Tsar Teh-Yun (; 26 November 1905 – 10 June 2007) was a Chinese musician and poet who was among the leading guqin players of her time. Life and career Tsar Teh-Yun was born on 26 November 1905 in Shua
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 0x80d8c3069e86597dc72c73af857ebcec6090c00c6db7f16eda238565bb236f96. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ffffd4cd-42c9-4c04-884b-73c1b786b470.json and https://artists.proofprofile.net/proofs/artist/ffffd4cd-42c9-4c04-884b-73c1b786b470.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chine: L'art du guqin (China: Guqin Art)
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 0xc9004363ed83a777e670ba37848a02fdd6b31254b8264c866cec7b17ebc6d869. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH1398043201.
Le chant de loyauté (Song of Steadfast Loyalty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fdb6ee99a29eec934298285896a2811de145a37c557e2cb1016d8a46c680ed. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH1398043202.
Elégie pour les anciens (Lamenting the Past)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1fa5574adfe693499b49dc9648715784ceb92a9b5d6162c1528c579596323d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH1396643303.
Les oies sauvages se posent sur la grève (I) (Wild Geese Landing on Sand (I))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a81eaca1fadabc1eb6d5ad161f1eca7f0e722831c32307d494fd0a987dd51d. 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/CH1398043204.
La lune brille sur la passe (Moon Over the Mountain Pass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a9c9d839736b588b0011d5f7f80ccefb9486781150d7efda1b402eecdbf2b0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH1396643304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a7e34e9e1168b399c956836badb6539d9aeb2a765cc50449c8648f3a1dc491. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH1398043206.
Une agréable soirée (Tune for a Pleasant Evening)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1300941bb5e1f57efc53f8fed39f809bfb73731f7375a28354d956f15d93b0a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH1396643306.
L’incantation du moine Pu’an (Incantation of the Buddhist Priest Pu’an)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5bd09778548b6ac9235404b5c4ae05eee26dee65fe9f6a4520d6fc2062f004. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH1398043207.
L’adieu à Yangguan (Parting at Yangguan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655946e5ec89c65189bdacc7c0e22d3feb02ea3633e11d3a6fbf620a304be5e6. 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/CH1396643308.
Trois variations sur les fleurs de pruniers (Three Variations on the Tune ‘Plum Blossom’)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0530bdc4ce361e32d5b5f40e90d579c6546e39fca6b6ed4813a80dc01403c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH1398043208.
Les feuilles du parasol chinois dansent dans le vent d’automne (Parasol Leaves Dancing in the Autumnal Breeze)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c94e39eb8d18f2c4c3edb9e8dee1449b568f80a6f8fa0e426269258e9818a06. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH1398043209.
Dialogue du pêcheur et du bûcheron (I) (Dialogue between a Fisherman and a Woodcutter (I))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdc140ae5c408a27ea3d4b0130e781f3d0a6de741e0242240312b7553e7b658. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH1396643313.
Illustration du doigté (Illustration of finger technique)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5998146cf794a77650f48801ad79989fe3406f9e67b672c99c89691be02adc3c. 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/CH1396643301.
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
Nuages sur l’eau des rivières Xiao et Xiang (Water and Mists of the Rivers Xiao and Xiang)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4489525b562ae6d0d68c2cde4890cee744c2f2be1eb441eda08bd3a08e1a90. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CH1398043203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c55970141c9c4370a5e482f77129d482ddf7494a13b3756d208a10408be1cb. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CH1398043205.
Tristesse sur la rivière Xiang (Lament by the River Xiang)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d8c0f21933f27f28a78e22cae2b96710a59b069287eee5522dc048038c0507. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CH1396643305.
Lamentation au palais de Changmen (Sorrow in Changmen Palace)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fb77bc3a839fb21d4084cdc4f41e70bc5adcdbcb0a7e79230d6bf9ccede62d. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/CH1396643309.
En pensant à un ami (Thinking of an Old Friend)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c8168afcd844ea98f1a82575b43411547160c7c7c627bc2a90e19f4fb26c2b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CH1396643310.
Les oies sauvages se posent sur la grève (II) ( Wild Geese Landing on Sand (II))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf30e6c6d18557c1d30abb0a8c05d635ce7c55452b3cde3c80cae22573768eb9. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CH1398043210.
Le sifflet barbare en dix-huit sections (Eighteen Variations on the Tune ‘Barbarian Horn’)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1257a0d1f3c50287918d730b7032951c58b1bbc33904c8f5e35a3ee3e6b0123. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CH1398043211.
Chant d’automne à la frontière (Autumn Song at the Border)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2995f3fd9aae7fcb50176cc0ae9a96ba5f12a256885d8d4d0a52f6374ad8f8b0. 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/CH1396643315.
Les oies sauvages se posent sur la grève (III) (Wild Geese Landing on Sand (III))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bd80ce28e437a780e79218fed622725f273c4b00cd7289b2a9713bcbaa49e1. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CH1396643316.
Treasures Of Chinese Instrumental Music: Guqin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b124df67a577bd9fc6723d0813ba815fee9993d8c8a777c006b430b8ad9e5d4. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USDO11200720.
The Mist And Clouds Over Xiao-Xiang Rivers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9557fc01f9e097d4b6a525915c3b14efcc9260d8e92e841376521715881939ce. 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/USDO11200730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5bd53d48fdf6eec3e587502f333b594b1565e25db49a14fa881839e0063dd1. 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/USDO11200830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa5f8fe08b300d105a9975c333fdf20468d4a552afe7baa27a2364f0ee9ed1f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USDO11200840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60e63b1aec5c30e47d666ae50d0eca326621d23cc230c842ea2845b99eaf2e8. 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/USDO11200760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba11a8599863015f9c9c9821df5a1a5a5a2b8c64291363db91f20c10bd749cc0. 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/USDO11200770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92305a1fc4d1aaf184aa8be1764c7e965a40e679b403c546471218dce8af7974. 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/USDO11200880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d195523a8f288191899b80c1ecc072a3e666267c865f9be21c81ddf3dffd8e4. 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/USDO11200800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8980c1a42b774b7291a2c6006c6509e33e6ed954794598621bcb0974117ea983. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USDO11200900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6c0b98ff6c347e741581259bdcfd409f4ec5d626484a9f15aff9640b1f4c83. 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/USDO11200810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd5a44b15dafe60b624c15994f3bd22b9d3a92350c90839bf825296df1f3420. 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/USDO11200910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd434b717d92ebf5493305d781be9f5662a2211674af87bec85bb490cc1eff06a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USDO11200870.
Eleven Centuries of Chinese Classical Music