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 0x0f5eae2b06dd4f36a96e45e1c7312b464e87fa7b3036b978da576925988f99bb. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1e4e56b-f53e-4fb1-b820-0d970b5ecb9b.json and https://artists.proofprofile.net/proofs/artist/a1e4e56b-f53e-4fb1-b820-0d970b5ecb9b.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 0x1ef2363cad0c66c14a7d690bc5f9cd5b438762c7a618ea7b9f65bd1600d73d5a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BXX6P1900120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea726ab0fc28443e93e96a396491fc77e599e3b7c447167a5eb7668eb3b89f6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/NLRD52407891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17f6ca15da4527e72695a5108cf30d01b02b62296de6c7ec596a682f3131048. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BXX6P1900124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04635868a4fbc694090b1bf2186799a5f1e9ee1d020cdd4de19e9f622ee30c4. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/BXX6P1900127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2dbebd6976b4accb9a652e462db5de8703c076be669001231b446975858e1d. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/BXX6P1900131.
Praça Frei Liberato-Itiquira-MT; Vol, 17
Mudanças Com Participação-Rondonópolis-MT: Vol. 18
Navegando O Rio Paraguai-Cáceres-MT: Vol. 20
Barão de Melgaço-Pantanal Mato-Grossense: Vol. 21
25 Anos Dedicados A Valorização Da Cultura: Vol. 8
Pérolas Do Cancioneiro Mato-Grossense: Vol. 9
Resgatando, Integrando e Dançando: Vol. 10
João Manoel de Mato Grosso Interpreta Cuiabá 300 Anos: Vol, 22