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 0x79e63fee16d16a93d782a76fe70f541251c69e2eaad0bd7ca5bfc4a0391b6f46. 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/8c340a3f-1538-4204-9756-5eeca7203b30.json and https://artists.proofprofile.net/proofs/artist/8c340a3f-1538-4204-9756-5eeca7203b30.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 0x739159086f170e7b1d974fd0173aca9972be5144f7df2c4a9bcce080bac9c0f2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCA6L2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d93d64fd63f631c2a204483b865ee7098a30b07b74e61d354e1c1a18d096658. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BX3022300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47497cea402cbe263c767ea34926d558376df34958710ddb62cf817ba21de64. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX3022300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf618c599cb6241d7e030b8e158249e0524eb3e9689d69e10f0e7348605666818. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX3022300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56dcb16085b70d2e49a1633aa1cf3ab7b802e863f9cf89ba1771a25fcc96ee0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCA6L2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09281dc911493bb27118c796461211be521edfab7a52d636d688e0b3dd909c6b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCA6L2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5f53462fdddf27af767c3e78a1be62daf4ba91d5cc7fd058cd3643ea2968f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCA6L2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4824cf4afb4fa674d279eea3d9abed8382ae080f9c3d33db8f483e1d828b3b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX3022300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246689ba4895e1fbf7908cf5c2a4ffb7129bfcaa61c1c4635e348529536b236e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX3022300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5896c1e9a1f08e4a2f782b80188a104746b44c6f6a902b27f3b6cb2dc89c04. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX3022300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252ca810b41b2dc7d012389890636af4a632f69df261431ebe7ea9273d90fdea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX3022300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c3207530d7b85b83bab2bed98ecef8a7d3f6aade8be60d0a4821697931115d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX3022300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dccda1ced69044f0947760aba77a51a87949aa7512c1f2f373770c9fe21479. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKA7Y2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beeff2802c166046e54c473481238d87c100f3c2a670b5e8b4d8bb0ab3ffbce. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKA7Y2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e27c832226fcd843cf7aafd8b60be72a80105ed990e1cb54165f5c763e9de2e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKA7Y2300003.
Nosso Quadro (Lo-Fi Remix) - AgroPlay Verão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79396d6df87eb851da3eb5e49148f32c69edc151cf5d4941aa8d592c21cde890. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BKA7Y2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b2fb8e879f94c82038f3e25d93616569d8b271e1b0477bad24f93ec445d156. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXBPF2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb971a5e655665db581d5c1a6ed0bec086db410d19441c951f26979c6baccd266. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXBPF2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bab79cf03d3ea1e37c44bc4e02a1dc7014f6ebf881ff709e1d4fbb99f9719c8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXBPF2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcec67d37f44d506bb0c42b17b6fa8cedac2d769860c891c46d969c633aec07f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXBPF2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554cea7c35d9e3021c6e045eb56a8827c861c32c1a8d2536316c346555016586. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXBPF2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c9e885777678ab471940498d93dc4f8f94bf44be2762660be9afe60474b0c0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXBPF2100011.