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 0x6a627f1072d86e8b3bfcb422c3af161e519d255104844ab1b342f70bb8bb4a36. 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/88c55c25-b8ff-4845-a5a3-ae4bde9d1f51.json and https://artists.proofprofile.net/proofs/artist/88c55c25-b8ff-4845-a5a3-ae4bde9d1f51.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Vida Breve, G. 35, Act I, First Tableau, Scene II: Abuela, ¡no viene! (Salud)
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 0x7c75c5344b21e04c0e9af35923f7f6e4cf84ca2fc25abdee184e7593c5d2daff. 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/GBLWD1900902.
La Vida Breve, G. 35, Act I, First Tableau, Scene III: ¡Ah, ande la tarea (Obreros en la fragua)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b56219268bb1ab5fa834e20583ed7ed6fb39a0cf9bda4d44291f240a2c6763. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBLWD1900903.
La Vida Breve, G. 35, Act I, First Tableau, Scene IV: ¡Salud! (La Abuela)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453b5915be7d84821c49dca439c72695f12d632f6a1d763aa1f2d3e98491a9db. 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/GBLWD1900904.
La Vida Breve, G. 35, Act I, Second Tableau: Intermedio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de65307823d522fbe1fd731c008af64a0323470aa07586a76d96ff3c517f758. 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/GBLWD1900907.
La Vida Breve, G. 35, Act II, First Tableau, Scene I: ¡Olé! ¡Olé ya! (Invitados)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724358ec5f78f15c500626476c9bf70589fbca27ac3e2fa1f523160d1131112c. 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/GBLWD1900908.
La Vida Breve, G. 35, Act II, First Tableau, Scene I : Danza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ef7250ebe21d44969416a5bec58e9bd495a73bf6e0ff2fe1deda6303c49422. 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/GBLWD1900909.
La Vida Breve, G. 35, Act II, First Tableau, Scene III: Intermedio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02a354cdcc1cbe4b73316cbfcd9626069846b9c4ea9c2180d13ced1ae3a077f. 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/GBLWD1900913.
La Vida Breve, G. 35, Act II, Second Tableau: Danza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d44a454a0a258201e8cbd216bb09b8fcd95a1658d9d0de574b1f16b5fb94bc3. 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/GBLWD1900914.
La Vida Breve, G. 35, Act II, Second Tableau, Final Scene: ¡Qué gracia! (Manuel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c411bcc47f01a92829e2d1e25931d234499efc69c0e98750a049be6e8327f97. 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/GBLWD1900916.
La Vida Breve, G. 35, Act I, First Tableau, Scene I: ¡Ah, ande la tarea (Obreros en la fragua)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb903555bc2d94a919bfcaaa4d71f021da22d935d68e8a6b68d10f40ddc7963c0. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBLWD1900901.
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
La Vida Breve, G. 35, Act I, First Tableau, Scene V: ¡Paco! ¡Paco! (Salud)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11988d8f0ba8dd2513f560d0f3a7b46800bdf419ae2acce0ae48a5247e2a533c. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBLWD1900905.
La Vida Breve, G. 35, Act I, First Tableau, Scene VI: ¡Paco! ¡Paco! ¡Siempre juntos! (Salud)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd70a4802d630b19347e4957bd6c12b5ee8b8b5e040c4463d0c9d16fd666e43. 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/GBLWD1900906.
La Vida Breve, G. 35, Act II, First Tableau, Scene II: ¡Alli està! (Salud)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93333a30aa0ab54c9905856144462fbbd364e198c99358d6d671834a591e6696. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBLWD1900910.
La Vida Breve, G. 35, Act II, First Tableau, Scene III: ¿No te dije? (El Tio Sarvaor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e66c52807db3c1f87df99581758eb0a3e4a9104f1e7811e9c12fd137b8bce94. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/GBLWD1900911.
La Vida Breve, G. 35, Act II, First Tableau, Scene III: ¡No Ilores, abuela! (Salud)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043e8858aacf1dd292128d382049cd370bffa4582d1b76982ac57c06b101aef8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBLWD1900912.
La Vida Breve, G. 35, Act II, Second Tableau, Scene I: ¡Carmela mia! (Paco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826dfba5419a07bac696fc28ea9a337d55ce1da66b5175e3512f81782eb09d66. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBLWD1900915.
De Falla: Nights in the Gardens of Spain, The Three-Cornered Hat & Homenajes
El Sombrero de tres picos, Part I: Danza de la Moliera. Fandango
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae31618e80c4f151bc3053902a0a21c6cb3c833addda38f0ec149382a30dee66. 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/GBLWD1200803.
El Sombrero de tres picos, Part II: Danza del Molinero. Farruca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162dd7b29bfb9415c0fd12acf95ac6be9d39123677081c4cb658e8a462bbd55b. 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/GBLWD1200806.
Homenajes: I. Fanfare sobre el nombre de E.F. Arbós
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e71ecfd7170c9ead816f16625efbcc47509b249a84d1604989b8f03fcc15363. 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/GBLWD1200814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8638692b8bb99db79e880298afae58d67e84b84e77eea8f13a74d0ba44a3e3. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBLWD1200801.
El Sombrero de tres picos, Part I: Las uvas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4bc9de292ba73db4e51abd72f7386d98369a16de35efdfa4f909a813dfbd4c. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBLWD1200804.
Rodrigo: Songs and Madrigals (Complete Orchestral Works, Vol. 10)
Mahler: Symphony No. 4 in G Major (Arr. C. Domínguez-Nieto for Chamber Orchestra)
Allegretto - Concierto como un divertimento para violonchelo y orquesta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe48c6e752a5522bb212778ba08f8d59bb490d8a383f131cc52edf7df786c8ec. 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/ESA061877711.
Rodrigo: Retablo De Navidad (Complete Orchestral Works, Vol. 7)