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 0xd9b7f161ae4281f1ed157b8dee0bee865b2521fd23c3b2772d874bac2b206335. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f3ecc74-e4f1-4393-a43a-91cfab5bce0f.json and https://artists.proofprofile.net/proofs/artist/8f3ecc74-e4f1-4393-a43a-91cfab5bce0f.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 0xe21dd0ea13678c146d00c834c97a886e4935142d50be46a998ea355e2b958a2b. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZDA82343694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d7be6934d639a8593d7652c960b86565a0b6ac1972086191bdc23d6b7f8b42. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTB32333948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977df86c5d52c94d4521e6675fafae07dddde84085be000469f02d98919a29c2. 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/QZTPX2446987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596347bb3589e0739fbef93b3a1f38f610d2116496f2e4b3173c632089562396. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZDA62409952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fedb3926770e2fb649887dfda864bf4c709bc3e8e402d785b2ef8c38ff608b0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNJZ2400688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e8c003c0aa672bd146437ccac2fc56f7b861ab72bb19e04a2955585fa21c1e. 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/QZTPX2488164.
ÉXITOS DE CHAYANNE: Dejaría Todo / Atado A Tu Amor / Un Siglo Sin Ti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e8c003c0aa672bd146437ccac2fc56f7b861ab72bb19e04a2955585fa21c1e. 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/QZTPX2488164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb737439550a13f33ac44528a44b8ddc13b20ca46b8d0b3319b8c1fae474177de. 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/QZW9L2451615.
MIX PA' CHUPAR: El Farolito / La Brujita / Sabanales