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 0x3d2d97414cdb086b5d26fb175649bda45168214edd18ecdc3510260df4e2da93. 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/194a99b1-fa52-4ab4-976f-7de952eccb08.json and https://artists.proofprofile.net/proofs/artist/194a99b1-fa52-4ab4-976f-7de952eccb08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Đi Giữa Trời Rực Rỡ (Hành Trình Thanh Âm Version)
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 0x3c5cea27d33b07beec525fc1ccfcc2cdc71e8dad304434b84e0c9c58e995472b. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:58:38Z), 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/VNA2F2500565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34bad140ebe3f1c85c06885f0b69c8ac7e7f1e914584738d96b402dec2d68c6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/VNA2F2500628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d56eb68c658512b0a931c0c56b02d2dee71bcf981b2d0b304bc04652846f7da. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/VNA2F2500659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb905fba311480e5526bbc28dd19edc21ae7063f6b3e86aaf66b2e9bead8f47. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/VNA2F2301228.
Em Chỉ Im Lặng, Spotlight (Live at ZLAB)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc518c23a799388eb3909ae17eaf160b8f5b386b7bfd7e9b01b2368f052a3b7ed. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/VNA2F2400603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12ee82044279fd659ea88fba48c93b71589504d5dbb21e4be4ce8d986d621d3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/VNA2F2400557.
Chỉ Muốn Bên Anh Mãi Thôi - Live at ZLAB
Chỉ Muốn Bên Anh Mãi Thôi (Live at ZLAB)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1273585929cd85d60a22422a8b039f4c53dbb7d8e7aa5a9531dddd10b3011f1d. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/VNA2F2301229.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a05d13b4bed2d38f8413e4c24faa6041fab61aae96d092beb9c932cc39b97d3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/VNA2F2400683.