1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xaab27b9f80129b0db9807abbd030066c7f5220511ad87969c62d80d3d470ba29. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f457bc5b-2ffd-4d2c-b34b-278d1b24e1f1.json and https://artists.proofprofile.net/proofs/artist/f457bc5b-2ffd-4d2c-b34b-278d1b24e1f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Florindo Sassone y su Gran Orquesta Típica
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 → block OTSBitcoinBlock must exist at that height 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 0x58fef4ebf4fd8ee10c04f0b2585b14426dd1c582799371c1ffd9687e3ea56d6d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF050400845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56714e55d0cc0dcac4f5042a5161289dac546997fbefa4f785f75b24277aa10f. 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/ARF050400846.
Orquesta Escuela de Tango de Emilio Balcarce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251430cf7ddf479503c0626b2698f32c9e2c8a5b82478ebdd2259faf125eeb2c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF050500277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780292895e7cb1788b7cba15e4da3f4b0973c0164b6f1d41e42310a60c45ad7f. 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/ARF050000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436297d7e0b62b03bb2a631e6342022d036116e3b73ff23facd0520fad97c6a4. 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/ARF059700187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152f4813f0c6a2fa63b442b469290a00a1c65f0c31e08a998307cc9ca7c2b79c. 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/ARF050500475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233aacb9f526231ac42fef77a8e72057b80887d25426bad6731905afbc55e09e. 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/ARF050500485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f48488825bb33bd1b0284af4114584f3a3381dde27558a0161d951a73ebf8a. 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/ARF970500002.
Fabián Bertero & Los Músicos de Buenos Aires
Rodolfo Lesica y la Orquesta de Osvaldo Requena
Lidia Borda - Brian Chambouleyron - Esteban Morgado
María Viviana & Nicolás Ledesma Cuarteto
Jorge Guillermo & Edgrado Acuña Quinteto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e6daae3b59e628425b3b4a6103aa7f6f0907f3fe91dcbe0c56dd8136ba584e. 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/ARF050600109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64a46dfb99cc4ff870fd5419486c26232f6c5457ed1fa34f8f7d4096168b7d4. 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/ARG601013115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80cd52b3fdc8ea55da5e511bf3ae54af897532dc540beaad20a77aa190007c8. 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/ARG601013117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec437e242d7b3f1dac3f602cac4861047f9941efc1120014f36428f2e9d61e1. 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/ARG601013118.
El Aguante (feat. Rodolfo Roballos, Fernando Taborda, Javier Sanchez & Sergio Rivas) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedd167dde4220f32db1976e164c58863a55cf0276c0edae956990e1297f873a. 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/ARG601013125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbd4d79d885399f1542d3b3e91308a0f4923d4f0f2cc120731a55f62aac7a28. 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/ARG601013126.
Fuga Nro. XV - Fragmento de el Arte de la Fuga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1408d2c1f84c77e2c2df729cd935044c37c273e58b0f0957eacfaa03226500. 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/ES6101026805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b05097628639965fadc242528b1f5c22488306a9a8fae9890d914c2c3112b0b. 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/ES6101026809.
D. Brown, Javier Sanchez & The Prophetic Poetess
D. Brown, The Prophetic Poetess, Javier Sanchez & Barbara Fant