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 0x5effe5e5fc51f5e0e81fe4dbee3639168be7a7c2e4ef2e38e258275f3a85daee. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa93be1a-50b6-402a-824d-613028c75dce.json and https://artists.proofprofile.net/proofs/artist/fa93be1a-50b6-402a-824d-613028c75dce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sá Marina / Meu São João / Flor de Tangerina / Girassol / Moça Bonita
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 0xed6eb82e5e6fc38f715ebc2b8a9be5e455d05fab29810a5155f0b5aede69deff. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZMZ92254511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b18c6af5c58eeb9673cc37534c316bcbc76d80ad5f8a7225dc8a27511cf23a8. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZNJX2333981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef97f430be9ac5b135e68fbd4e4205872d31747d23cc1a7e966cf047213641b3. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZW9M2311429.
Os Sons, as Cores, as Crenças e os Sabores da Terra de Nazaré
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a8d0bca22907567efdb514d4e4e8eee07bdf4e8187adf2928890595d8a24c7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNJW2412530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18f3ba77215e7c00c27815a8b84ef653f9a31ef78737dc7e70abd72e8c89f63. 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/QZNJW2412531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb34750ab001ecb410692c041b463a693da14b52858712670e0d1bb02122cca. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNJW2412533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a837828430af959561871e91f1585d459aff586970b55764c6f270bd699b55. 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/QZNJW2412534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d12c7a0f2d2a47d5f714bc61a762bf8688e5e5137ef47e8ac99facdb02ee8a. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNJW2412535.
Na Feira do Ver o Peso / Quem Quiser Venha Ver
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c6ca91c0ed800365beb7c5c29c25fb133382d4359f2512fc0b52d84ad85f38. 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/QZNJW2412536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8bc8ab3244e0a3e0bc088b3ae04be6c2e5a18b364e5715dec5b0ebc691438c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZNJW2412537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52f715959e944d721354df36f400c7ffbb9db83602d6581d44359634ec8c454. 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/QZNJW2412532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824a0b9723cd4550053a66cc6675320ecb888cc3cdddaf127b149f35d2998670. 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/QZNJW2412541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb357f4fb4909fe865f6943e178597495e7264dec2830659bb5c6f44d80821a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNJW2412542.
Garça Namoradeira e o Malandro Urubu - Solo Kawany Silva & Paulo Henrique (Ao Vivo)
Pavão Misterioso - Solo Hayka Moraes (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22b8a121c14ba65b8436bdb4073f6a1fa53e5eef5905ff14e370b9021502d13. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZMZ92573314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191ea5274a728ba1dcd9d9fef021b8260eeacb1a6c01a1ca541d0c4b1adbfb86. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZNJW2520161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308cf5913a2ab9b333c58c267a58820eab69075df1a2bd3cac0646e7b5e3253c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNJW2520162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b87e8ca4b129103324a4af57c57c1ba4b8a72f8075fec04ff72187d78213252. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZNJW2520163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8269732d042c9a265c0769c6019c79564a9b12d234dc9703378ea0139ec0cdf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJW2520165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf106a3aadacc57080d9a04060ca0f47dde74b9ca22765f186b5c2bc36767675b. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZNJW2520168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613eeafce69b1734c4250670d76d4cf48468d6f9fc8b5a36bb2587096a58c6c7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJW2520169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac23c38e5a8d0195ae83fe10ca6e15f3e73aa7514b27a5e9dc50fb45bfb23ca7. 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/QZNJW2520170.