Quang Lê (born 24 January 1979) is one of the highest-selling Vietnamese-American recording artists, renowned for his unique covers of many traditional Vietnamese songs created and written before, dur
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 0x04bb9b2e83d7f29808ecd18b8814d69fa0f634afa0c2e3513b2708a717a37f73. 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/a1e2cffd-1770-4647-ac96-dfb7ccbcd3e3.json and https://artists.proofprofile.net/proofs/artist/a1e2cffd-1770-4647-ac96-dfb7ccbcd3e3.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 0xaead8b5da6671bf2e0f4f5b15eb85f8a82bb59339efe3957f189a289d4adf3c4. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QM4TW2085550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2321392055aa551fd958c5f1f8cabb7e0f7e0cc0d5508fa29b27102a67246069. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:25:08Z), 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/QM48F0330903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3192ddee52aa0c6642cf2e8fc9656f3045684f55814595026a11383cae887c. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:00:17Z), 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/QM48F0330904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e31854968d28982a26f54a6d4198312447a0403ab9059505bbcc3e3eddc18d5. 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/QM4TW2085551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0377f3daae0507a7ef22be844c17960a8ce1772594b8ed49a06cc8a9c3e0172. 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/QM48F0330908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be009f8ae8c9d63e35ec7cd72d4a2e5850a7b070a7ce4ada2a3096a63d418d0. 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/QM4TW2091544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b18d19e44bbfdccee0f2334a030fc3d0a851fb2510f9294ec9af6270c399342. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/QM4TW2091545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bb27c98e595576729bb8c10d7de308a095df81ffee41f66156caeafae9a90b. 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/QM48F0741101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe191ff167d11935d47c5a1f4a534c44068f74a9d5ea821b1d4d540200b4a94a2. 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/QM48F0741104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38d686a0e335bceb4aa0c22ce687162d889fbde3582d77333371517eed0ff7a. 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/QM48F0741105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bfcaf93d287f858591ab27e12fe115351e99050b0348c021206c782bd872c0. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:49:38Z), 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/QM48F0741109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb047b7d13384f865f2192bfe3c0d4de89a03ba1a65c068d941e54234454f8da8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:47:09Z), 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/QM48F0741111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075da8264c50524c2bfddd6afecc9b98b4bb94901a4c6b759b70115c12c57e8c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:33:04Z), 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/QM48F0841801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffbbcad58f6c7952cbabfb5dc2cd1126a299027460084791549e5e905f7a6ac. 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/QM48F0841803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d93c29ba862a56d3f80fb663c47bfd2797e26aa2a9abfd760bca37ebcb4850. 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/QM48F0841806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d507d4942fb0564ed7f322ec8addaab491bf80bcbc43a92599f710f23e8658. 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/QM48F0841808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0666b657f9a433915e70817fe8a184b277ce65c3d5be9c1cb4295e537bf313. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QM48F0841811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8125a2d2c5b9c8e346b8e6bb858e3a271275bbc4d3667159e36156ebd45cf3. 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/QM48F0841813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae9bb02cc289ddd13021353de4c9d52e7d06dbde4a809d777ac44c9afdb5451. 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/QM48F0944604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2a3dcb82782e7153e947341ca605dd24adfc2269b2b2799f3879e006a18f98. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QM48F0944606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b41bcbc173ada2f6b21bc173d6ede35ceaedf6fb0eabfb9fb8dd8fdeeef19d. 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/QM48F0944608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eae52bc3ff2c889fd646a3eda3815e2a981ebe55ba867609112b9e1dcd81e55. 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/QM48F0944610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adfef8b2c088fa2d0a983fe25ba3d70b6e077717084590058f0b19a4b143485. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:55:43Z), 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/QM48F0944611.
LK Nhớ Nhau Hoài - Cho Người Vào Cuộc Chiến
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b24b797321740a6912e5f8fb55f20c69ba04f95189c1bcdbc18aa37997155e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMBZ91913871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be7c92ca2162a1a785b20f9b79959231c8d362aedff5dd144067da06e04521d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:01:44Z), 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/QMBZ91913874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cb3de33417e28fa80e8c6782a6a35f78178c1a715728cba5948bea4b6a8fa8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QMBZ91913875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd510ce726dee2eac6bba0115c7c34b931e8d9cb460b4fe457117078de590fa. 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/QMBZ91911663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ff87d5b3a4b1f6f51ac00fbd1f9a9439e4d5af481cb9b47b092856dfed38d1. 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/QM48F1860608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44bbaf812dcba207349a47fcb98f5d462aea37fcb3224dea744d6ed3e67364e. 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/QM48F1048010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5441f5c73b89c059c53ae0ad814d67805fe7e59f2e15e5d00c9d65ef94283eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMBZ91911754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abf2b3743fce73879aee5c1b753bda9a83181c44d1ccc122619c1515a153237. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QM48F0842401.
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 0x7955c25c690c6dce16bc79b8bd71aad7a91589d5e7e95e27c9859ef63ef626c3. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QM48F1048102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde02cd43df2ec102803462b9ca738884944eda0344d004ac7fd53c97d40189ca. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/QM48F0740007.