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 0xdb22f184915b37e0de0cc907ee2867dae826f2a68524887d03cfd3e0e331feb5. 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/e6cf377a-4fe2-4866-8a8f-117ad0182aff.json and https://artists.proofprofile.net/proofs/artist/e6cf377a-4fe2-4866-8a8f-117ad0182aff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Um Degrau na Escada / Coração Está em Pedaços
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 0xdae5736758a255a404acd18b0f6eaabd5d71da0149737798bf1fde2edd1f19d3. 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/QZMZ92510861.
Coração na Contra Mão / Andorinha Machucada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a92bd5dcb8aed4261a2d722c3144f3d36b38a4a13fed465ebc2e01fee1f4fd4. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZMZ92510957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e75eeb9b0f39eabd6fee5f42bc23bbc971f11e4e26ff5158f2ee0a6cb57f952. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QZMZ92510812.
Boate Azul / Ainda Ontem Chorei de Saudade
Minha Serenata / Do Outro Lado da Cidade
Essa História Eu Conheço / Te Amar Foi Ilusão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35d2351269383cb3d38acd9ce32f177e24892251140ac688daee60a273241a7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMZ92510911.
Na Hora H / Dou a Vida por um Beijo - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85258446a46090f20853cf062b4476b2def01f6d504568166d7f0a91fc0e297c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNJW2541745.
Não Tenha Dúvida / Temporal de Amor - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd77204d45f81b6a9b5f51b48a8d16e51f44c496701b8d4791865befe520246. 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/QZNJW2541746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f303e4722db1889dc3962a7fec5e611afb326e78093a5675528f72b6a717fd2. 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/QZNJW2541747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602b6499ff9aaabdda5510d8b6aa149e2e016c1f808ea6501679ee911c10b754. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNJV2587622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab80fe9e149a363f88f480f55b0ded822cff3fc98a08cebdb8388dab30442b5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNJV2587620.
Vontade Dividida / Sonhei Com Você - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b4a5349ffa50205dd9f869e62aeb3d7b91789e6f33c4835016294cccf93977. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNJV2587624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602b6499ff9aaabdda5510d8b6aa149e2e016c1f808ea6501679ee911c10b754. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNJV2587622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab80fe9e149a363f88f480f55b0ded822cff3fc98a08cebdb8388dab30442b5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNJV2587620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b4a5349ffa50205dd9f869e62aeb3d7b91789e6f33c4835016294cccf93977. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/QZNJV2587624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ad1b93e00010e40e7f797fab9f60c16ccf766e34cec07e2c60289d113e1549. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNJV2587621.