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 0x5e2d60682fe77f6bb0b92a3991881090b50adada04c3222d149032293974ae1d. 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/08390d13-db59-4136-b75e-2c5c4b99cb50.json and https://artists.proofprofile.net/proofs/artist/08390d13-db59-4136-b75e-2c5c4b99cb50.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 0x0d0fc8786d39140164c6a109a4abea5e81fe8e97aab468defafd472ab5c8a03d. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/BRZVS2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f791a9aad5b72093d38a4cd3e2bbbfa424658b8bb9745cfba88999f70968afc. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/BRZVS2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3674e2e6995a5e03132020749fa2bdf16c0eaecf8b84125b0a81df2312243546. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/BRZVS2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bc5cf417a59e585e224ade994600139fa1dd8c0e50dd79a8d3d33503f33eb7. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/BRZVS2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba346277a4bee5b288f1470f1d8cbfccd332457dbe30bdc36e4cefa81d7ee1ba. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/BRZVS2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe845d20d68f4f59f7d06a03f0e2a8d699d3725d4a25abd5d5362f816f4973a5a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRZVS2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d688cdf14bbc6dcbd22f6bbbb9709476bedffd48c98b57c7c36471ae2a197a5. 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/BRZVS2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1774ccf76550001db88c6fd097fa9e2e85940ee6ce2d7fb1976b6cd00d57daa9. 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/BRZVS2100006.
Resenha do Brito Com Cleverson Luiz (Pagode Perfeito), Ep. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c773a6ecc1e13736a76249d83fbb2617e5d3ff700eaa1d6f904c0f451860c19. 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/BCL6D2200071.
Resenha do Brito Com Cleverson Luiz (Pagode Perfeito), Ep. 2
Resenha do Brito Com Cleverson Luiz (Pagode Perfeito), Ep. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e54c5c5cf761ecfd138ae2e26f5b7bcedd903d010f216128c26c4b05c8a826. 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/BCL6D2200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11ccc41d5adeff642584b303ec686b5a27a0864ae4431658504dacb4ced43ec. 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/BCL6D2200080.
Resenha do Brito Com Cleverson Luiz (Pagode Perfeito), Ep. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518e4b05efc7facd897cef20b1043968196b15afbfcf677bc4153cf5bb014f91. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/BC49W2400001.
O Amor é o Caminho da Paz / Universo de Prazer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a442d2190000a21f3d33db90cdef938c93b5adadfb5eb35136584464a1281dd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BKORX2500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd055e39a26bf8c9e7b2279d7fa3b726f2e067b0d5b8f2923662cc0542a247a. 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/US7VG2020024.