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 0x8520c4191c145beb71f93a5c9873577c35c28958553545e0a1b598634606d744. 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/061d2de8-6793-41f8-8a0a-0d3a6f0af04d.json and https://artists.proofprofile.net/proofs/artist/061d2de8-6793-41f8-8a0a-0d3a6f0af04d.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 0xb8acab509a5e28544ca3b8f203c926a7219455e89f8471d6cd43d40be125f0c8. 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/BRBMG0500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f888d24b8b3fb326870ea1f2f71babba7afc24800f69e4b900530dab0ede9f. 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/BRBMG0500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7850b082bb1a8bbf3381e89335742a9fb31d46bdde24068bde86d279b43791dc. 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/BRBMG0400183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d3a9c2ec5d50c347551a99230b2a098ae409426cd07303516bd637796c9749. 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/BRBMG0400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fe970311d705c634aa4116656b8e58b8b0d31ecf447dae40804a41eb7918fd. 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/BRBMG0400192.
Pra Onde Você For (Wherever You Will Go)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd7f7270467977ef9e09b1e88968a23a2b0aeee7f7d217fabf84c7a6487cf9b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRBMG0300238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c041b3b347611fb9b2ceb0fef137607512822afd498c16babbeb327644a9a2. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BRBMG0300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5203d605f124c76ef76d3f29c0c61cff38d12e45c8192cb83e8de915ef0460c. 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/BRBMG0300242.
Quatro Semanas De Amor (Sealed With A Kiss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa559783ffe21227951bdeee0c498997f2b28156f037b241ee8c3f787c41886. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRBMG0300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc770de2be09c3ea933affa76d3e786cdf2d41a65c320dc6c9b0e48a3378f8a7b. 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/BRBMG0300304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a189fe8ab5fa3c12f5032918b4c0e40d57da9878b4120bfbcf36f45267f8be. 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/BRBMG0300456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb20e4b46be2a1299c720de9af121501990a8803d973753f782bd052aab82ed7. 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/BRBMG9800719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35edd091f94d17542c72041ec5c753bfb557ef156cb3b66cac5343ab0bf1388. 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/BRBMG9800718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0718b4fd90cea3cd69cbbb237bfece89f7995e8e33c8aea33624447a8e117b. 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/BRBMG0100178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c103696ae6b7aa910fa439ee3979d62fa4fd697571ab2ee8039ceb55452723d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRBMG0300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ef4d095288a6af547afaf9819162421964bd6e6ca98cee29f01876920efd69. 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/BRBMG0200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ce299cd1c641329b3a07e38bce2be42cadad485ee164fec8eb0395a40ed130. 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/BRBMG7800238.