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 0x4aac8937a058d147d1941c9c1a15bcc3a94f0b49c31b40581fbc8245f3538b0c. 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/5fc1b50d-5534-437d-9752-90f081cf2c19.json and https://artists.proofprofile.net/proofs/artist/5fc1b50d-5534-437d-9752-90f081cf2c19.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 0xa3c6327187741839b671b10f4a5c93c789d6e92787e05f4d978ce5fe668d862d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZ5AB2449275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d54e6222f2f992f7f7ad60fd6446df8192975dd6019224011230075ad00427. 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/QZGLS2450117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26313dc77d5f2ce4b054ba4534626e6c8ce921ef0152bbc21c3a4742881c6012. 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/QZGLM2422251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2357c1704f9a37b95bc4fc6b3a04cd32289a0f63cbb4902f7dfe6ec0a8a012a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ESA112571547.
O Melhor do Forró 2020 - Lançamento Tranzatape
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476488762da72a8592ba8b37832ef81a25248322c96f15438d4522b6f19bbe7f. 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/BXP0K2500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87ec26c845ee48c22de9b95d5beecb2c9d04a9dc452ed4baf64e0b96d7ee943. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/ES22F2500129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ef8cd8b8ff419592d91fb973b43f90217bc3e3b8f4f4137bfd6a8bbd1b69a8. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/ESA112571549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf2f20fa3ad0911cf6d18da6af61df4d9847efaf9feeaecf30ab7fb24a5eaf2. 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/ESA112571151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e6c4f48f4fee4ac494f773525e4403fb2df07e90ab222122ff9629359768eb. 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/ESA112569655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d04e645cfae90ac0e3feff395998f02862594cee08c57d5c899cd039dfccca. 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/US7VG2505683.
Segura a Revolta (feat. Mc Fantaxma & Mc Vitinho JB)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e223f3cb1fd63055e61bc4fb199ee5c3542c7e4b246c3f5a516213db4461a00. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ESA112456919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bc2730a3a058cad264635e9d2fd79b158f64352450b503caaeb924db530044. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZNJZ2421133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567efdda26550631e7960c489bc7980e263a05bf73faf317d33b42cb2c9b0a5c. 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/ESA112326447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f3eb2076e5eca6379fe518d0652c399cee1b420ac1dc42d7828b11dad09e15. 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/QZTPX2381624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1f3019c96ddd2451bf7ab9948dbda61e600386a67e73932a3d31f57cd04636. 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/QZNJZ2377817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4575fcaf7396e721e6abbc2238905c53c047b6fb0be73a83f7eb568fd24166. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZW9N2268236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a2902b139cae105902c17459f4df3530daec2931385ed02a0b0e9916830569. 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/QZW9M2298039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47be2cacc4c5d21f50e21c9058dcc163d33dffe5b0ff1ce3a23159d56d2fdc31. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZW9M2290067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00a4bccd7d0edbcdb304746f20bf1a7d928878e5a06cbb7c6ec7f43dcb11d83. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHZ41909299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2222151fcfae9b5132ea4105d925928ca1b43eaddb2482efcf86123d26cb7cd9. 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/QZMZ92228106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc91c6dec5fef6a23e3480ec3f50a85d5d3570eeaadea73b2588a1ccd5c9db65. 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/QZEQU2035502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc893b5a3501ad5056150cea522f8771eeca12d450da8db6490a5d616501052. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/BCJ5L2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db5c382a4e788c2a20108435498639bbe49f5986b8b1c0cf0ece837334f5753. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BXP0K2500210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ff82dd3d7507244324a19cf4e0116479b39c708bf8a0976a7b064b49b732a1. 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/BXP0K2500183.