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 0xd9eaa1ff9b71a1ac621eb91634d828b1df6bc5a4ec069d9ffe66918280c03668. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c555264-1450-45f4-bbb7-bc5ea50be7a0.json and https://artists.proofprofile.net/proofs/artist/5c555264-1450-45f4-bbb7-bc5ea50be7a0.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 0x25b1d3b724f14ea42d1490a201b136c6ac085fd7eb31a1d7e638451962bcc72c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9K2292117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3d8b7abe9c6ec2e942982b28a1d32f443cc8c8f8980171c6859d1654069932. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZW9K2292118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1344e09469ea3f22c4add13a3d139479bcef3060dd301b639bc666e6aaf4ccd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZTPX2218876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10977148a1665ffe2469ecf6d7d4a89160d179c010b77a658a6aa500e2edd1e8. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZTPX2218877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327d7b1445e8e11abf58bc57a30c59136b7a2207d075b27e3ead9e82b7336ee1. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZTPX2218878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524ebf4539bf57dae8ae799944db6f1bcad5cc8d5e6254208d7c82a48a7207e8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTPX2218880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d65f04c1d5e90631c4f79f5be1db6f3f7fcc2840380eec7d3d9e3ce4e9d2695. 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/QZTPX2218881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d379ab84e52d3562071e076e9b688cbb639d51806746aa1aaa8eb125fbbf20. 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/QZTPX2218882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef312a983ad054111e601d0ba9e1b75d86c5921e0771b454d541db290ad372e5. 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/QZTPX2218883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194946c41fab33622fbac5556fc0629c7a16aec15658a6989a6a153d681f391d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZTPX2218884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58a9c3912374d29daeb70e4128470c059b865438f3c777ae14ff63fac135cad. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZTPX2218887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227ba5a9b8ef0b6be216bcd1578bd1adad928345d5d07cf7d7658e5855d72c67. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZTPX2218889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b1859f44c8c6b0ec6f56d8121c3068f5a05d26281c9c79a6dbf5261b28cd72. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZTPX2218892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0a37a8803020e87ff14b4d73819caa0538ad6e28b96bd4507e17307058c075. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZTPX2218903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef960dbe621a2af59cbed3c15b9d360fb5d5905dcb96513645cbbb2e1809860. 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/QZTPX2219015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55197836b2f12099067b6f44fad56ae78095ffc2862c33af0cfde11612172c2a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTPX2219016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1cd8114129854fe78f61eb63ce7dcf72a091bb84b24463aaff05102e6d4fa0. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QZTPX2219017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48df7f3be95206f779364f09c02ca378b8f74830f092bd984136968cf330656d. 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/QZTPX2219018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a56b9a41f0af1d1afcaec97713c511cf51e9f2469405405c9c5bb462b03fe7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTPX2219019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1aeb632216bf86850084f1292bc6a4aab998068058dd0d8e0034ff3a773b4e. 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/QZTPX2219020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b417c84394355ed157c41204c44b359e4c8a8b8449b7bf18019c560bbec74a. 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/QZTPX2219021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a406768982388b02e3fbba6487254610c299120e7f6d9b493409c8ae44ce55. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QZTPX2219022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1732405dfa06c555283540b186794804654aeee7afd39c4ad45c086c63318764. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTPX2219023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc3c18a98f4947985de6e9528f6b35acd7bcd13ae6f0b1ff7d2a7fa08185182. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZTPX2219024.
Não Me Deixe [ Amor Sei Que Não Dar Mais ] - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d01c566f65066bf9f722b1aa35d8d002aed889644ab499a995c99242413efa1. 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/QZTPX2219025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451077d65fcb947bbf25a47a33b1dc183a4b5fa03e8c5db75b8bed09b782bba2. 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/QZTPX2219026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b41de424185e4fa96f18cd5f018f8bb308fb9ce8f13120501e934280eb52fe. 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/QZTPX2219027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244f7d202c5d9b64be4a8726501e8ba4a9fe468790e43c3990772eef85e1223f. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZTPX2219028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cb08ddad4262508dbcca563e0743d7435f872475209ee5272a443f343d9ad6. 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/QZTPX2219029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea2f79dddcad57d3b7e91cd99a0f1efd80ae2f95d277304e3436065ea224981. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZTPX2219030.