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 0xf9a138024e3b2911a7882c6e3a4eebf27085c3c2b6ddd7c247693c4cb0392588. 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/74d93f80-d2fc-49f2-8d41-e2ac11faa8bf.json and https://artists.proofprofile.net/proofs/artist/74d93f80-d2fc-49f2-8d41-e2ac11faa8bf.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 0x2f50a55655224bd41328461f1a3a6684154f2fccd62aa0c9bfe2c3634259a323. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/VNA0F1712751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4378c93303a1ca724091e47ee2ce11e7fcbf5e6d8d156b09f011f89158a29f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/VNA0F1713020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d925800bd4cd565499cdae2b414f6ea040422c870a35c145cff06701c4adfb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/VNA0F1713243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd858c41980050721d05c09e1a6ee7bfa9541991fbee090a36670d72b45300c05. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QM6MZ2431765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d770c8c299b2c8b6941cc812365fe503bd1927a29c1057f14d02081ff142ff9. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QM6MZ2431835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918ed8f76828a458dac836daab29ffe1dee77f8d4eed833fdd37c8abdae11418. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DGA072461326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d4c6db5fe19004f53fffabc088506b2d06c16b11fdcbd45665551408d073eb. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/DGA072461327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35834d5a14717df553efd6eda5d55885476f9488e316256cf7fec4a42740f5a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMDA62444575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883a9e811dec50f1403e7e250d48e6e3c7d1a50af795a304f5363568ecd584e4. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QMDA62439395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791f9650cd7271c5d8eadf1851180e1c1c8fb598a3b833777aea65ac41ce4a73. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/VNA0F2407355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bb571ca8c3a6875175ed2219df8cd2d61888bd0c45b1c8b4dce39487ada686. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/VNA0F1712765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478b1ff960857d80ebbaca29f33ed71dd0ad4ef2f53cbf04eefb0f4078ac20d0. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/VNA0F1781021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb756d76ef26f59a5919844baba47dd8983446121f1fdfe7c471a598e17494ece. 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/VNA0F1712931.
Yêu Em Như Ngày Đầu Tiên - Vũ Duy Khánh Ft NVC Remix
Yêu Em Như Ngày Đầu Tiên - Vũ Duy Khánh FT Việt Còi Remix
Vợ tuyệt vời nhất 2 (Beat) [TongDuy Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2ab945dd8074a5bb5c895920d9e1fff1adf7671b1a4d6bffeaf883d796a67f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/VNA2J2502825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea17f7461934e70ce621a1dbae5b571643bbda79ac6e23b2191f46b03a8b847. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/VNA2J2502829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634d12ffbaa644e817894b2f645efae0d1839e494804c078855c032cee3e64cc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/VNA2J2502823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6205125ce4f8776eb654c976c9b2ac38693beaa6229d7ee270dfde7b3acaf0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX872584304.