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 0x9dd128310ad5eff840f268235c3c2e71ed42a2559bbc97e7b50a083d233f8438. 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/2df5644c-dff0-4126-8feb-9522c2925c1e.json and https://artists.proofprofile.net/proofs/artist/2df5644c-dff0-4126-8feb-9522c2925c1e.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 0xd29f6b861ca20879dee6917fe7a7e74f9f2e4ba51ad9eaf9845e237619713815. 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/USANG2180897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcd118d0d2daf185bfaf21a239dda5223b0cdbd7d0675055426b527e78392b7. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USANG2180898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b7c0f77cf3bd55f28899c6de8f0d67ec4e5b16927158f50069f3b26bea3e59. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USANG2180903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c2ebe030d2734a4e8366a84fc5091bc2c8d63f1bfe30ff38a5237fe2c921f7. 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/USANG2180915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149d82383d40f0e4f750a26925c8f7b7d69de50e951c78693250810c4e1d9dcb. 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/USANG2180919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3786383f95cf7920135ca77b7f0781bce50b14be1c9351f04493f7b7c3a8e37. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USANG2180922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d3dad6954a53bdd150c03f0c58fa5d1272436bf06c8a5f57786ed3d5090679. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/US3DF2205566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86da5c7bc144ac66a98ecabc747850cc8777dda7ebdca468d9f1515698740bcc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/US3DF2205568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc17d7e9e19b6d01bf26e6eb0f6ec0991188eca9f4a0544fba4f7287165686a5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:44:45Z), 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/US3DF2205580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665102bee1c473c10a99ee555db45c5e857525abbdead4a5252159d8faa40c9b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/US3DF2206490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5497a165764b8e0e3287e6cbff8d32ad6eac20020745e47141b053cb524a6400. 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/US3DF2206493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c1de81140b041180edf215b6106ff16ad85af960e4ea74ef4518ecd501aef3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:08:18Z), 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/USANG2226470.
Los Clarinetes Con Wepa ( Version Radio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2be4e9d318416e46511bc999329dc74330a2ebd883bcb2d1ab846174c442ff. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMFME2590595.