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 0x949d780cea492bcd909475093d908c43d4ebd54d506937dfdabadb2870c31a25. 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/f851c9a5-53de-4872-919a-1bac37e3df03.json and https://artists.proofprofile.net/proofs/artist/f851c9a5-53de-4872-919a-1bac37e3df03.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 0x5412f868b582c633608b21095d9bac1d7f4b9b79e6eee219ef1227019d9672b1. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/BRAMD0001395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277140b5b77575fa48784142af4f6774fe3f42c6803196732caa29fbb57d043e. 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/BRAMD0001396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb77b3f319ea5311e124de43192d9f1779e3491671be1b39b2d6e8d7340d9d2. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:54:07Z), 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/BRAMD0001398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ea3587114e871ad39818ef20463693395c0d03a2c4f59973e755aff68660af. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRAMD0001404.
Pot Pourri: Abra a Porta Mariquinha (A Resposta da Mariquinha) - Maria Chiquinha - Vamo Pulá!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc7496a32f932e2a8b9b11f52f94d18911061fd880c324044be4092b7329e1a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BRAMD0100768.
Pot Pourri: Os Dedinhos - Festa Dos Insetos (A Pulga e o Percevejo) - Pintinho Amarelinho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236abe95e40ed368ab4986b0427d2917172cacff4e23d2e139f76a3f751c998d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BRAMD0100771.
Pot Pourri: Doce Mel (Bom Estar Com Você): Libera Geral: Ilariê
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620ec4889871c929c5004251fb9173885cafb3bfe1936dd1fb8879079dbc2859. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRAMD0100773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d75ebfa5e049e661fc7121ee593d438a73f4116d65a0ec4293a93bfe6febf4. 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/BRAMD0100775.