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 0xc207da62cb950e80acddf2d6276b3b263f4b6ae561fc37739ba5cb019ec19314. 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/eae40324-f723-4729-bd56-4ad0f563c63d.json and https://artists.proofprofile.net/proofs/artist/eae40324-f723-4729-bd56-4ad0f563c63d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Alto do Cruzeiro e no Quintal da Minha Casa (Ao Vivo)
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 0x1ea31f8b2754778281492b6fc0ca6c315ba35679f736f1fc431df5dd2ab345b9. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/BXY8V2000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88017325522848e947904198fa8b2898e152ddfd0889b9992c3fccad4f8d097. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/BXY8V2000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b906695086f42d33f973ca72d69302cc6c8591ccaa10fde642d7490dec5cfd. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/BXY8V2000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164dc2fd607efb97543642d2492e77129cad64a72d528c3a8d7d2d6b9e996c1d. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/BXY8V2000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2fb2b39662bb3aa5999587366c30e72d3bf609e0a30a65d478554be93cf629. 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/BXY8V2000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8934c995d6c1b1350a45c64a71363f683f405d77df471bd37d8fca5fce8123. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/BXY8V2000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dae2b8407dee0c222abb37b8dc33947fbfd74745a544658e638f91d3946d48c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BXY8V2000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cfe8aa19003ab36cc6df19b8cdbd0a75b17e57312681bf15a80521f7db8a4a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BXY8V2000053.
E de Manhã e Hora do Boi Beber - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed8fd5e8e68abbf4823a1bd73b7e42741f29377f265611309a1151dabc239ba. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/BXY8V2000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216cf5657ec56ab778b30bba24e71d3cf96414a26a631835b2ca53c161341216. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:40Z), 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/BXY8V2000056.