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 0x293e9aa9716bd65765190b2c48666da84a6200632f8ca73ee6cfd19bbdacdfaa. 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/e8634d9e-1689-450d-ad86-94dc0bb4d114.json and https://artists.proofprofile.net/proofs/artist/e8634d9e-1689-450d-ad86-94dc0bb4d114.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xd2bb0e9206dc8e96400d9f75883a1556d88bc129c11322d2ab93125c4408682a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES59E2210001.
Schumann i els Nens: Robert Schumann i el Cavaller del Bosc
Tchaikovsky i els nens: Tchaikovsky en el petit món de les joguines
Tchaikovsky y Los Niños: Tchaikovsky en el pequeño mundo de los juguetes
Robert Schumann y los niños: Robert Schumann y el caballero del bosque
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892e4602f2a48ab51db0522ec789d47a80ec356dd1664ea920240d231d51e44f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:37:59Z), 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/ES59E2210014.
Historietes de la veu / Bellaterra Música Ed.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cc4027855193e92ae8889c492cb63ec301991f5f937863869f1c26f94e1497. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ESA032005208.
¡De la Percusión a la Batería! / Bellaterra Música Ed.
El piano o la màquina del temps / Bellaterra Música Ed.
¡Historietas de la Voz! / Bellaterra Música Ed.
El violí i el viatge màgic d'en Martí / Bellaterra Música Ed.
El Violín y el Viaje Mágico de Martín / Bellaterra Música Ed.
El Piano de Ana Es una Máquina del Tiempo / Bellaterra Música Ed.
De la percussió a la bateria! / Bellaterra Música Ed.
El Saxo y Otros Instrumentos de Viento / Bellaterra Música Ed.
E. Granados i els nens: E. Granados i el record perdut
Chopin i els nens: El gran secret de Chopin
E. Granados y los niños: E. Granados y el recuerdo perdido
Chopin y los niños: El gran secreto de Chopin
El petit Mozart: El petit Mozart i l'anell màgic
J. S. Bach i els nens: J. S. Bach i el regal sorpresa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd1780f79da32fabd4e4cbde34375b887331a8c94add797c854a423aec1c2d4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ESA011300357.
El Pequeño Mozart: El pequeño Mozart y el anillo mágico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9727b186049c2edf9ee8d55dcd9144bf862a2d30887483dde705295f39a39e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:54:53Z), 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/ESA011300366.
J. S. Bach y los niños: J. S. Bach y el regalo sorpresa
El Pequeño Albéniz: Las aventuras del joven Albéniz
Beethoven y Los Niños: Beethoven y el amigo inventor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd0cc1dc2d3d33095fbb8a4bcbec3fe740328f41fa4c99b603507ce62f59d49. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/ESA011300252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde395bf5ea6e420065bb1fe86f5c1023b8a906e894c8b63d01b7254d8922b68f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES59E2310003.
Beethoven i els nens: Beethoven i l'amic inventor
El petit Albéniz: Les aventures del jove Albéniz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f6d2a3f297618d56a097dec05dc8d67b5f402baf9f57268ef94acfd6879bd4. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/ESA011309673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9678aebc642e1e5b0f6f3aa6386f92419cb9e5d4582d968687923b6113fc3031. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ESA011309687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe7092e20eae2f89ec54cf2af56f9a47d035ecbb5b9afbb7ffa2bd05e16d879. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ESA011309717.
Danza rusa Trepak - Suite del Ballet Op.71
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9de4f113865a3caafa1ffa47f7e6c3383a330496a00a807db2dec7039b8772b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QMARG2050422.
El carnaval de los animales (Música y movimiento)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29c1142c353cf48fd62f6c64e0fee0f981c7190eaabee593784f49703eefb6d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/ESA011616719.
Aria soprà de Bergamasca - Aria soprano la Bergamasca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59d37284a9b921e3aef4e928c7bc830bd262bda73f6a91b98d031ec9ac37609. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ESA011618142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7d68e119f6ee68fe33d63f7a14089b754b520fc64dd0bb9b149ce896931662. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ESA011618150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bb78d75e3f8bae667fa9a5812eccacb13c14501d3f5e300905c4aaa83df197. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/ESA011711471.
La Rita es desperta - Rita se despierta (Caja de música)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f48ceea3733a737c4a21c3539befdca7b30648d7085290915ab0c3f3d4e1af7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ESA011711467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d30a17fdb89e040f273b8416be882a8a8acde85b7f1ae5e791bd4d92cb4a35. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ESA011711468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4c3a79d73ec77f4dcee8ea8af3933178803854c717cbcc9233aebcc9893646. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ESA011715367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8104bf7e7291dead7cd32ae355698bab6c28f7e1a4b63db89dd6fcba4653b3. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:00:45Z), 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/ESA011995808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4df007b4f44be000a810f5f4a5ca47af1e63fe02bde6cf9ad9ab31037c8e949. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ESA011939873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc077cced0fcdf6038f3ab47456049f6166c32ecc52a298a87493c235eaf516. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:54:53Z), 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/ESA032010323.
Embrujo en París / Bellaterra Música Ed.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4440a1eab0cc58a1800f41e4445e3b37a28251d0ca298574b972cacc749ff810. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:47:54Z), 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/ES59E2120021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797374be4333012c6d492d1e478763ccbf78363e59ae56c779f6504b252b4242. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES59E2120016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4440a1eab0cc58a1800f41e4445e3b37a28251d0ca298574b972cacc749ff810. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:09:07Z), 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/ES59E2120021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0cbfa01906e3cdfd8f1c1014992d9968a1280c27050263fe7a2398e7eb6ecf. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES59E2110018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8305361c5e1820834925ed1ab1c7b8620976d6a0d95f0eaf8802c228083e6f56. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:05:01Z), 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/ES59E2110020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84df0aa560a9777ce6d2192fe8e37e353bebb09aab2a10d77d92c1bd3a2c071. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES59E2110021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83aa5482d9e989cad65b57616a0eeb53a1885aeb3ccb9d4c849a7d1672912e64. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:02:42Z), 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/ES59E2110022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed85f4e36679e551c1954a0bf73404b5fbcc2bc7dcfd15de803325fb60d15e4a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:33:13Z), 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/ES59E2110024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853948a97848b00c86f18768f3ff92cc4f4eb5950a3ef6e455e2bded5d4fe6fe. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES59E2110030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f4e488cecbb697984b70b43b67c58eff80eb3c9525ba3c75f86cec5b133eeb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:51:01Z), 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/ES59E2110032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4570b2b9702d44223ca7842283d14341cf3ebc78c3f7ace68b8bb904d80746. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:46:18Z), 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/ES59E2110033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d4b3dbb6adfaba92aa9f4c098ed76e831710ca9ac5a7c272f0a9f4f3f0837a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES59E2110034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0597f5bc12bb077cff93ceb7bc8bd7dc2a9d64ace85731e4259afb041f938cc4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES59E2110035.
Estrella Fugaz - Estel de Nadal (Instrumental)
Rawala i els quatre elements (Música i Moviment)
Música Sin Palabras (Juegos Musicales en Familia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b26cb430202e5080ce26405fa9963f3aa79849031db1d93b1d6a829ac18879. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:21:07Z), 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/ES59E2200024.
Rawala y los Cuatro Elementos (Música y Movimiento)
Conchita y Salvador Van al Cine (Música y Movimiento)