Sebastián Durón (19 April (baptized) 1660 – 3 August 1716) French National Library was a Spanish organist and composer of the Baroque period.Grove G. Sadie S. The New Grove dictionary of music and mus
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 0x05f9a26a66b108acd62d71f7f5ae40f9af891da491da83c32475617b9f7495c4. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/870a1a02-966e-417e-936e-6418194df4f9.json and https://artists.proofprofile.net/proofs/artist/870a1a02-966e-417e-936e-6418194df4f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Medea - Invocation "Nunc iam cessit pontus et omnis partitur"
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 0x877c51c28b66216f4bbe6f9e0df0214d8e3b090bae93645e4d141e975e871450. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA371618015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868c3eaf89137ca78e74513ec3381ef6da87882a102d1e7424e33d7f670b9b5c. 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/USA371618016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb51ac89353398d05c2e7597e9758aef242c95e0c219fb2f38517dfa01f2b37. 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/USA371618022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673c8c7a798258b92bb6fe0f558207f8ba63dac9b51dae433ecb30df52abda56. 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/USA371618023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447174f69ebf65a975f0ec22fc9a669dae0ec9d5cbd688c3c79ad01f36c0b79d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA371618024.
Solo Humano: "Sosieguen Descansen" (De la Zarzuela "Salir el Amor del Mundo")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d93935c8073ddc3b05f3363c2a90c02e1a10cd1b6fdff0cd1312f5da4b3528e. 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/USA371618028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ddc58a11cc635dd5fe26124659ee9af78e37a6eb1641c65425ce32584f2b70. 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/USA371618030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16c16b7078002c63e46b59958a0b5049c17f5027869183ecbc890202d2b7f3f. 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/USA371618031.
Romance: "Por Que Llorax Blanca Niña" (Sarajevo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692beecf95872adacfd92f4f4cf76f0c504da538e4e9f0d1b6ed79ee0e5793c1. 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/USA371618034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0d52d4e5cf7090d22dc5913363cd1535b3740149b57e517139f04282ccb7ab. 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/USA371618035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2e8c2acc3432e5505a60e64018fa3f9fa11cbac50e5775f753842c18cabaf4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA371618036.
Canzonetta: "Si dolce è il tormento" (Libro nono)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc409e8c38a0bd8882e30a08df8c3113bcc19ab7f0ce6ca1e7f8c8d17d8ed826d. 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/USA371618043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe58dfa17c373cf3511f034981e0593bbbab06472e025f87aa8f62e643200ec8. 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/USA371618050.
Celebremos el Niño: Christmas Delights from the Mexican Baroque
Organo de la Catedral del Salvador "la Seo", Zaragoza, 14690
El imposible mayor en amor le vence amor: Y, pues consentir no debo (Recitado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb88f74840663749171fb5c263c8e56dad57909dde26b01825ec01f1171a2fb. 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/DEE471900003.
El imposible mayor en amor le vence amor: Yo hermosísima Ninfa (Aria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d59e12299e908cd5bbda56007500078718b7bc9635b921a706b32b7bbed345. 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/DEE471900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479ab097f1c01b0fe31bab37652ec8e583ea16d3f5aa7aa329bedd1a32a6df3c. 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/DEE471900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cd966f309811f16efe9538984ec4d1d1cce0b9c9b10602ed1156ea26267fd5. 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/DEE471900012.
Amor aumenta el valor: Adiós, prenda de mi amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31947867386cff518ad351c53b149f67e0717def317b3c5fd806de773d3dacbc. 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/DEE471900014.
Música para tecla en tiempos de José de Nebra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4381d1e1379430abd83cea84c001d7d93892556434710dc07e84ff5b14b8d1. 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/ES7891902001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92d3f569756566f9414e51b6f42e379959971d4eb4c5e8c63ba7bdf887e93d0. 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/ES7899800101.
Archivo de Guatemala: Music from the Guatemala City Cathedral Archive
Sonata da camera á 3 in G Major, Op. 2 No. 12 "Ciacona"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5dfa51aa912cb62fdb77a7fceec021a86781df91ac37309c50224d1803f1e2. 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/HKI192032909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a58289848c53cd46775a0b367ffe37103c69339ebdabf4e295c607b37f4c36f. 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/HKI192032913.
Historical Organs of the Philippines, Vol. 1: Bohol (Loay, Loboc, Baclayon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4200d40ec5e78f5bab4cb3d0e8980dcd0a19303968292f7581206999916fe3. 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/ESA092396138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984dbd2a139f71cb9294fd8d09789ba3ca249ae922f030165c19f43e794e015b. 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/ESA092396139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f0bcb542ee1e48b4470e3142a7e888811beebfa0bad9ad860fa0617ff2c834. 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/ESA092396140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43635a3f9f244a69fc2dc2cb04905d89990f59f33c905a1eeced22b483465a7. 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/ESA092396143.
Orgues du Mexique, Vol. 3: Orgues de la cathédrale de Mexico (Orgue de l'épitre)
De la musique des conquistadores au livre d'orgue des indiens Chiquitos
Music in the Time of Velázquez: Songs & Instrumental Pieces from 17th-Century Spain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12418fa7dd0cbbb7aba5e5f913451ed06dca171126a5248be8f4131170accd1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES7899300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070e908e4f9e57693ca9b0a2e87837ba064c81a31ee6ee82508f627b5e165d59. 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/ES7899300108.
Vea yo los ojos bellos, Music from the Time of Cervantes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcaef12242ffd094c4a7c7da2d365bd5057c4c2c1107e9ebdb14b0a948fa2e4. 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/NLY331700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27cef078764b42b7662b460bd5929b0819ad0588b74a4b451c6a5a2f78f11b0. 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/CH4210800532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5670b3b299ba882fdaeb7a40b1372f4f540e0e9cd1f6952eda2c9fb40455842d. 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/CH4210800535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fc0256ae56788c06c2664b810133fe2c03ca0b5afe4783390e320ba730710c. 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/CH4210800536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589b4a0d8aa4ec49726805e5d783e25a137450f121186f1b89e205c52779d826. 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/CH4210800538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2690945d6bb997bf95e59fb4145b8ae1655363bf270127529ce5a6e93fa6c5b8. 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/CH4210800539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71dc158a4414471b40f134479afb9cfd67ca452310803d3fd8d11b00143f194. 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/CH4210800541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40b17747b39c4e5e1ddf4ca9191d6b51890dc12f832c95c6195c255a3758217. 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/CH4210800542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4516c20bd1255810e1ae68831f8b349a3a2fe8135b0e4a35ec1a91e9057e5b. 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/CH4210800547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e1c6d7fac91b4adcdcd034ddb003d254dc205c7e5062effad734f5577fda59. 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/CH4210800549.
Las nuevas armas de amor: Quantos teméis al rigor
Salir el amor del mundo: Sosieguen, descansen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94e7f4cd3c5b523edf073a72a9d3cc818ff226fc78badc98bbf8708504d63ce. 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/ES8301124805.
Avecillas Sonoras, Villancios from 18th century Latin America
El Órgano Histórico Español, Vol. 5 (La Escuela de Zaragoza II)
Devoción, fiesta y chanza, villancicos en la Nueva España
¡Viva Frida! (Music of 17th Century Mexico)