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 0x5bbdd2aac41b1ce116959d7268aaac54e8334cf900a30c769d16c0af1a7933e9. 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/b44811ed-2422-453c-a751-f82f7a866da9.json and https://artists.proofprofile.net/proofs/artist/b44811ed-2422-453c-a751-f82f7a866da9.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 0x020d7bd8f52ebeadf03bd8088252c5216c9065b975cdd2e4e46adb4687268455. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:27:02Z), 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/BRUM70600781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b9ba06e58bdc59a93ddb68bbfe32aa2990aa585088a8475c4e6b2e45579332. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/BRUM70600778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163aad02b292cf151ebda2904ccde650598eae2bc87c07f6e1a206435610746f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRUM70600777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396ace7ef9933a8bd63951f6afd50ee716274469fb0d5463b7eaafcd10f80345. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:28:26Z), 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/BRUM70600780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1b8cb478dd015e195591017552a7fec7809c7f729286cebb8f2f7ee7d8ef0d. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/BRUM70600782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0e8560a3d6463b4783109ba4a3e76c770c8acfc08b721777c079bbb60c15c3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRUM70600776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ae01ef3e2f4ccdcd9e6e5c6fe188926161858d707c3070548fe77032f3688d. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/BRUM70800616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8f8f0c690ac10af5b73e7b024043033ae0231b974c874e2a1bb9ef422ecfce. 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/BRUM70800868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3250b544887075cc600b7f3dc0755f62460e7cef00488adc821027b9c5f778. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:41:54Z), 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/QT6632575226.
Uma Chance - Ao Vivo Em São Paulo / 2007
Ao Vivo 5 Bandas De Rock (Ao Vivo Em São Paulo / 2007)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94df8328ed6a1480e5448440c1ca37ab9d4585fa37d19553b317a46a50cde12. 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/BRMSU0700044.
Tempos Depois - Ao Vivo Em São Paulo / 2007
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a15dd66a58c5f2295569a67d4caae05cae640c3ff947640345cf2aa274f12b. 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/BRMSU0700045.
O Rock Acabou - Ao Vivo Em São Paulo / 2007
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4124dd9b783a5c17915011c27482528bc9b3eedd811d35f21dac5a7d4f3cd95b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRMSU0700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8467785f9f45dae63095de396b232e1ffff22169a3295483eb38436c7d6b944. Chain 2 (Bitcoin): anchored in block 959147 (2026-07-22T15:43:44Z), 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/BRMSU0700046.
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