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 0x23cbf40ba87a8079a952182471431f332b2b0178c83a68950d9bacf8cd620884. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32e42887-abb6-45c5-94fc-351108da69e6.json and https://artists.proofprofile.net/proofs/artist/32e42887-abb6-45c5-94fc-351108da69e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Những Ca Khúc Trữ Tình Mới Nhất Của Khưu Huy Vũ
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 0x0391b2d867e12598656812f005a372fca7fdf96949562d2f6a0e58d819b3146c. 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/VNA0M1900326.
Hoa Cài Mái Tóc (feat. Đinh Kiến Phong) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd161cc9044943f004708d957afc47d825d50cbf565d0530d2dda57ea9413c7ca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/VNA0M1900461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5495321718918833639596fd469be41441ab977b35ef1dadfc1d41060a52a4da. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/VNA0M1900485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c04bfafc5bcd768699ecd9e88cb44316c8d6585a9ad6f0b875a050bd4f5590. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/VNA0M1900569.
Thuyền Hoa (feat. Saka Truơng Tuyền) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfe6158c93e1cb6458fec8df153c05e8962cd819e92a16b7bec2eed5b5266d3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/VNA0M1900594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bbcbb0c636fd9a12511fabdc635bba5567f5acdba95a24ace4a57f99d305f1. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/VNA0M1900327.
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 0xa43738cb89bde54930ab98ae19a7810b615fbf60e79b5aaa9a54a2be283b2f04. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/VNA0M1900331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a143c2db250652636cd23564f7e5278789fc72cb87be5e6d5b7852a64a9efe. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/VNA0M1900342.
Chuyện Tình Nàng Trinh Nữ Tên Thi - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ac9d609edf918b168c15dc78cd92789eef0524a8bba24292c5a057822c7ce2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/VNA0M1900347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf274f3613fc3d69fe478a45147547c74d6aef385b1a1623d209d072679b51e18. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/VNA0M1900359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e6b184fdad928f256b677fbc4e613d1aa8561b5e1ce1f31f9d79bdbaa6123b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/VNA0M1900361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ba8c70a094c80869c6542fd599ab0d6b536d8c13a308abc35ed5d5de20e363. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/VNA0M1900362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd307cc9c109ceb95c12af71438c497b21680bb5b3548e01ae7febae6ca68def4. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/VNA0M1900363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156cb2d87d9555099e611a68c1d1b256933a7b5bcb803a7b9711439fe3f5c3b4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/VNR011128953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3670112e2efcab3c57544b73e9025d4cc2f1ccb51105bc86f152aa4eaf3962b. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:56:39Z), 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/VNR011131237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a24948e1aa58179bb58e87b35d9987ba8e73e1abf028acefe2469b089170c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:49Z), 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/QMBZ92339646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb593a45dc8ee5b09ec932c74eaef16280fc09efe23be19e1cbf60f67be0c9e42. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:39:07Z), 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/VNA0F1711597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fcdd6af0b1a1fccfd5dd3178d43e56a59cace19c441cfe5e8dafa307f447db. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFMF2468813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c15ab9333d499d78f2e6e3c861fe3b9616fec15fb8009a1cf5d34582f67216e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6N22574354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7799735b77bd425695c68e06e8d2969ad452fed97e95df77bd0c4dccaa8fdff2. 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/QM7282572873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57dee8f103f8772e11b2fd93a6b850b49a91b0f201cfcb953ef3650ab6016b8e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QMBZ92589435.
Chuyện Tình Nàng Trinh Nữ Tên Thi (Remix)