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 0x431751312a792e973c3a6cd36face7ea30536f67a8e448c550c1f46415223bee. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4aaf15a-de1c-4d49-bdff-0e03caafff1c.json and https://artists.proofprofile.net/proofs/artist/d4aaf15a-de1c-4d49-bdff-0e03caafff1c.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 0xd60f6a26b9d0fbe72ecc684aa0913a6119b3f1dbedf571fb026d7ac63be2ae10. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:00:56Z), 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/QZZ7U2497737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14354d495e4c76d9ac4d99e46b666420b7b81ef3c82c86cde7913dd5f487791. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:35:32Z), 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/QZZ7X2463639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd862beee5a1cd1e46a37c47999721f6e2f155d37e9035b7fac60d28400bcc113. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZZ7X2463640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb15af40502b6d481a0bd58b1f6a3161aab711021c027ce7d2a46c0600230c3. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:22:37Z), 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/QZZ7X2463641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93815ed934ec2f41c7be197397e6d5e3404b30e541f0b991d99d475da7cbcb09. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZZ7X2463644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3d37f7b328db71158d64beda2a16d2b3ef1f2d20d5943c731e07084562d610. 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/QZZ7X2463645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c09e69ab7d69cdbce0d6508a772453785f594e6cf128fe5505032083912033. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7X2463646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a57d694ec0802bfd6e179d482b5a6d1d9e5813b996602d54f2627df3c7850a. 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/QZZ7X2463647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6044f3923e72b87e94b4c779815e284552686a188fa2f1468e801c99be4f9ba2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ7X2463650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cd355125075184ff305e00cc0b3d1e41628dbc0d1de861cd7ba03921312e17. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:46:11Z), 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/QZNWU2537613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74adf7a6260b9da8b7b779634df2f37679ed2686f843c601eb7a83507799522. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:02:35Z), 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/QZNWU2537615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae35b009bd71e526b560840cda929d801fa53671ab74264bdf0132157271db0f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWU2537617.
pot-pourri: Entregador de Flor/ Mentes tão bem/ Você é a dona do meu coração
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c87181e14c0293bd8dca0dddff808a29cbf439fb5dd9c1e91794e6128d2a1c6. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:46:51Z), 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/QZNWU2537619.
Jero Neto Ao Vivo no Seu Francisco (Ao vivo)
Pot-pourri : Nanana / Por ti / Mesmo Longe / Mordida de Amor - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41523740ef818d8c469d10d5c8af74350d385b9e99e508e1b27fd3b6408c12e2. 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/QZTAX2550563.
Pot-pourri : Tava Até Doce / Lambadão / Popozuda do Amor / Te Amar nas Estrelas - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb5ebe610b172b918c8c81d112438c88138c8997d773785b71e0a6f7bd36d96. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTAX2550564.
Pot-pourri : Proibido Terminar / Entregador de Flor / Mentes tão bem / Tubarões - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5941d23c90b15f1ec7e60cc767a39414fe23aa03237f4fc46b729d6a26cf263. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTAX2550565.
Pot-pourri : Cheia de Manias / Desafio / Dança Da Cordinha / Dança / Da Mãozinha / Tá Escrito / Arerê / Levada Louca - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4398e889e40c5206d5fd3db72681a715796d8f81aa1987bb5b55def8e339c67e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZTAX2550566.
Pot-pourri : Igrejinha Azul / Pintura íntima / Irmão da Lua / Como Eu Quero / Caça e Caçador / Cicatrizes - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afe8f6f680d45cfc6390a1fb231076cb95601825af3e5f9aba8daffc6d7ce53. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZTAX2550567.
Pot-pourri : Vou Pedir as Estrelas / Aviãozinho / Menina Toma / Tava Até Doce / Bumbum no chão / Então Beije a Minha Boca / Nanana - Ao vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4eb8d017bfd05a7fb4130dc8fd66a8df8ec301f96ff3a0d85419e7f91d49e75. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTAX2550568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56fd2bdf4ffbdfbc25d74e3521cf96104a18d1d9e0df28747f70da000cc2e02. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QT3FA2573080.