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 0x959cb90b8316846e29f04b0597b8bf81c3115b1cb07230c7299549e338e46ef2. 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/739b92b0-2ed1-4435-9924-802f1696796b.json and https://artists.proofprofile.net/proofs/artist/739b92b0-2ed1-4435-9924-802f1696796b.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 0x969622f47156c8257c98fc9833b8e5b13c6d97edd58f5e8000aa5a23b4f9f398. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:53:32Z), 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/BRMVP0302949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597100fbc925d7040c927b97df61044e7de2445b9e45f10316bf01b8ad2cb109. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/BRMVP0302950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4859839b4a3da2ea22a5ec03843bf46a725c688171104f8acb2189ffbc4c54. 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/BRMVP0302951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a546dd07ad4b7f207dffec1efc2a834287624c4ada5bd8e31ac2bf477a1e43c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/BRMVP0302952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5d0fc2520b8779f4ab13c0751a994be84e2851b3cfc847c37eb68ba5b2f42d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/BRMVP0302953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d501dc52468b6e32421723e604009173114f1b4ca6b5eb31f0a4ddbc3217f4. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/BRMVP0302956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484b7b2319f6464493b82c59c790a18cb201529c1ec650e0a49ca8ffe8464a4e. 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/BRMVP0302960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46dab26e4c0047ce9361b16544aaaa1d8d56013a8a9f54fafb88a93eea37425. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BRMVP0302965.
Pot-Pourri: As Rosas Não Falam / Ronda - Tanta Voglia Di Lei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5375a7c9f9d647959d2afb1fc566a01cfa47f4b08fa0a5cd28ceb700fe53d4. 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/BRMVP0401139.
Nos Tempos De Ernesto Nazareth E Zequinha De Abreu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ecb2386bb55949b4d496f98acfa8c436083064b67765553e57d2d1bae8a74d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRMVP0600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba1471ce89cb1fc4c7581881a41733678ef923062dc4f1d0c63411f82d9a6aa. 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/BRMVP0201771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2300132aa23491f4901ba7aa948e86a7e186b9cfd821f064dac68894217b76f. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/BRMVP0201774.
Nos Tempos de Ernesto Nazareth e Zequinha de Abreu
Coleção 20 Super Sucesssos: Waldir Silva
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd488dddbbbdcef26e66dbcfbc9b5eace4a9f2637531efc228c5e69a6c135ac0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:00:04Z), 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/BRI9C0900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb6ea4909d78b620b815ac39ebc3331b4f9d9e1050056fa91eef2b66281bbbd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/BRVWD1300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35aea33bf6fd5016691aeb0cca568eb23951cbcb873e8ffed360ac0b3b4e4f71. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:39:54Z), 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/BRBGC0600411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613eb371e2294d2041c1d2590f198dc8965b0e5a3523cbe11b351655502f9783. 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/BRBGC0600894.