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 0x122c5bcaf0d76e21aba93b4e3accc7cca79b713b9bee90bed196b0d7c40af1ee. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac86de80-2006-456c-be6b-4059146d816a.json and https://artists.proofprofile.net/proofs/artist/ac86de80-2006-456c-be6b-4059146d816a.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 0x3c7cc0eea94bea4a24270f39baf178f8b5846914e02c09f19aec0a3a8e9ddc64. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BX8ME2500024.
Amanda Rainhas da Farra no Estúdio Imaginar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1dc68b7a409dbba12f8afa871ca4a2c69ed216a1dcf59a2c29109d23a2a2e9. 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/BX8ME2500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007b92f425bb9aad440defa8f3969d6ebc0489af3ce4db52244b376e7ae56432. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/BX8ME2500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b81c3c3d1fee857def56dec98eecb6d348d0dd9006af4ea10db429560f9f834. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/BX8ME2500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db3b36286091e91695a2b02b76f50a121481b86d6de22197a1eb3d76549b7e5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BX8ME2500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ddeeb12358187db5230cca719cf86bb08d7f6f13d45cc0be002cef483d5c17. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:58Z), 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/BX8ME2500107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484ecc994cf3bdd52c390964b34aea60e99159f162218c8c21f5805e053b2466. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:50:02Z), 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/BX8ME2500110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36862e72d474339b98a4dd1df39ab3e74508bdcc19e158526f9c8f162b8f4ea1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BX8ME2500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ec192df17b62bc60f596e6f8a374dceb6dc397952aa7826d4dc81b318c9b42. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BX8ME2500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5a7b60f7af989e444928a6b9d60fbd13e809421648cbb00cc225908cec6749. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BX8ME2500120.