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 0x50ab11c07ab457c5aeaf45013ad7af2a6b29137631d23ead8a8237885cd3ebbe. 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/ec857d70-55f1-4c97-8201-4a74a0beeb79.json and https://artists.proofprofile.net/proofs/artist/ec857d70-55f1-4c97-8201-4a74a0beeb79.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 0x86b857a62aafe832295f54198392677ab389e91c4512f6cef26fb74517434698. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/BRUSA1900266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f3476abcba2fcd10d40e3c8e079b04c6dd0fad425de610ded24e653c1dd192. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BRUSA0400691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfe4070bc100cd4f2f79d24142ff687d108e7a20ec148a88afdc50934b82d86. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRUSA0700760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad26bd95c26479bb8eb67b17e4a7ae68e8a4fd9ea989aa9d84de16a479932f5. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/BRUSA0401342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6b3f2c0c21e2e9038e4687055c4aa6736cc35440c1d3c6a391b4b18f6523bc. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BRUSA0401331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b21f974bc9df53a00876597fff1a2f7a36d97e346d0dcabdcebd443e6327b8. 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/BRUSA0400695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0bf817ba405ebc234837f2ae1b2a45d1926c9eb6f8138470ab9efb5b25ed17. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BRUSA0401373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde925c90c570388ead7ba8c618537f70741d72fd963ac4e34d23409d4936cf7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/BRUSA0400693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390a2e43b1d85aec9507975b9d45b065e415cf7df0eef9609d4f8acce80dbb0d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/BRUSA0400696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e15deb6a72d871c3eaf5d1d79069fad630f36a76d3e0474f1e0f8331fa684d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRUSA0400697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2d74eddebb1ec2eec85f192a9ad288d4ac6fac5a7c886fd67db6271844ed17. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRUSA0401383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0bf817ba405ebc234837f2ae1b2a45d1926c9eb6f8138470ab9efb5b25ed17. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BRUSA0401373.
As Pérolas da Nativa FM: Santa Marìa e Alegrete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb050bde0258723053b2b25721ab1a545c5933491647d68412ce2f09af0fc2bca. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/BRUSA1701197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afbd38a686d5271eec185f0cd14e7e3090da5a1c5df06166bca55f7d96a995e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRUSA0401341.
Carijo, Pampa e Poesia - As Melhores do Carijo : A Música Com Sabor de Mate Novo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624084a48989fe422d84d6bc02ecfe781fe1d9e339cf8fbb17ce7f24752a2e46. 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/BRTMV2001010.
CALIFÓRNIA DA CANÇÃO NATIVA DO RIO GRANDE DO SUL: OS MAIORES SUCESSOS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099d3e06caa0a7972d19a48da8fb26057cc774c724bccca01272bc42aff53e46. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/BRUSA0400418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11f2475bc151fcebaffd5917d957c098bd6e671e3633266f60786a50b97eff6. 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/BRUSA0300622.