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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d67127ec13849ad58ec59632bd493457960f07e9b07fd5179bb3165ea49bfa. 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/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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b8da837c1c4dfe15a63ac1648e22efbedfc4c328b7df84cd049a3c74adc208. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:11:01Z), 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/HKI191428923.
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. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079b0caef5fa11d8a8d8f509c8bd423fc587adf8185283a5a18e2fc9914701ed. 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/HKI191428908.
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. 20
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5fd2e3b510ff344dfce642ef68017e647c2210611e1f8067eaeb2ccb7de1b0. 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/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 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/HKI191428921.
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 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/HKI191428925.
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 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/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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1932fa66c69c7ec6a59233b5b54870fbb2a96b328a5ee0174b6df6bf5eab2614. 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/DEA349102017.
The Da Vinci Collection: Music of the Renaissance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb8b270d7d896cbae1eed5efd263ae067c73f634efe4af8b8046b2807c3785a. 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/GBAYD7200072.
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 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/FR10S1720043.
Touchstones - The Evolution of Fingerstyle Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868250b9141cfbf9792dbd3d04bdfb8130307489a993014ac23f353b075724e5. 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/QZ3NP1800027.