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 0x4e6191b05235b0ab43ae6df1c5da88479a0fc2c612aaa39a2ddfccc0f2b7be97. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/243ba7b0-95f3-4752-882e-b9c2d6cac62f.json and https://artists.proofprofile.net/proofs/artist/243ba7b0-95f3-4752-882e-b9c2d6cac62f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
LK Nhạc Xuân Disco Remix, Nhạc Tết Hay Nhất Việt Nam, Chúc Mừng Năm Mới (Vol.1)
LK Nhạc Xuân Disco Remix, Nhạc Tết Hay Nhất Việt Nam, Chúc Mừng Năm Mới (Vol 2)
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 0x18bf9691fad6c947afc3703b989f7e9979f42f13f7ff7db88ad4901c9c6ca415. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/VNA1M2281639.
LK Nhạc Xuân Disco Remix, Nhạc Tết Hay Nhất Việt Nam, Chúc Mừng Năm Mới (Vol.3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf250ef8b0aa441ce8f10e61d11c2e386c2130cd75bda4d3abb3b24f369e94a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/VNA1M2281995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca869ec47536a56aa3f5e3000cae34302579b94a841b79dc98a50eb5ac15b8ed. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/VNA1M2285019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7e5ec5c904b14fbbe4d2d256693894a145282b6e4a95395db075afb7621589. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/VNA1M2285023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f71e8e1445fe52af66107f5b8f9e2e13382900d4617d50ccffa8fca7c5cf7a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/VNA1M2285117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9500d71cfad45ad49703bbbb37105263efbe7f959fe1985b372d3feb447dca9f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/VNA1M2287225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9dc27ee282d047dcc5f8b9858c764ccc558ca7ef5dbe1730c743b78f97f096. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/VNA1M1500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdff730beb353fc72e7ae439cc0b122abd890aa48c3645ba75c1a565d6769924. 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/VNA1M2400953.
Mùa Xuân Trên Thành Phố Hồ Chí Minh (Disco Remix)
Ngày Xuân Long Phụng Sum Vầy (Disco Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858de3bd98d0848e53beff836d1a04c782d43ac7ad3a20f95e996e62a06cd2cd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/VNA1M2402851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13f4a1d952d25ff10bae1de57c62202df8960c5bb7b9f9e8ce01d0f6d5177ca. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/VNA1M2402856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dc5783d246933df47efea051403dd50b1a0146b63001804dace1d996f6ae63. 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/VNA1M2402850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2defb92e1d9016724e6f5fe8a04421bcae25c65f45d98471139c5acbb75a75ab. 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/VNA1M2402853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483c39ed6748e302901cec6f6d584ff129de87e27448cfcf5db235f5e4caad09. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/VNA1M2402855.
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