Khánh Ly (born as Nguyễn Thị Lệ Mai; 6 March 1945) is a Vietnamese-American singer. She performed many songs written by Vietnamese composer Trịnh Công Sơn and rose to fame in the 1960s. She married So
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 0x4b0de1c7f2575e7409f3ab248150dcf4ebd55c9a613ba0857ff617ca03b6d61b. 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/72c0def2-7614-4859-94c6-d8aa6d13a5a0.json and https://artists.proofprofile.net/proofs/artist/72c0def2-7614-4859-94c6-d8aa6d13a5a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sơn Ca 7 - Và Những Tình Khúc Trịnh Công Sơn (1974)
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 0x7717f76cd57729c244a199ca5d4a5c0aad0c6d94499b0050d6934d4abf387a91. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:09:40Z), 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/VNA0F2007080.
Tình Khúc Tiền Chiến Đoàn Chuẩn - Từ Linh (Tà Áo Xanh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e512dd1fee6ee97099483ebaae7a597fc7a592c491858c767603fd3d468aeb. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/USJ3V1086319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe111fe880d777419e4938e063d0c3a0a4546415d231d3b6b5bc8018c9acd2139. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/VNA0F1735041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84713ba0f587d8ebe660598566387dfb13a9c414e14f1991f7c29c45dcb0eaf. 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/VNA0F1735047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89847554aa64df195329372d9c5e1fec6e9f930db163d96c5289b39c05d6472e. 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/VNA0F2007215.
Băng Nhạc Sơn Ca 7 (Tiếng Hát Khánh Ly và Ca Khúc Trịnh Công Sơn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63397b341c174e1f9da4dddf9b71096f33bbadb20038b20c314e8793fafcf5a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:59:45Z), 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/VNA0F2008405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275abc6b23119dfc8905fc8de5438ae6b459c6c9bde5fd8667400cff480912c6. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:20:56Z), 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/VNA0F2008406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79563cf0ba168b0c0c0ed8f23569db74e098bb59c43b50763c0411e031f57f79. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/VNA0F2008407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c2ce2ebe41c05d55bb3e8886e1c9730d28203f1334ac643e733440e3aad8f3. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/VNA0F2008409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc6c419a80c6f9570b42a2afef788d0cbc5bbf434ec7753aee8f8449172ecf2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/VNA0F2008410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf23b56718e51537dc70b7a8af43dad4e8df73691301702fc6e9516792d5df4. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/VNA0F2008411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d07010e25f1d0a5da4076db5a1c01a4a9d65f1a2f8c17a23b08cb30ec51b47. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/VNA0F2008412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5c4a4a967fb599a4debc12827e4d0e7b72eceef685ece9b810880a0cba5c0b. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/VNA0F2008413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a5b175bc3154528a85fa0546f99c0530ee37f443f53e8bbba3b6fc573698da. 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/VNA0F2008414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dae1aac2fef88e96e8fca353abc78b76bbf10c99ed3e5ca215659956d846a3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/VNA0F2008415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf708d358cff336808437b9af4b6454e245e422c674dac7a9f9c4af51dceee2b4. 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/VNA0F2008417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a862b059b070042ae8db394ba59fcc590b5f8e745c16bc38ca6a65eab48f459. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/VNA0F2008418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9637557122f77f031fc0c26cae8d897c4bca0aa9374fb67031c4bc4f43d9b4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:42:43Z), 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/VNA0F2008419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aad3044898460eafd3c5443818ca666c35b2fa936509c91a607b45f3a474cae. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:10:23Z), 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/VNA0F2008420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422b2839de123a0fa558ed0b7768bbfbd061d266b05387a4a41fc8ed830f117f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USJ3V1105529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574773b07ee43f529d680eda9aba4cbbd43781f495720e9df2921eeeba8e8c90. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/VNA0F2007623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52d27a2ce86605480ce268f9dfbc1fe3ad81e3a90feb721940473fa19ca6189. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/VNA0F2007203.
Băng Nhạc Shotguns 12 (Tiếng Hát Khánh Ly)
Những Con Mắt Trần Gian (Dĩa Hát M 3617-18)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c500bd919b0f18958aa320f0580faa5d9e9370b217a529d217bd602a96a8900. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/VNA0F2007130.
