thumb|right|300px| Mauretanian cavalry under Lusius Quietus fighting in the Dacian Wars, from the Column of Trajan Mauri (from which derives the English term "Moors") was the Latin designation for the
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 0x245fd35e75b8dc4e04647c1045ec84965a45bab0cbc2eb8f420409ad1f8da860. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34512e9f-5c5e-453b-80e6-0194f8fcbfbd.json and https://artists.proofprofile.net/proofs/artist/34512e9f-5c5e-453b-80e6-0194f8fcbfbd.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 0xafc5e8fbc79523a5b4d6be3055cc58b7ccd11737b3372fe0306bceb00b22624f. 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/ES71G1718762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc557facebc2040b98c6e3d9ff05ae66afd98d1af0324e1fc9c46e70f2872058f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES71G1718766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f720f8be3043a23aeeb3dc8a19389eb55c0d70c621216446d2722040b74d8d. 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/ES71G1823157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce16b2bb4e02bc091c4395d406be9a4e00ceabce85cc1a4b3567a9cb42fb9af. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/ES71G1823160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf0d9602e23bce095c50815fff0d44316fe26066a8fa8fa4f4757dd22e687c5. 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/ES71G1926824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2436430a485e7a222fab3601334fa0909df8ff3b1d0ad4fb0464bef3bb81e6. 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/ES71G2037199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41f89eb209df9310c905f12d024d25587fc2255333755510ef88ba04c608c0f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES71G2123209.
Huye a la Deriva (Nando Costa & René Reptile Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a690a14fdf475de0d319071d9f19dc119326416f37deac733d00cd7dacfc420. 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/ES71G2215429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe760085b77f4fb7ec8e9af2f570dcd4083ad341a987458df331e2ef43b6304dc. 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/ES71G2220221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29ada00d0c411e6af5e7c8ed4c194998301ea75f3051f04d6b86d14e20ca6fb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T11:05:43Z), 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/MX3742200476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6308123f94baa8a18657fa5453dcba215035452555238a6e04536adf0da8cd. 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/QZW9K2300790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f182f6ec078e9572bccaca843fb5f81ef7e72e9f33be37d558dad89b7b896e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ES71G1707606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb53c556885323df8f10e11e37a405d0ec92f002b3f30df83da16c63aa8b732. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:30:45Z), 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/ES71G2324185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bf517ff9044760420146d795a12171d52928ab21833a7a180d28fdb09881eb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES71G2244452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a173a7907279a2b058916c01688556fae2f44e6f4b85eea46ef0166659b38c1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:01:52Z), 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/ES71G2306556.