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 0xe44c75178918a25c34c9d49059d3cb76f81ee87cd9eddef69812776c427a0421. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a43e54ae-3508-443d-bb39-7091137c10d6.json and https://artists.proofprofile.net/proofs/artist/a43e54ae-3508-443d-bb39-7091137c10d6.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bb1c928d13282a928bdefc094ef609b5d6266f29c03fdafcd43d8c7a548f69. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/VNA0F1741386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9596319806794d2e670c62f5efb25f610d05f552856ec2ec3e963097593e8a4d. 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/QM9SX2501861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a4c947c325ffce35473da39f1783c036d918fbeab89de87931a4d9d36a4e64. 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/QM9SX2501862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7e3330b3f617359694febfdbef72a098a2b23c666251bb2837fb9c57d9558d. 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/QM9SX2501865.
Ngất Ngây Bên Anh (Je M'envole) [Remastered]
Giọt Sầu Trong Tim (Quelque Chose Dans Mon Cœur) [Remastered]
Hãy Dắt Em Về (Emporte-Moi) [Remastered]
Liên khúc Guantanamera - Những nụ tình xanh - You Dont Have To Say You Love Me - Quand Le Film Est Triste - Autumn Leaves
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a62db7d81930217f8004a1960caf55dd5676511c3acdea61efcaeb64fb32d2. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZGCD1801238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb283e0efb5d3c9c576439c55a38177dd915812d4e522d636f3203a1ca6fa93ad. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGCD1801239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fc93edb717ac9471acd32b173216b3fbd6b25c84a59e120690841406542bc9. 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/QZGCD1801240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a89ec92268aaff2fe2d2e8dd56ff70fe301d751ea122928317d6a6d6af643a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGCD1801241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188615ab40c892f35c8dad494119a02b1ca6da75f40b8b1b5f7e134e8372886f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZGCD1801242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba02db6c74835dde7c0ee39d9d596750b8288e7b58c18d0fe1685112f35d9c7. 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/QZGCD1801243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194f4c60268b746c0fe39cb0ddf27bd21d0a59c8d84c552e70f96de184c5e00c. 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/QZGCD1801244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434bc361d67d3d931f26f366569a789264ffafb52e4a7eedb067a05295c136b3. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZGCD1801245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0e10600f0049fae9fdbd614952d26c20755ce6bcc8327d58a0b74ddb1cfa36. 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/QZGCD1801246.
Ngọc Lan 1 - Như em đã yêu anh (Hollywood Night)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf562ecab36df9858f230b1e32bb5a77197c377b9df0fea95d071e0a75ae04b19. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/VNA0F1705122.
Ngọc Lan 2 - Mặt trời bên kia mùa hạ (Hollywood Night)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5840fdcef4aab08a2a38e67e5f3e1ab1cc199c5635c811d38400ee1af385c6. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/VNA0F1709474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12919faae1f8251e6d973bee561fa94090bc4370058bbf1f998c02ed5f1927a7. 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/VNA0F1704998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cce8ca51e81c0d659b049823549aa3afd0b5c2d73e6b0b54f7932711bd358cd. 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/VNA0F1705003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f22202aa7059da30a821ea56c17a324fe44306c3a5f742a92066a56e352bded. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USJ3V1105373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1155eaef5c131fb851a8c1cd8d0b8e57b803ca119d78e2f872a8ca7994ffdae9. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:45Z), 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/VNA0F1704929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6691015cb4af1f862b37b58e7d108fdd8f77d8a46ad25538c41fdd361570baa4. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:22:10Z), 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/VNA0F1704933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06b524b3292c13dc0b1176c00e6182c7b37ee1e4e52e2d7bd35451ae230ac8d. 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/VNA0F1704937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2559d7bb7fbe9a97fab0f599160c2afdf75a85be478f681f79729c941579b5d1. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:35:15Z), 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/VNA0F1704940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e723ee663ea2d64d7382aa02127bca413579eb83306191e7cebdfa7f4bbb67c. 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/QM9SX1503918.
Tiếng hát Ngọc Lan 2 - Lamour (Tình ta) (Vol.2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16035cfe5cdf4f75de73191c39e338bbcb1c82fc16216f5013e68598122f4cd. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:18Z), 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/VNA0F1704942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497ea41dda83165d34541fa2e4d3cb04924f1d1257348744cce141c11eb7afe2. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/VNA0F1741083.
Chân Trời Tím (Tình Khúc Trần Thiện Thanh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa26cecce0e9e8c7f7de8522abebdf80306b296108eed81776fbb8341b8640fe. 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/USJ3V1159285.
Tiếng hát Ngọc Lan 1 - Người yêu dấu (Vol.1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d09ffed588e2337dbf861cd948179b94ddbea6078528525563208dc21855e8. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:31:49Z), 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/VNA0F1708001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc43e10f828ac2dd5f5946666219faafc342176d52738fbaf3cdc0e3a930bcaa. 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/USJ3V1159185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2659862182e7c896086e29c1d46808ced669bd1e25537c479d6522efbb59280b. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USJ3V1159186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c252f903b43646c89779f70a9e8f7050731461aa23e22bf82428850c339a795. 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/USJ3V1159189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831981e591d5dc634a63a7870f8c83630eb388ae0d7f7678cd6fb98a6f1056a0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USJ3V1159190.
