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 0x863f74ee359cfacfc587f3f9776b36650b37e9ec1d11764c1b9e4d3be1f15ef6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ac6373e-e54b-402f-a8cf-c3c773711e1e.json and https://artists.proofprofile.net/proofs/artist/5ac6373e-e54b-402f-a8cf-c3c773711e1e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
OBDC Monstruozz! - Carnaval de Cádiz 2014
OBDC La Vida es Bella! - Carnaval de Cádiz 2016
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 0xd0192025809c8463984cd115f111b3a1e070a184f7f5072c9f498948acbafbc1. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:51Z), 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/QZNWZ2009634.
OBDC La Última Flor... - Carnaval de Cádiz 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efba7d64b9520f4af17f4b0ff9853e1625bf8c7f362c82c289423cf35fbc065. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWY2081404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e7a3efa11e54133219cf291e1516c1fda8239320c139e5419dbb7d4811a590. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZNWY2081406.
Bajo la sombra a tenor - Germán Rendón (Pasodoble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215030d5fb8a331775c8a7c600d7709c80fcc1f93a30c699abec368cc5baf214. 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/QZNWY2081416.
OBDC El Joven Obispo - Carnaval de Cádiz 2018
Los Resilientes - Carnaval de Cádiz 2020
Si yo canto carnavales en la playa (Presentación)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57592dff3663b8e9439818b83bf09bc15b1e317cd6df8810c0ed38b9e6905650. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWZ2020154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cf0a786f21f915acf975f0b4135670facd14b144cc4d14b8fa31d45c8473c9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:35:27Z), 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/QZNWX2082505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db5e66e254170fa1626b0d15818caa687d9fe7f52cb55b504431b05e2102ca1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:52:15Z), 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/QZNWX2082507.
Los Conquistadores - Comparsa Carnaval de Cádiz 2022
Se me clava en los 7 sentidos (Pasodoble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8872442cd1aaca774e9becd97cf01c7c111a6aae5220cfcf839958df9f70c2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6L2281654.
Los Trampucheros - Comparsa Germán Rendón - Carnaval de Cádiz 2023
De lo más bajo - Presentación Los Trampucheros - Carnaval de Cádiz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c05cabc66347197b6633cf9468a812197b501d19241136a92c87c406b7537a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZDA72314992.
Por justicia y puro Carnaval - Pasodoble Los Trampucheros - Carnaval de Cádiz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08873195052ce85d7891cf93c3bfe80ca6f93154ef4ebc3d8f283e79037b6ab4. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZDA72314993.
Voilà! La casa del horror - Presentación Donde Fuimos Felices
Donde Fuimos Felices - Comparsa de Cádiz 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899d7e9a8d0c934f83439ee73d762556f3f32f44b82f01243b29345d12151a8f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDA72467898.
Si hay que elegir entre España - Pasodoble
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d4c1d74302a72c7868ebd697c813ea23bd2f4528f77332389cbd77ea492b38. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA72467899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d4b86339c5f04db3500bb14472e8d91519c510467403a482df810a7caa40a9. 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/QZDA72467901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8484fc219bfa6174ded4ed6adcd74404d2934f69dbd227adc224a31b73ad3470. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZDA72467906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5174180fcd1de878919ca58dfb10987134067d87b72ba3484edfa614097de9. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZHN72596221.
Por las puertas de la tribuna (Pasodoble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23eb7566df95540fd45753dbefc97bf4769b2c0e1a707ac9c3886c8aeceeca1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN72596222.
Martínez Ares/ El fútbol es (Cuplés y Estribillo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967d42390edf3305cf1aabef25ca4b9f09cdcdc77a91d9f59a0b8044ef78bebf. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN72596223.
Si contemplas que un fachapobre (Pasodoble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9656ff7e42fef6a122695926ade518ed7ec8e99212363b973d6c3722023700c3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZHN72596224.
Peleando toda la vida (Pasodoble gordofobia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cb363705833202a6055a672bc44b115fa50a6d1c93a9f9742a8024193ec710. 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/QZHN72596225.
Aunque ya soy/ En Cádiz cada vez (Cuplés y Estribillo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6979b7d6b934e66b6ba4d42e8bb3daf6b5db23bb0306d3dfe9bef98aee1f77. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHN72596226.
Retando a la moral de los esclavos (Popurrí)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09aafbfb8942ccd667688611d33d1f1cbfea6b6084ad9d7fc09101eae7c95ebc. 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/QZHN72596227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a182bf564f2c863c3a56e5747d2086ec01fa9c0b6da02c50d05225c54d7a62. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHN72596228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cecd6ca5e855b7e4b57cffcf55d26cba8ccbb1de39320ee80a283d4a4e0bba1. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZHN72596231.