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 0xfdab5c8bc874f440de9d2c417aba1bd684676d70ebc186fb65b5b9387418b3cf. Chain 2 (Bitcoin): anchored in block 953667 (2026-06-14T17:49:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5861f02f-1fae-4237-a255-e1078012d772.json and https://artists.proofprofile.net/proofs/artist/5861f02f-1fae-4237-a255-e1078012d772.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Capítal nacional del carnaval - Sapucay del Taragüí
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 0x0c4ee66cbb2c4c64c79dd58f25e19939f936ac8db63aa5007edcb4f4891a14f3. 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/QZWFQ2414243.
Marcha Tribunera y Chevere que ché - Sapucay
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5b0ea2fa09c9f534ef2253c438dbfdae5cc4721b573b08873b3775316c4148. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZWFQ2414248.
Bloque temático 3-2024 Sapucay del Taragüí´
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476b11a164621c7b414e13f739f22591f2b496c9373e8d3ef6f76131b1972249. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:16:20Z), 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/QZWFQ2414246.
Bloque temático 2-2024 Sapucay del Taragüí
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e3041c924f7dfab6fbd7e27981c494ffdeef8a4548863730699f4a6040fd4c. 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/QZWFQ2414245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97d610a69bdaee41d8bc88c77141b43406dd81c5d97213d3053f56b5dff2192. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:54:54Z), 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/QZWFQ2414247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf553966683c5fe23862f76a88aa0c175066a3c1b7ffcde27202388f62e738003. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:45Z), 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/QZWFQ2413573.
Bloque temático 1-2024 Sapucay del Taragüí
Repertorio Sapucay 2023 (Bloque Latinos)