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 0x4a1d6cf59d01b4b7090c98a0e9c7c8b79259c465de8f8841f636c2c3fa2036be. 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/340ba396-0089-4967-9f37-92e298072a7e.json and https://artists.proofprofile.net/proofs/artist/340ba396-0089-4967-9f37-92e298072a7e.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 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 0xd5083e91fc10c3acc66cbf010b28a611a1241819e15271e6191ed692716d77ee. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:31:19Z), 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/USCGJ1780177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4a6e0b4e3cba015c7f9705dfa1927b5ebffa8d96a4a686c02970ff6ed53f07. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USHM21710907.
Homenagem ao Malandro (Studio Session), Vol. II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4c8f2642f06cf1b1f1addd47b14e71c0043f15125aefa753994ed3560b0702. 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/USHM21811542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484730fb8210c318a088e744514bc2b9a19065301028f973a079ac069750a9ea. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USHM21811544.
She Got the Power ( Ela Tem Poder ) [feat. João Castilho]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5791ae369773c7b29b5d17a8be343904968b19a6517093ae0756f2205ab12fc2. Chain 2 (Bitcoin): anchored in block 957529 (2026-07-11T06:30:13Z), 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/USCGJ1921610.
Da Arte Me Faço Criança [Quarantine Sessions] (Instrumental)
Favela Hype (Love Is the Way) [feat. Jo Sarah, Natan Gomes, Renato Massa, Wagner Viana, Gilmar Ferreira, Fernando Miranda, Levy Carvalho, Nando Barros & Trombones do Brasil]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a14a3230e636fce1df0ee57571616f8d5614a9d461c0c135be21eb035161b01. 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/BRJK12200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29270ec6072216d96dd07d37a791980f56d79e5b839fd7d8d97783552e5be5fc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:29Z), 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/BRJK12300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9c818f3d82037a8cd944e75496ebfa5afc9fcb4abc25b26b064f3c41ee8048. 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/BRJK12300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa45920f7f788688cd54d5bb02a9e151982144caf940b55e66cad8b244f817f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRJK12300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35fe37f71391a9f391de07204dbbcc3b0f9bfe29a6a73ebdc3b1fd168d8f871. 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/BRJK12300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7eadad372a2841c83d43fb7f0592a57a2b78fb93dbbff3e4d874579e8ca9d8e. 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/BRJK12300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70701617da5d556aef5450f01525422673a130bc195b17d5405dcc9fb8ba8c9d. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BRJK12300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f0ed4e8ac681b5f488e1e7cb5e71ca10ca8ad78a71fdd079658a2bcd82a240. 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/BRJK12300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c2ad7641be484c9d484b7646768b7ea286b624425b8dd1af9624e72bb01e2d. 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/BRJK12300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750c3e3b583883604965df59dbb2f2d225f71a9786a6be221d2eae17017e8cf7. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/BRJK12300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecff01518ac95c0195544f1ac860f85db07013bb63803c9dfb5f265cc0a493fb. 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/BRJK12200002.