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 0x56a3e3f551ab1bde2044a753e282e6d13e13c533136291498981c235c31101ac. 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/4b033cee-7142-454b-a0d0-31b14a459399.json and https://artists.proofprofile.net/proofs/artist/4b033cee-7142-454b-a0d0-31b14a459399.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 0x6753381fec685cde5741591085f79790269ac7b679ea1abb35eb437d274c7bc8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BXZ191800002.
Guia Prático para Amar de Novo Pt. 1 (Acústico)
Guia Prático para Amar de Novo, Part 1 (Acústico)
Guia Prático para Amar (De Novo), Pt. 1 [Acústico]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065993672481886dd08ede0d889c4adb7b6bf4b6761a0b24ba72fe00032f95da. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/BXZ191800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32e7c6acb98a188500c800d4588d2f07fb9d8c4ced0356d909335c7e855c5f9. 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/BXZ191800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c92b360d708bb49446e2ec88333a61478d9d44fe11d73da002f727c4b2b167. 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/BXZ191800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0bb3028758546d1cf6b154f51ee83a1e077b89fe92a195609dfdd6fd83f350. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/BXZ191800012.
Guia Prático para Amar de Novo, Pt. 2 (Acústico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706c45fff4e83f2e4e02ddf5b64f64a7a0bc0011aeb139760818ac0011c741a8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BXZ191900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10cab59913083849e54cee997fbf99fce80de424266475facb0e345967afa8e. 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/BXZ192000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f7c2b502a7f6730ab78c76bb31b83bb015d63af8aea85913323940c85fdb26. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BXW0X2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604c7b9c962afc279ae278197bed29ca5e257e00a56d74e5682001c1fd2d56b8. 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/BXZ192000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57f8156a71db9e16080e661ef386cc16edb371b42913620186eb31ea52b4eb0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/BXZ192000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93bfdacd7539222d4ad217faa60ec2925cfbc19bc9e862cd01ebe34e9e19906. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BXZ192200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d2558558f449e086d6b47132d3de1a4976a52dc8dbc32a0a94fa113e00928b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/US7VG2332861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c9d0b101b30ea5ee06b3bed2c1f8faa5b98665d22370284b73d7c9572141d0. 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/US7VG2332862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175279873f84131fba9d9c3cb0e2d17f8ee4c11c7b3f8e130c90745a1c4021b3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BXZ192300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b590144194e173e89755c1fbb73b6795551718a7980e93971f3d907b797b7a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/BXZ192300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd516436d0e781a09170bb04ff571796d214bc2f0c9c926a3dd0d0ccb283aca1f. 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/BCKON2100022.