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 0x62f83e4f8865491a07ffe7ae9c6d70d6a3b71e11c8458c450e56fcb1b973f90b. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01749e1d-0666-4141-af5f-3c247f51088f.json and https://artists.proofprofile.net/proofs/artist/01749e1d-0666-4141-af5f-3c247f51088f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
De Sophia (Edição comemorativa de 100 anos)
Circo de Feras (feat. Mafalda Sacchetti)
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 0xf3234513fde9d5be532a461a9eceff312a0fd38688c3097d0893d45f67bafbc9. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:05:40Z), 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/GBMA22472467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b64117f35eddeb8efcb452129b159c7041d23d6d917eb10ceac0373a6f4b2e8. 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/PT7HZ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48511ca6844ff5d77c4cd602dd25e6cda74108194f4ffc4e22b488f99505fce. 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/PT7HZ2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfbd7829b1b9baab33180017a808a6b4531ae286a226b5a89f2f3c599353943. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/PT7HZ2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab46951893ee362482b51320ac9453270ec61d363832d95a1cffcf8181d31e66. 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/PT7HZ2400004.