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 0x96193fa2e2d614ea4d25de60218e9286add1ec253e7684d15a35487d750b2fbd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/165bd053-e720-4b3b-aa57-81ffa4648655.json and https://artists.proofprofile.net/proofs/artist/165bd053-e720-4b3b-aa57-81ffa4648655.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 0x1615a1a533e057a6e040e66895ecb0601d652c806d7e5a2f7e81684a96dc4561. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US7VG2490713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe211347a30bd691babcf48f42cdccddcec96e784f9ebfa6109982ed8ba7b8e36. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJZ2413300.
Geovana Sua Filha da Puta (feat. EO Teles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3a309c18cc0094b8ef42e42a5296a59c19e3253a4740242800e101ecf51497. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ESA112442903.
Depois Que Entrei Pra Boca (feat. Bruninho Astucia & Afuria o Proprio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa377fab5476e54960e60c69ae0aa39ed8da42f9d2db57df1b5bd61aeb39ab0f7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ESA112442904.
Os Cria Não Te Ama (feat. Mael da CN, BRUNINHO NO BEAT & MC Saci)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721869abe4b48368232fa0c2eba5ed0c6fe5716362d421c7e29823116efb8e5c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ESA112439564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc430a4d6f3ec4db89bc9622c136e9a1352051cf5dbed854ab6899e95e14ddf7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ESA112563638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540b992d0eec86bd4ccec302df44162486908a8ee29c22d0c14f3cd0a22b7557. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ESA112561897.
Proposta Irrecusável (feat. Mc Patinhas, Eo niel & Mc Brisola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb767b1f3f8bc30819d463b7ba5356cc84c3ce52faa9a31d98e14f66c85493828. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXP0K2402309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed54158e5882d09815cd21b31b37a21ec9cb1fb8b500cc32f64f648a6f32f2db. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXP0K2402269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb039d2348321dd1cd3f99d971f3733b44ddb5fc2acf40e34fbf3364599c18d60. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BXP0K2401989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa436ef127d3ed6f006395f6d7164fce9d07af4e36bd649d77bbdb77938064edd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNJX2585546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4d25077531e4fb27035541dbd4c47d3c5eb7fade9af5389cc91dd6bd4df45b. 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/ESA112573991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb767b1f3f8bc30819d463b7ba5356cc84c3ce52faa9a31d98e14f66c85493828. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXP0K2402309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c9b65cd34e49b7afea03c8ef0bfc8aaffb0de67a7c961a1792129d7958799c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZEQU2073014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45da59e8e2ecea085bc5992aacac38a0437a01b9b51fdd7cac727b1ec6f59606. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZEQU2121345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54104bfced94a7072f883b9fe3be7da288dd3fe043accc4d45d614cfdf31f30a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZEQU2119522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4acde8eef7bbd4ca04ff4299e94297bd21261155f5e53b5d1add5fb67f10f9e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BCXM72200297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8116c5beada277df0e6a5ea236a8562ebcbc659145679a290e1371abce6a4d1b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US7VG2469144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be3c13abe41232bf7efd0a65c93b5db42ad3c02717f79c5c4dded5f28b3d960. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US7VG2438397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1a9c82ff4a466889580804cd794c13e211ff164295aa9541de6ddc950df2ff. 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/US7VG2438415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0477ea2e4bc4e3d6b6e0c5fefbf2087bf4daa84b8c238c674363913cc08394. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US7VG2438393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d291aec698c738935605a527e1a2f846b15edb91e340588a9709bbae47ebad9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US7VG2424396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad72141b0c315f4339bb387d2890adcd1e6978e914efc7df5167d06766f0054. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US7VG2490707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3614c562d8b9aa94945c53d4504b598317ffeedef3f9fff79efffbfe847b56d6. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US7VG2491198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfec86b34080d99d96941b8d138a93a2c34149d6dffcee58d7ce7cf6977554c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US7VG2490628.