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 0xe71aa1f9765965f186c07d681e3fbc8aa627ff4368ed1977e1b3f2707ecb4029. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de03e9f2-3479-42dd-9164-73d65f41f801.json and https://artists.proofprofile.net/proofs/artist/de03e9f2-3479-42dd-9164-73d65f41f801.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 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 0x4a1afae158928bcbd88e9446f0e1dbca12bf60e2b35cfa8ab58f061b3e271672. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/US7VG1711632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a642e848037295fa7aaa5985cff5a8d6feca6d1d5b50ba4d2ea23d496ee1a63. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/US7VG1711633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfe033e6f0ec25ae8998d540b8164d98103c58bb77598c5953f79cccad251d2. 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/FR6V82546864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e5187c206823f21fcf081c83b8131b38490a38171a62d38c45d2df652e2600. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/FR6V82299118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d044d12b9ac33614c5bcbbc50a19b7de4535df6e86dfc8a6d728d5fdef4929. 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/FR6V82299119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151aad0fb5a5796e30e18eb9bc8da37762d8bf56698607082627dbfc44ac3db8. 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/FR6V82299120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4d62ceb417e0c71e5ac467e2a929306211a6eae87d791f74f6c8f94061799d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FR6V82299124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11db0ac5310b64be27fccff80a05e4da492a978952527e97b35de7c798d47ce3. 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/BRQOU1300611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35894bb1d9c1c4ca1650da22089a11a5b9630be1ac1158979fa70862d9a72f3b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRQOU1300612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502ee1aa8c12c7375f855799d82fb0c9701cbf527d04550a0132f1049d9f1930. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BRQOU1300621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c93bc283e9f7334bfac1ad032624a43befb33ebe121b774b0dfbe1de305363. 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/BRQOU1300619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ec7355447d9f5e26e10b44ed9e68839dd8e22e139d0fc4dcb02189a210b2e3. 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/BRQOU1300620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e1c824ed86ec1f8893c0cb721fd2ae39a36114257a42c833da53a50329d39f. 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/FR96X2378484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3594243e2186ec73929b0d53baa0b44d4375d235e70b441718051e6fb79ad5c9. 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/BXSS92000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccea685d063e0b36f285606e49ba15d64ede35334763760a812189d8c6153cc. 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/BXSS92000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba36db86d2148646aa3e304fa737034494bf0b67ed1c04d14225feaf9860f1b5. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USANG1928429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67475fe708ac3a5d984f931d23c546860207ecfb9e1344a06190b00ee5e585a8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BXTEP1500005.
Festinha Particular (feat. Bruninho & Davi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f897a181ac7047d3cb70e53106e520a2a1695e16ac28b85e833ce12ef3076b6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X2385493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e2e2c4c51e9e4e8e346231df4ab0a8c22bbf7fe9f1415a2d883a7fc490f965. 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/FR96X2385494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae1ccbe0945d4ef990c162862e41e7f123191117ede0121b707b2745b78f4a3. 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/FR96X2385495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048cd5b7198f3f2f1d125886736e7fa6b1f65a7a0786fdbf57ba65d40c8c1664. 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/FR96X2385496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65056dd996ee4d6b05c4da6a013ef726676e4cecf0e2fa59302dcb8fce98a7e6. 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/BXWIJ2000023.