4 Tình Khúc Của Vũ Thành An (Dĩa Hát M 3643-44)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182332fe942f645856379e9539da20fdc66f41872788132b078ad52fd93fb04f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USJ3V1106591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4578937901d2ec4c4fbf33f0e156a153268ada767620029e2a421df24c0e3cc0. 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/USJ3V1106316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4578937901d2ec4c4fbf33f0e156a153268ada767620029e2a421df24c0e3cc0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USJ3V1106316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3a963132eb3cdcb8502120dc4e68e9831d724b017e7b6ba9b95dac304f4411. 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/VNA0F2007291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1c2ee4e6235aa0680f0f3d7447b81c44165977d6f1def2e5395a8bc80bd50b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/VNA0F2007294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989eebea9442471f32fcc049b757c27561ada2644ca3feda17c1d4e3f1c399b3. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USJ3V1173264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fd9baf402a43b5fffc8cd8b09b3d1d890557c3a0963c3bd0c78da83e393915. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/VNA0F2007335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780d4433e8c37b1853366907a5330926064652e67818f6b8696706612aa9fde4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:28Z), 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/VNA0F2007339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078d3a01ca81fcecaeb73f2795d9aa20aee5f92cea6aaa83be0e24aea8afe8f9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/VNA0F2007340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc86eeb896880fa7cec006415e02fb4dca23e7d629a49330b65b8827384cbf1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/VNA0F2007350.
Xin Mặt Trời Ngủ Yên - Thâu Âm Trước 1975
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616e1b71ff4b78ed5d05705035caabbab41decb129569044302b14ab5711454f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/VNA0F2007410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd8f7d67c6c146de4639fda4596af45e880bc7392ebf33a35ed3e6f4a5d961b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:35Z), 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/VNA0F2007431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808816d7ae8849cf3c239a617cf76f034fdac716a3ac660dc80bc2a1267913cb. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/VNA0F2007439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e514da24ae7b17c9b91d07df3dbf1c9d5409e4cade504da1a14534e0d31880. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/VNA0F2007440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4bfb8fd30f44b849712d807efd66bc555aae7ccf326df1961c64de9fce5dbf. 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/VNA0F2007441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30932a818cd2b46af31a7dadca69f1905b1a92eb584c680ef050275aaddfc29c. 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/VNA0F2007445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46915b3deabca2ec1f77d84f1f95db3d6be1b0196a8882bd7073b8cb9782566. 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/VNA0F2007447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee034a299fd2a5e008ccd1ca174e499a5cacd361e18612258e84418cb55015e6. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZGCD1800431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b04ce9418075d359e761498c536092d81893a4f8b0f6b82ba7bb739c415de3. 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/QZGCD1800437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0090d6a588048e4cdb1e499e79c96d917cb1f94ce24d961fafb7983f0359610. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZGCD1800440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a332436cc901b9b205ec36bebfd1f24ff55cc1bc7a4e9f282cab7b81a5efbe. 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/QZGCD1800443.
The Best Of Khánh Ly - Diễm Xưa (Vol. 1-3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec16d924b1b86201615919501e5fcb9fda894116126c6c209a68a8ca306f2cf5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/VNA0F2007480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cae134fab97f10ad2cdf1eb5594220b36a431157572359e423e3f9e98358bda. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/VNA0F2007483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0e0537b0b8afaa3cc9d9434af4eaba509997940de2a917a26d4ea8a1d8d090. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/VNA0F2007495.
Ca Khuc Da Vang VOL1 - Khanh Ly - Trinh Cong Son (Thu Am Truoc 1975)
Ca Khuc Da Vang VOL3 - Khanh Ly - Trinh Cong Son (Thu Am Truoc 1975)
Ca Khuc Da Vang VOL2 - Khanh Ly - Trinh Cong Son (Thu Am Truoc 1975)
Ca Khuc Da Vang VOL4 - Khanh Ly - Trinh Cong Son (Thu Am Truoc 1975)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c912732090de1f4ab04d5652f77bd4c4f9ee729d6613aa8b1430853d16f806. 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/VNA0M1935800.
Nhung Tinh Khuc Chon Loc Khanh Ly Va Le Thu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2945bc685560510ec366c14bb7cbf6e367a3bf59d9878b2bc06a7e46252a90. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QM4TX2216341.
Đành Rằng Tình Vỗ Cánh Bay (1984) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba2e10ca509ad17a8886e3974b4c7ba9ca989c199401ade93aa28804dbb0bb4. 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/QM48F1046905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46dc40a59c8f037221d2a96fb76ada1342a6c2e20637d61c53d0a4984721787. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TW2091479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b5584750f91113031be4664bd3371be26fca0e5516b4bbf50ecb49f947ea6a. 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/QM4TW2090821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77346c1597a93d063cd03ec569c4675517a0ecde1d722edc69d723a204accf36. 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/QM4TW2091182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3047ea3315c9ec00966eee143c42cec5703ddbb03b17dde63ec54d2d5ce529fb. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QM4TW2091033.
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 0x351bed114653dca0e06e717a18a524eb93aef2befc7ec22d1f86dcaa7143d81d. 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/QM4TW2090823.