08c49e323dc79f292d18a305bf987fee28e0f7df87026efbf. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:37Z), 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/AUBEC2145349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4089c1d13943f7e3c3c13f93404cbb79bbc039c849f3f172e6caaf7a73df88. 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/FRX872196283.
Thương Em Một Nhớ Bao Tiền (Lofi Version)
Thương Em Một Nhớ Bao Tiền (Slowed Version)
Thương Em Một Nhớ Bao Tiền (Remix Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf35c9295f5ce13603f81c4bee09ac375a6d9893e7e420c28027fb1aa4fe7a0c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FRX282216085.
Nắng Dưới Chân Mây (Newt Music Group Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbef182a6690926a9983e634193de62b10bdc449a74354ee708f16d99524aba1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/VNA0R2502785.