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 0x9e28bdfa98abe1c0bb4a4740112e81d666ec7a88e5f1a235cc2e05d6ed8de84c. 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/f5eff871-45fc-4c02-b6ff-3866eea91ae6.json and https://artists.proofprofile.net/proofs/artist/f5eff871-45fc-4c02-b6ff-3866eea91ae6.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 0x343aa371221e42eb3efa5602d76e22fdbd0857010c60f9740e23f82e11d27b33. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6M2082092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6c70b9df103c32141d975be45ca8b9fa864451f7de555b8dc1cf8597cf4162. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZK6M2082095.
Mix Hora Loca, Pt. 2 (Ya Tu Sabes, Rica Y Apretadita, Vamos Pa La Conga, Danza Kuduro, Sopa de Caracol)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb505fc742da8137b140ec7fa238fae3321be0f12726272dad4f383748df2f2f8. Chain 2 (Bitcoin): anchored in block 957839 (2026-07-13T10:06:30Z), 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/QZFZ52167879.
Mix Hora Loca, Pt. 3 (Mambo N. 5, YMCA, You're The One That I Want)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eece3df97d79d22baa5308bae7224ee27fb483bf8d6f352fa4fa8df302ba0ec. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:24:08Z), 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/QZFZ52167880.
Mix Éxitos 2, Pt. 2 (Las Avispas, La Bilirrubina, A Pedir Su Mano, Tu Cariñito)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd151730975ab0568cd4dcb5670e6335ccbc541cca3e6c60c9f6349d2fc3fc3e4. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:25:16Z), 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/QZFZ52169716.
Perutonazos, Pt. 1 (Matarina, Cilulo, Vaso de Cristal, Mambo de Machaguay, Adios Pueblo de Ayacucho, Ojos Azules, Poco a Poco, Huaylas Macho, Mi Linda Flor, Pisao, Pio Pio, Carnaval Arequipeño, Carnaval Ayacuchano, Saya Negra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da849d10ea7c6a08f836f5923c3e0e9a6be2c29b82a9fbc8e508eb3b372f06a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFZ62134780.
Perutonazos, Pt. 2 (Ven a Bailar, Salta Salta, Siki Siki, El Aguajal, Ya Se Ha Muerto Mi Abuelo, Mujer Hilandera, Anaconda, Shipibo Enamorado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1f4a31361da3dab25cdad2183fa9f2e49aa17bb779a957870ee7dd19e0e264. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ62134781.
Perutonazos, Pt. 3 (Sacarroncha, Acurruncu, Raices del Festejo, Inga, Jipijay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089f2078e39afb67b4a8d04fb3650e4659adc6697c303bcd6649ee59de6c6540. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ62134782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7dd49bfa24ca30713e287a5cd3fee88320eff1d795b3247f9bc392d31fbf3b. 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/QZMEP2176447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eccc4f6112095307a0f131855bd2596ddcaa77c5cfc86336e4f795e214a9889. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZW9K2231316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f5a213c4abd7b42d7db6c6cafa3ccf798ab06a35544d5be02e575e75be3a35. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWFE2596032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e8c9e474469189f062e75c006c39918833394ab1aee96c6b8fa735763ef6ee. 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/QZHZ62197490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a296d4648de77e8df96c232bc0ae22301321a4c7e275c617e3374ed2190c3d3. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZHZ62197489.
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