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 0x3da6c6e3b82f8344fea7bc454b7e5f349b6ad8868b6874d6fc6706046492db9a. 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/a9115626-31d8-4112-9cf0-546795189dcb.json and https://artists.proofprofile.net/proofs/artist/a9115626-31d8-4112-9cf0-546795189dcb.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 0x54351e09f33d34252938b086d6ddbb5ad897f8892ceb412f4ee59971f4bab0b0. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZEQU1904961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ad6b2f69deea38ca63af3d5ef817cdb60ca76a5c8e2b4ba0781c34489247f4. 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/QZEQU1904963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfec83c0d6c1a139d099625aeebb4d74695eaaf986561b192d92f0653c8d0525. 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/QZEQU1904964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf101acb3f131ef4ea2a8b54e25b294a1039708db32521985c5ce05b0efeaea57. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QZEQU1904965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcb5a07e1d3ea4c50aeba1267d5059e45d445d294e48d5dfe76a033ea6cabac. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZEQU1904966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caa9b1be8315dc1283b9a39d1094a54a1f583826c0264f7495a5bd40eced37a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZEQU1904967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa709755536d8b411dd01fcaa844f42ff4af6709fedb989193ec53dc0988d61c4. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZEQU1904968.
Nao Me Deixe Só / Sonho de Amor / Sonho a Dois
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab75548dc095d0e8744f291f56bc4982f9a9ff5234b67819ce661dbe4b8b8d07. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZEQU1904969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f974553215ec62ba077d06b7186313624cc40ce7728c02c49135a92d65fc426. 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/QZEQU1904970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881ddd82e74050d9f535ee3391946a36ab952d94df6c5f4a0803251d3be292f1. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZEQU1909501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92de542e5ef48cfbe0687dbe6dfe935ccda8906b294c957a5d6494de3cfd474. 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/QZEQU1904971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5288ce1974907fe91dca2f867b62eab09d64407954a969d59ebc9e3a0490d6be. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZEQU1904972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220e1506b5a7c2c90a661156d445c18c1c105f2b4db7db4917292ec1f87ed2fc. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QZEQU1904973.
Pout Pourri: Sem Você Nada é Bonito / 12 Horas Sem Te Ver
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356019ff4eabbffcf776dc7481e2e0b9980f47fd41db8283c62b66cccd59ea35. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/BRCVF1900007.
Pout Pourri: Nas Ondas do Rádio / Gaivota Voa - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d52adbafb167ba45008ff89bd62adc82b6ede2810008d7b2d5412b9afcfb15. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZEQU2211756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363fd4aea221243c6438d390e79589fa3d17d6951be289ccd231ba733e0ff9a5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZEQU1910414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13699ba061703ccef436a91e518aae641a9606c344a14427bb2023591b553740. 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/QZEQU2076914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43858cd35bb032b6cb61ed42b09659de2c05fff74b6c322475f712b3e1d9b7cb. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZEQU2076917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75816523e4a4d9ad6c71cd4eb0a3409a828699664e426bf74a0827201b872da. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BRCVF2200001.