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 0x01a5c9a3aea7c60b0ced050cf712e4b57fda023b704859a823d604d0f68caa58. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c57a11e-855e-478b-9a36-fb3bdbef56b4.json and https://artists.proofprofile.net/proofs/artist/6c57a11e-855e-478b-9a36-fb3bdbef56b4.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 0x029822a993d9abbde01271ad824d73afb67e3b416ace66a0469e90e3d42a83c1. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/BXEI91800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6723701cb70a8cdcf92d9fc9db5f9feabb39bc7cde053116e34c9cbec3203e68. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRLOZ1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20650ec52c69feef12a4b92201ca266903cd04196da2c6a4501455dd5f45d9dc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRUKM2000001.
Comidinha Da Vovó (feat. Antônio, José & Matheus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfb693603c5da12faeb53fdc307ed4450b952e0fe99c3a259681ce2b68e0ea1. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/BCZAM2100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0048d54a28cf8c1e49653aa1dced86ea50944fd2e77abe7c7d49e12ce853cf30. 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/BRLOZ2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde17fd9c64b0737b533154dc814cb27390f9dd49c08106752f0ccf53e7de6a1. 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/BRLOZ2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96200f83c613579eb3be0b27e06ef3636e32f61ab4dc0268827d44fc548c5b4. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BRLOZ2100006.
Surra de Flores / Amigo Apaixonado (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb57203d4e69aa134972b0ea82ab9f89dba53c3adf8c15caa96502b0908d746e. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/BRLOZ2100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1357e3428ad767091be4974274a4612316523b65bc8991fc959c93494555c91. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/BRLOZ2100038.
Me Segurou / Lembranças De Amor (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1633cde32e28689ed1659fe239779829ef16c6919386fb0c8691a63a3aceb3. 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/BRLOZ2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f89a345b3718ad202185dbd3e8f0aff18ec5e46d4749c9b951e0abc6741aa9d. 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/BRLOZ2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf306390015b77995012ffa283cb965654b9c8c126b8e742e26e8f3ff7a4f79bc. 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/BRLOZ2100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1357e3428ad767091be4974274a4612316523b65bc8991fc959c93494555c91. 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/BRLOZ2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1cf377231c16976ac98ca8040cf57c672b361eca4393beb06008e590b982c5. 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/BRLOZ2100031.