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 0x6c2b076a4de4253e9f4abdb28bc691322520128073f0237ad90b1e36aa0d0e64. 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/b01e06e3-329f-4f0e-936b-10e2710f6f98.json and https://artists.proofprofile.net/proofs/artist/b01e06e3-329f-4f0e-936b-10e2710f6f98.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 0xe774f70704ba017f79065960725cf7a83576fce966caae4ca81f52c0227f7224. 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/BRHUM0500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba7134fbf8dbafb6f7480145390aa028964459765187852a78764b509d6c11e. 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/BRHUM0500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb66b00b5a7c57ca9e7d13da68310e80300ee735d319c02d8cd8ab92ea357765. 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/BRHUM0500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff69ffe45905e9bd591fbabd040df9ae2f6b44d1defc7d55f001317172ee6e8. 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/BRHUM0500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6e8b7fee8a9a21121341fe939931562bea39794009d6aafc0f764439957c0f. 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/BRHUM0500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36d0ae35b60986445484ff78ee41615c0dff6f5e480604e74dbfd23318472f5. 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/BRHUM0500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7507751c99727254db4044f63ad4fe68cb4d16d8941d4f7e98653e3f6a73f6. 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/BRHUM0500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf9f6f0a4cc17201d96e40025029f36aaf86db4f36f3ced290b643949f06698. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:59:38Z), 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/BRHUM0500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb5a5fbabe813e516e299c9da905bb11c6667a2cfe3a566c62e49d347c91d73. 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/BRHUM0400008.
Brown Sugar (O Ritmo e o Charme das Melhores Pistas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb66b00b5a7c57ca9e7d13da68310e80300ee735d319c02d8cd8ab92ea357765. 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/BRHUM0500008.