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 0xd7949ec06dfc1a1a152396c425b6eec6ad6037b8e8bf238ee12490dbc7732a3d. 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/7fb31a77-ac26-455c-887f-c76d719466a9.json and https://artists.proofprofile.net/proofs/artist/7fb31a77-ac26-455c-887f-c76d719466a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Papi Que Bueno Tu Ta (feat. La Materialista & Arcangel)
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 0xf7be3fecdda95adc4b0a9ea62cdac5d2562e5e05ed30af02b9c37a6a9bb9da4f. 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/USHM81241649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1bead29e8bc4d5b6977d568b09ed1fccf4b98ce52bf10b7e0c8a866929030a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/USHM81371229.
Pasalo Pa Ca (feat. El Alfa & Paramba) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8631166c7d038e881e1e03c0761df3afac412cc3907634b9558271cb6a839695. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/TCADJ1742739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6073be499919e47ae087ae158c5c03c76a558cccc37c4b495970c8d249ad359. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/QMFME1923189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6f21ae02d80b0397efb6de54442ac28298a4b266f8acc3b9dd6200acf472e0. 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/QZQAY2116312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dce6143aa8d1493349f1b484d6ccbd08f0fca7ba46834d6ced7eb46ea72f8d7. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USLZJ2538041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7de663cebc704758cd4dd92b51f6218957a8328308e8d24593c787a7306b6f. 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/TCADJ1777142.
Yo Tengo Un Problema (feat. Milka La Mas Dura)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4502e24da8c26cdba2e70b320f9b317b7fd5bd70039be2b96fcc3d4508a757. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USHM91304618.