Liu Fang 1974) is a Chinese–Canadian musician who is one of the most prominent pipa players in the world. Described in the media as the "empress of pipa" (L'actualité), "divine mediator" (World),
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 0x7026ffc0a3d328b80454357c5b23443bddd31503a73527409622366eefc9cb57. 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/906cf3f6-3cfe-40b4-9e03-7e148f289ee2.json and https://artists.proofprofile.net/proofs/artist/906cf3f6-3cfe-40b4-9e03-7e148f289ee2.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 0x9364c1f7030a8a31dfdbce44749f91b439690bab7a3f691b010951ab31ddac86. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:17:34Z), 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/USA560526895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe439c41fc8e867d101398cdcfa641da91a744f5f3e7155ceabd5d4442696ab55. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USA560526896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77422d4cf57b61c6114f3899e6247b7388850deabde11aca6e4de2e304ae9205. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA560526898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0067637fa61da4dd92e7a959011b70aad071ff9ea30ff0c4706047cf87256ab. 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/USA560526899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde6fbbd409e09aca002371567b3866555d42c383bb233157c1480453c8def57. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USA560526900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c360716c2c0e1cf79f8dab3095f2b168d2c97368471429cdd369168640f6be7. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USA560526901.
The Soul of Pipa (1) - Chinese Traditional Music
The Soul Of Pipa (1) - Chinese Pipa Music From The Classical Tradition
The Soul of Pipa (2) - Chinese Traditional Music
The Soul Of Pipa (2) - Chinese Classical Pipa Music: From The Ancient To The Recent
Emerging Lotus - Chinese Traditional Guzheng Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4690a0ca8649036c2ce60e240a49ade1741ac87ae6ba8d9542dd7a0f912f5f99. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/USJ3V1402750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2439a7c8581010632fbb52b0ebf55be48a28217b39554781478fed4ee3303b1. 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/USJ3V1402746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585b1d226a868e409b179b1af5a4508f674ba04fe644f6eff77d57706ccbe3bb. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:40:57Z), 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/USJ3V1402745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220f5599fbd8fcfb967d017d236c225967b0cc6292adb3f5bc072d25c39092c0. 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/USJ3V1402743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4784ba1315fb8f0c7e4e5f5933aca095e67499b6e873e831bb3fe87a8c93b912. 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/USJ3V1402742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c9f519b72acd66611cfa7a372a1e9eadc4d8df99d0caa34f72f08425808bb9. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USJ3V1402741.
The Soul Of Pipa (3) - Pipa Music From Chinese Folk Roots
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843b9de905cb28cfcf416abe3622ca60a33442b6094a6ead5dbd90018ce5105e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USJ3V0643104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe06fa3b16bca9909aae52ae3593774c241f8f0dc40ef7a923fd639fdfb2fd8. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:46:36Z), 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/USJ3V0643105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ed4f6978ed2c03b8140de73f692c6e28c36a83129db12ec6161f55bb97695b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USJ3V0643111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e0b24c2beea62d1fabb9f272d91f3d1abb0a33985939df04a0915df5ab19a5. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FRV960600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9267ec08fc43af6c7fea8b3604ebba942566112fe472cae1e6473408de1f273. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRV960600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2529aa7c36cc8234241d729d26e1ebd69af4ac1072e149c89e0e92b4f209faa0. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:00:16Z), 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/FRV960600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf49a94d2dfff491bfcd28c82152c17eb55646335846a8eef58e9b513f846d03. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FRV960600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0034591e19b14ed67796eaa022c5d253daea5b8ad7291cba5a132878912c89a. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/FRV960600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6957460cc295a4f18955a2cbf85805d2f46494429645218d78463d28321cebc8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRV960600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2d6b2072ef8318ac8d72365cfe79c90a538bb7bd374615f2003e15abe14fed. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRV960600020.
Lune d'automne sur le palais de l'empereur des Han
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0d627c3ecb274acb6ff3f601c648b68857e46f2c2793336704e2a5bba7d45d. 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/FRV960600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605877f60d08ffdb1c7d064de5272a5493c4586cf2046d26eee414ab4080c4b4. 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/FRV960600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768a12f41242e43dfb5a8afc261e31141733d069862f3962bab546fda686dbc0. 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/CAF422101009.