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 0xa1c6e5ce3826d1ad6d01d2f8cb207793a58c9a296beb80e64347e3382331d597. 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/3f8cc66a-3f13-49c5-b2ec-4408ebdb7557.json and https://artists.proofprofile.net/proofs/artist/3f8cc66a-3f13-49c5-b2ec-4408ebdb7557.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 0x622eca32dd6af8a9874f3c5a45e4f2d1e27f0967b0b352a21fc03d18459aa1ba. 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/QZEQU2046923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6069c8be130307b05e4212961fb8c5dd4a39911d7d30476c498f1e870c2ed9c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZEQU2104766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9003b851411b9b99ff53adbacd27de4a77aaa0f3a434f48bfddf86707f6a3f. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZEQU2128933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee53db725daabe464a21f1e8830c16a4d4bcec179d9ab6cd5e42f52654cb5be. 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/QZEQU2128983.
Bonde da Meia Meia, Porte da 40 (feat. Mc Mika) [Remix]
Se Quer Botar Bota Direito (feat. Renatinha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a2559689f03788baf9c2f72a69e3d49fd1207483f5781b22b3fce0ec4e4375. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZEQU2149815.
O Tbt Que Ele Quer É Claro Que Pode Ser Postado (feat. Mc Maya)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3df7b13a9ceedca12ac5ada78aaae1020fc70f9ba904fcc0f0e1c4a1c591d1f. 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/QZEQU2149816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8043c5ca2622c3f6c7628ded1feff9dfaa285e5768558d645c41bc92428640b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZEQU2207386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cba4cdeb36764a34d71c48dd2f57043827c20d3acf62316a959e03ef1465dbe. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZEQU2213440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a22acbef8971cc1f541cb298f2ab97507eaac8a84e02412aad2c8465f569f3c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCDQ72200006.
Me Apaixonei no Vagabundo (Arrochadeira)
Pit bull na Cama (feat. Mc Nahara & Mt Records)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa37e19dac811dadd161b1f33b1e243b7255528799c7c157d674b5c1c4b2b83e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:21:17Z), 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/QZEQU2254836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c54cd00957d66b9fff587de3d7684c2baf81fe7abe888e16991f239a505274e. 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/QZEQU2258093.
Sexta Feira Qual É a Boa (feat. Mc Rodrigo do CN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6c1db2d789d575102c211e975ffe3644d5a97114e9dfac01b0f830ca88846c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:14:47Z), 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/ES56F2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b80b4835bab350d2d472228e8411ca302ca8d5a9d9568a21342f7dcfe658af1. 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/QZW9K2409792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b90a69e6474d578fcd16dc26ffcd228a7fe64378b85b75c4ca951b3faab006f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZW9K2409793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3358430ece2de74abde3cd838659499ca886d8a4476134141ccb1c77dba0ef9a. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/US7VG2512737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9677f9f2b3adf2b08aff4fbfc793ee81f4b579ae9fe7b2d0046c302599b6a5f0. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ES56F2500176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38bd6b2da6b8050f32f852bc0ad2cdbb737a6f4001b5ab2898a08c6b924e78e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:28Z), 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/ES56F2500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34873b838fd24342032e23dbdfc73162c01c9de807ff931a8c38e5f928d065b. 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/ES56F2500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2b2288461f5ddd8fc36c68bef3ec4b52ad7dc68d3cf15648847e153c7e3894. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJW2574227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fefae4d7942c14658df44ac6c1ae140d03434adc83c233076af527cffc477b2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:10:17Z), 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/QZNJW2574230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c3c993bf3beeb868079e1c82db1e070980c8fcc39d8cb743709c263cd170cb. 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/QZNJW2574231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77593f9eab6480e8423f7da3a898dbc49ec9248d2318a71abeb8c0ecb77175d6. 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/QZNJW2574232.