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 0x49efb673fafc583531fe76051fe602cc7fed7becd98d49885ca6a0e38f945250. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d00e972d-50d3-4906-8d17-2bfdae9111b7.json and https://artists.proofprofile.net/proofs/artist/d00e972d-50d3-4906-8d17-2bfdae9111b7.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 0xc8bf628e6815ff4e12f94088266a4ceab511b99a6e343991b81ed408180de297. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRWMB1400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c455507f022214de26fabf0e7db070226e87f48477adfb196478ec2884ed23. 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/ES5151601688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6296faf076d3e349d14a0e835c7d04b08e4dd7bd21e3a2e7eec39205d5056a5f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BR1XO1900004.
Isqueiro azul (Participação especial de Alexandre Carlo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25323815cad1f164f5cfd85889bd0c72301e86004fc0806e16366a88c7ecb547. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRWMB1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06057acf051084e5548245971c472e00bf6a0a96da332c27c9bcfb9ccded9646. 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/BRWMB1901077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8909c0c97d4edfa0376109f5b469c363082acb695a10bf261af9d2c4f848726f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRPCT1300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d74eb2a32bc7e3214c1d7874803b03a068eac012b34dee328cf0063096bceb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRLWM1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bfead998a23f715c63b52396aad99ea4153a33d043b2f04da1fd90ed57bdea. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRWMB1700255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87da75aff4f69c093aa66338b03a46c865638b41a5443b90fda679ba12be73de. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRWMB0900428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee630cc374869c20e118105b02ed47a6e0b56c0b2018d54e461ee9228b86cf9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRX6F1700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23840ae4c60d3bb439937b3febda92ea678670aa4b1ee628314b92cab96560f. 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/BRWMB1901073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5f2777ef63501c439d0f563b6ac88f42538a835155c0bc19fd86c19b2c3212. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRHZ11600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbcdfda1ab6aafb3e48a91cff2b3eb1eeb0af0c324794989cce21915ae9b84da. 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/BRWMB1700251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0a5b37b6fd78186808b0dd158917518f1f51eeca3d468809b9c0ba40a7e833. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR7S02000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe634a2d11aed9ef673d58548d5855ffb039fa60fdb849f366d5b07af850cec16. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRTGQ1700045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0f3184d7a5c6011a42a45300decedbaaafafb6d9e8ef0021cbb6d8a1f63abf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRWMB2000842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4602704d6e2d03d87fbfcd0b0b8b66e457d9be155e8d359948c3a2fb7599710a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BCL4N2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05dc40c4d101f78b07916772c63baae49a20fdd1a2f21128731c5eacd479ca4. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/BXTEG1500006.
Das Verdades Que Eu Sabia - Tributo a Guilherme Arantes