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 0x77428032a9992a7a4c520c338a1b5dfc1b1166f472a2dc63a2b4ebd2e969120b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/922a1bf4-e313-46fe-8e45-2850e6a01fea.json and https://artists.proofprofile.net/proofs/artist/922a1bf4-e313-46fe-8e45-2850e6a01fea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Roberto Muller: 14 Grandes Sucessos (Brilhantes)
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 0x1de7b959fc7301d441175bf203b34a08d8a7fd0aac70a26ecce167a7a1a3181e. Chain 2 (Bitcoin): anchored in block 956809 (2026-07-20T11:57:13Z), 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/BRSME7100312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3832fddd3842e38dd9452f883f3c1f9da884a0b28f415912a596361d92b1e7. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/BRFAM1100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f85cec4c8332f09db268e18a191c271ccd9aab3ba3a4cc73243a553ec94384. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/BRFAM1100136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30518fb8c9a49438207204a9599cf4fc7d709856d44ea1bcb229522454bedda. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BRMAX1402152.
Matriz ou Filial / Ela Disse-Me Assim - Vá Embora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fda59de1b28efa275ff5e608b3a8b74a3b329fc41bc070bb569341040b90a08. 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/BRMAX1402153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f58feebcd933d4149247d273c46c312ed34c493d085302f06e54936aa20753. 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/BRMAX1402154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b39bf1a05712f90fb938309c210d66c5392f378ef19e380e375fb29465806f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRMAX1402155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a63417b3dda3d2031e4591bdf1db144781c1ce2a1c318817da78216094de19. 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/BRMAX1402158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4345427d01e12368aadea45290f77a88c762b4ec6c84c18a1ce15be4b819e6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:19Z), 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/BRMAX1402159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3326d5ca58a5098c30af4604ef166941fe2d0e92337f30690c01acc1bfda525f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:08:55Z), 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/BRMAX1402163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e88831fb4a31aa3a0bc65c5e18fe9bbb47011891e66eceb16eb0adcd031ba4. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/BRMAX1402165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0ee1736e84a6015ca54d9e82d3e31c527a4894c6910a1f720b143832d90668. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRMAX1402166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfa090514ff56e4d2bfebdcc52ad27c424dfd49974dc7dd2b1a42698c601b82. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NL8RL2457172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b7247f92d3e92d6574ae0ec1f51452cdc53573b3eaba287aa599da7fc96bb4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRMAX1501404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fb7b98d0eceed6f2d8d1c2252afbc7504ec0a3740162756759ce196198fcbb. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/BRMAX1403090.
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