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 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 0x2a4de631d29b7e11f0e3d8b38c350ac7b10467b4543b357166bfd38f304ced68. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0c93068-7ac6-4a45-91aa-d332fefff62b.json and https://artists.proofprofile.net/proofs/artist/c0c93068-7ac6-4a45-91aa-d332fefff62b.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 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 0x175c851c4533df4834aab4edc8713fe96b7f7376994897fb0288754731271073. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/VNA1M2280901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa63d3845953875088fc026977e29d2dcd664fe45aede01b4b89422b379c592c. 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/VNA1M2284489.
Con Gái Là Bảo Bối (Lofi .Ver) Con Gái Của Tía Là Con Gái Rượu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe334967278f0368be9e99ec021f2738787d1e775c74a7ecb74707b175d22fc. 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/QZWBE2307270.
Tía Em Nói Con Gái Như Là Bảo Bối - Con Gái Là Bảo Bối - Remix
Tía Em Nói Con Gái Như Là Bảo Bối - Con Gái Là Bảo Bối (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebca73d8acbc820e1123ab2ee39ea5def8de9ae48dbfeb6c88544cd4f0e03537. 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/QZWBE2261501.
Con Gái À Nghe Tía Dặn Nè - Con Gái Là Bảo Bối - DORI Remix
Con Gái À Nghe Tía Dặn Nè - Con Gái Là Bảo Bối (DORI Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78d332bb8cd26d8e121c26b2123614ffc7547c6c9a490c1f4b76895c7712cfc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWBE2261541.
Con Gái Là Bảo Bối (Ới Anh Gì Ơi Mau Về Đây) - Remix
Con Gái Là Bảo Bối (Ới Anh Gì Ơi Mau Về Đây) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caa2b32114e6318d429ac0ea764cc15351364f0226e27fabbe0e247ceb4a95e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWBE2261521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4a1a4930bbc5d5da7b78d37aa665b1a0af112aa826fdb9db1bfc414b7a9888. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWBE2260932.
EM MƠ LÀM CÔ DÂU (DN TEAM REMIX) | Bấy lâu nay em trông rồi mong
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3d5e327499f32c180683d6e2958f9c832a46e7fb0c18645896967c2f944aca. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/HKK972222254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e6e5ad6760b85e96a9bd66ae7c0e6445c8209ee802c67e47e8183701ec8983. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZWBE2257770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6faeffdf8a4ed431e960a3953ddf45d8722dcb06fd12b3c3e5699515171effdd. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZYHM2350590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dd3e298fafc9e29330453a89d49014b2e121533d5887d26aa39c07ac9fbd58. 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/VNA1M2404089.