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 0x23e2cb61432f5f25d428b5f7b188d3f4ef7a09c6f6bad1c1b8c7166545455a78. 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/39ac1170-0d91-4027-acc5-377748444e18.json and https://artists.proofprofile.net/proofs/artist/39ac1170-0d91-4027-acc5-377748444e18.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Forró do Millennium, Vol. 11 (Ao Vivo)
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 0x85bb66db309672620d9271738ec92f037bf74804213db5cc763c64bc3b139ef7. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZNJV2196704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987c531fd7a820b18ff4c5e85271549c582d7a2dcd4f9fddaf453592e434016c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNJV2197199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0dc37ac9937745e4564a57f0a50fc586488ed366c9e5bbcf223b88d02a2d9d2. 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/QZNJV2197071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0bab7641eaac34b55cb3de43f808d4f0cbb6767513af955947de05146969a8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNJV2196923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94253e4583386e471ed05fedb7d10d6f10f62269d64967118933393784f7f2f6. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZNJV2196931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06aebd48bdd78b6fe9750524f0e6e153629c32ab7a717da0ee956987e4d65d5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNJV2197331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ebf3106627ed0d7250a9cdd4db13648daab7a4af53b240b8a11582ac7de134. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/QZNJV2197333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2d51cf8496df79e5885c377af6310a90a8a6d4ecdd28f4df6defdbec75914f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/BC5VE2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097e2903bdc12161bc1e79950df1867f23ab2177da096711ca349558f2686e8d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNJV2197334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4744160627327625d4c9d4c257414b08ce37a5feb9ea776c9ab2de3a6fa5234a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJV2197335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec5b7821545747425a9c9a540f454eeb2d6a8d8eb4a34df4c6d5a4ec25e1620. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJV2197341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf963f58aa254730e8e31af63fbd6b1a57389708401671fa0270a4d9f74dc74. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNJV2197342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab5486959fc70fe20fc8f3b06f6e4af5d1a7d49083b555751a501b055b452b6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNJV2197343.
Como Esquecer - 28 Anos de História (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87632efc77d4acac5290d3856082aec065dce5ebff73deb3ebef5f057a1d5128. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTVM2297685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f50ba474e7e7839de107859b2567f763c9f6c40643798ecff3852c7b0b67b03. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZTVM2297686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2491ea5db3be93c18898eb02f299694f31b4614afd22163afdf2b8273183f61. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZTVM2297687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a370d8ca6af3194b2617dc765387252199565223151137db357bdf91e21f0b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTVM2297689.
Olhinhos de Fogueira / Cometa Mambembe / Gemedeira / Frevo Mulher (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8401554822fb5c3d16fb12037e3c1c446eb93c803bdd8274ae5c13147fcd02d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZW9K2309925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3aeec45477fe346ac42d4322afe364598e128fa538685066500de103319544. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZNJW2449651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefea6332cfcac135df4f7dede92a69e1b94a6b790a4e11a94294b0ea21f1d2a8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZW9K2426246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a54d5beb9096feeedbe36ba3f2eba3386e507f768afb762eac0b4b7e026d10. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZW9L2442875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390190049dd885bd535a3c8d3e2b204aeedeb2b66b743540f72bc9ed255bceff. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZW9M2405148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2c393fe59cd613352beadeb88a9f7c06504238da2524c880f136268eda1f18. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZGLS2566859.