Luis de Milán (also known as Lluís del Milà or Luys Milán) (c. 1500 – c. 1561) was a Spanish Renaissance composer, vihuelist, and writer on music. He was the first composer in history to publish music
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 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 0x79d67127ec13849ad58ec59632bd493457960f07e9b07fd5179bb3165ea49bfa. 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/00f1468d-8ca5-4ad2-8a2a-652c544154c8.json and https://artists.proofprofile.net/proofs/artist/00f1468d-8ca5-4ad2-8a2a-652c544154c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Libro de Música de Vihuela de Mano "El Maestro": Pavana No. 1
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 0xe0b8da837c1c4dfe15a63ac1648e22efbedfc4c328b7df84cd049a3c74adc208. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/HKI191428923.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daed0031f6cfd3b23a2d06faaa4c0c586730c8e4be47d2da1e7db90f7cf6ad3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/HKI191428901.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8e21c7ac69a5a35316ceeb70d6e4ac6bb4a2689780a326bfa90a6add82baf3. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/HKI191428902.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0212375c68760951b3ffd220427ae4c31dc5f776c30a3ac3759db5d8a1b7a2e. 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/HKI191428903.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e439b65f2d156e2353a91223b72fd629126c8117eeef4a03b6a01937007dc1. 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/HKI191428904.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9b28ed6cb031c66ba979ffaf18c719f5cb27790ab9baa2ffb674add5e91e14. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/HKI191428905.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43d7fb94058b6d5c80dc34631cc6ef08835cf4a7cf8d60d7d7f1e56696d1aa9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HKI191428906.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852b107202ac07156726d843ccb5eb5542190167bff1cbf67be614fbd2e8c522. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HKI191428907.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079b0caef5fa11d8a8d8f509c8bd423fc587adf8185283a5a18e2fc9914701ed. 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/HKI191428908.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa700d3317b8e0b8c8c63d3aeb80505791497b14972440755e4bc5e936b8f614. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/HKI191428909.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82431d737b026d909b629ed503a4ef1395795c0cd5a5f0ab3e8cd274488f9f0e. 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/HKI191428910.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b93437ed8f1e6e76b468028663fdc1920bef1b6d8df117da5d221bd7b89d13. 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/HKI191428911.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8625352f7765d5ec515869e491424166e0af1bfc4d6e18499ed874642c8c0b33. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HKI191428912.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 13
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f70aa0dc30ad0cb31e36ba7a9953e17ebb690364307f10deacc13ea5a4cd69. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/HKI191428913.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73087b5148a31121cba00a94eb28d948439c2528b43e6589b3cb83e9a9225ab3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HKI191428914.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98ebbd287b0d3b6a30e5c06b2d8fec6e6a6bd9cf7a20de37ccb343040627414. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/HKI191428915.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 16
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb153db0a0fa6dfc406ab762ecb16c60e903fc762bfef3967b66f97c2797d49fe. 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/HKI191428916.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 17
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a28db86e878de5ad26e3e4ea683da3c4e279075606655cc2cf43b212e9923d. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/HKI191428917.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 18
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9c7b7c817dadf06012841be3fc1309652626d6f2e576bed0235a362c466ae6. 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/HKI191428918.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 19
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b17553622b027fc8d6dd4166e99e2d242e95e2d0621df33e03a713b7676b61. 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/HKI191428919.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 20
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5fd2e3b510ff344dfce642ef68017e647c2210611e1f8067eaeb2ccb7de1b0. 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/HKI191428920.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 21
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2bcc6b0d88ee8f5e88f0900dbb125499c126e31b15159b31d938ce4d4895de. 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/HKI191428921.
Libro de musica de vihuela de mano intitulado El maestro: Fantasia No. 22
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb381fd391b836782bcfcd204cc1cb39053cfd0ab71f2261f2df3295cffa368a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/HKI191428922.
Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b8da837c1c4dfe15a63ac1648e22efbedfc4c328b7df84cd049a3c74adc208. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/HKI191428923.
Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3339b19e1faa1d9fb5ddf507630e4f0e85f623d641c0d5de4121c7f6d0b806. 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/HKI191428924.
Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7346f68d4515fc0da97e29b221c885ef65b3eb543824af19ca34bfdfe5deec. 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/HKI191428925.
Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ed0036a4d1d834f4f5c3f94b72a46cde675ea7ee3dfdfbe9d1a1226e976e26. 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/HKI191428926.
Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2360cda09ffefdfc350d4f9b66611767f4fcb4b7a93c41569a08eaac341854. 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/HKI191428927.
Libro de musica de vihuela de mano intitulado El maestro: Pavana No. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15efbea7223dbf35f9d090f3cd5261cbf06d0163b254eb9ee72d7577da005429. 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/HKI191428928.
Fantasía No. 10 de Consonancias y Redobles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353d822a80e203989631e516d768db0d9059bf261e26f4ea10558c1e6922669a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM6P42478417.
Guitar Exam Pieces from 2019, ABRSM Grade 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057ef46116b94fa07a2e93bd223083beda65206de1a9941c6e1eca5313c0a43d. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBEYQ1864006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1932fa66c69c7ec6a59233b5b54870fbb2a96b328a5ee0174b6df6bf5eab2614. 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/DEA349102017.
The Da Vinci Collection: Music of the Renaissance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb8b270d7d896cbae1eed5efd263ae067c73f634efe4af8b8046b2807c3785a. 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/GBAYD7200072.
Libro de Música de Vihuela de Mano: Tonos 7 y 8. Pavana IV
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05c25070db3b29f237ec72bcc0818b91db8c1ac0d6823b822ee2ce9721d599c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR10S1720050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42996440bdc66f8543000e42ae4dcdc1477d8be6fb28cddfd095d3164babc9f. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USKC60711662.
Libro de Música de Vihuela de Mano: Tonos I y II. Fantasía XIII - First Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944fd8d567580bdad97682689087de92e72e29640cb03082bd23a32ba7f913e9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FR10S1720038.
Libro de Música de Vihuela de Mano: Tonos I y II. Pavana I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb46c6dc4b9af9b24ed8ffc78aef26664d570c3678934fd982775936b4cce352. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FR10S1720039.
Libro de Música de Vihuela de Mano: Tonos I y II. Fantasía XIII - Second Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c03b4aabbea1c844c4c4e07fe70b90c98f59fbf69a784d2d49c1e74be6ab400. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR10S1720041.
Libro de Música de Vihuela de Mano: Tonos 3 y 4. Fantasía XII
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7e4860149d80f70c6fad29212608ae7d124c508db2b55c3edf454441de994d. 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/FR10S1720043.
Libro de Música de Vihuela de Mano: Tonos 3 y 4. Tento II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e54d5df24dc90bb9b286b89aa44eb908082c38d586d3017b25d003424a8c6f2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FR10S1720045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b8da837c1c4dfe15a63ac1648e22efbedfc4c328b7df84cd049a3c74adc208. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HKI191428923.
Touchstones - The Evolution of Fingerstyle Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868250b9141cfbf9792dbd3d04bdfb8130307489a993014ac23f353b075724e5. 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/QZ3NP1800027.