Ngọc Lan - Elvis Phương - Kiều Nga - Tình nhớ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532cb527138067e1d35bf84b7066d826e207359ef974142ab29bb3d743c2be14. Chain 2 (Bitcoin): anchored in block 957895 (2026-07-13T18:41:29Z), 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/VNA0F1708183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43c9dc3bac3f679063635e891e4efb82156853840003e4e4b0e945ba7413022. 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/VNA0F1708185.
Ngọc Lan - Vũ Khanh - Kiều Nga - Ru ta ngậm ngùi
Ngọc Lan - Hát cho quê hương Việt Nam (Trịnh Công Sơn Vol.2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddac4f3e427b21a95a60e79c7ee45ee05a70cd93c8da48d4e4bc1f3019061c2. 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/VNA0F1709198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26077bced03fa5de9a0e52e7711903e22f160853d17600523aaf4296cffe6f0. 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/VNA0F1709199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ef4c9c5891383a87972c479479514a1be9b895c0132efd773c99cfb6a95838. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:10:23Z), 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/VNA0F1709200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c9a2dc6b2b38f1f7c00bee40dc10abc0657fd67b706e541ef38bc232651e27. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:08:49Z), 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/VNA0F1709201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059d3ae2d0be22c0d72f859345ad6b4a940f97c95a194cba628c9092f771e7ef. 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/VNA0F1709203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c67943122b82df9f91d1969e815747a30593d7f99409f86ce461990f40d95ba. 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/VNA0F1709207.
Ngọc Lan - Vũ Khanh - Kiều Nga - Bao giờ biết tương tư
Con đường tình ta đi Vol.2 - Don Hồ - Ngọc Lan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f0d82aa410c6fcc121a4ef27e292391efa176730401cab24ef56d6048901d4. 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/VNA0F1709463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe58d192d4252402a67f88cf8d998459b2bdf5de458ba9b010244c8be543a8bd. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/VNA0F1709464.
Ngọc Lan - Elvis Phương - Kiều Nga - Người đi qua đời tôi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab86700ce4bb78d01ec767337eae6f14d182ec06bb20a58f65e181c3125694f. 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/VNA0F1704885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9984bca8082ba9846a8d287915073e3d3d69c71ff55f7d7a08705e9d4ca9cc96. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/VNA0F1704888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b36a930dbe4f584e5f73fe63ee6269c1e1544b0161ecfd5ef4de6f7eb0f88f7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/VNA0F1704955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985962e9493d9ff96c23eb7b210127de530a44367c301246d28d09884c56f652. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/VNA0F1704962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dce9207f645b8e8b54ad85562eab87023846a1c0a9787d732b189eeca4c78e. 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/VNA0F1704865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063e3b3b2bdb713c0aba3d178732a73fb044126a3d5d50926d3d7636c8b0ac5b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/VNA0F1704866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc306eab6671e1e76d6575e061e61f3c2ca885f565232a37e53af0e0e25612876. 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/VNA0F1704867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1297e5b6d79502b181e7be0b595f3bf14b401f76f367ef13bc52fdf8b109a28f. 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/VNA0F1704876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd592110d1133aa997530b385af098c644c453c9f969432254672133bf460164. 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/VNA0F1704899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8061eab2f90668d6a930b14e1cb6eaf409468fb41210140849839250803c25. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:41:18Z), 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/QM9SX2203100.
Bên đời hiu quạnh - Ngọc Lan - Đức Huy - Kiều Nga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007eefdfa74e78e1391af0711568d1ebf2d8c78af36f435399797b3e030ec98a. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:24:46Z), 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/VNA0F1780499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e9040e8c1976c6f6ef3a524fe8861daa26340243dcab73e2c8b41482e7eda4. 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/VNA0F1704980.
Ngoc Lan - 46 Bai Tinh Ca Hay Nhat _ CD2
Ngoc Lan - 46 Bai Tinh Ca Hay Nhat _ CD1
Ngoc Lan - 46 Bai Tinh Ca Hay Nhat _ CD3
Ngoc Lan - 46 Bai Tinh Ca Hay Nhat _ CD4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a15ddfa27412c11249014210faa8a32077e9a2245c8957f529a11936672bd8d. 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/QZGCD1802672.
Con đường tôi về - Ngọc Lan như là kỷ niệm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3752c438cb8ca7d486a64cb4249c8ebb14e4afbbf65475f4e0461ba201e98e05. 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/VNA0F1741219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8179b12fe21eb1d5f38a794cf5080ad395a102bdcdfd8bee88e4af26104b1390. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/VNA0F1741235.
Ngoc Lan 1982-1991 - Special Collection 3
Ngoc Lan 1982-1991 - Special Collection 2
Tình Ca Nhạc Trẻ 1 - Vũ Xuân Hùng 60'-70' - Anh Thì Không (Toi Jamais)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2a901dbbd9eda98e1c71f25b3dbef6d25aa808b6ca955882c21dcc04cf4687. 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/QM9SX2401133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705a50a30dd90c9c16da1e88ff481a70bbefa7de3f1636eb4058239fc881ce0e. 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/VNA0F2411619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9166e3a93c389f0bf603e7a3e53f0197794ce9a40e27bac61f15adf0c791e3b7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USJ3V1230069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae88c3e9bd0d533e2ea9dca44b43d782f1c3aae779b0a8806166bc7a4b51ace. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USJ3V1230067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8ad32510fafd46cf3cf56065b1325682ee4b5733f6be2b9f7462373035c006. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QM9SX2301164.
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 0xf0de5ac2aba0f8b51753b5cacbb3dcf2872a2b64c11f72e0b583e0fe2a1bf6f8. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZGCD1803383.