Cantado por el Coro de la Catedral de San Jorge
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda73ac8eaeb31643bd008219e5edab638489fff8f09a75bb446b92f89d40c79e. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f65dd565-f5f4-466c-ad88-79511a66cb09.json and https://artists.proofprofile.net/proofs/artist/f65dd565-f5f4-466c-ad88-79511a66cb09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Divina Liturgia De San Juan Crisóstomo (Canto Eclesiástico Bizantino En español)
Paráclesis: Súplicas a La Madre De Dios (Canto Eclesiástico Bizantino En Español)
La Pasión Salvífica (Canto Eclesiástico Bizantino En Español)
La Gloriosa Resurrección (Canto Eclesiástico Bizantino En Español)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b18a6db26e63735e9dcca044f14f8d6ca8439e7fc7cbccd49ab10c217ebef94. 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/RUA1H2026794.
Salmos Y Alabanzas (Canto Eclesiástico Bizantino En Español)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2972a152c0cf82e6afff49485fc8e442a323ef924c6ecdb1851151721d300b78. 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/RUA1H2026859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41e6b8e0c0cd5fc1be45308053e4e965d22d4ea693859ff94e5f6e77db46612. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/RUA1H2026860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359b540041e695243f6f11c45260e803a591f230081909d589dad5cc7522a153. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/RUA1H2026863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78473f9b8492c6f8b3d18b2196355ef6b4ddf6d619bcf914fcd6be9fd9df9385. 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/RUA1H2026865.