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 0xc4153464f286d224b84d556389272f144ed743119436e0b1d2864c850c515b2e. 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/388eafcb-8989-4343-8a85-b79f89b629fa.json and https://artists.proofprofile.net/proofs/artist/388eafcb-8989-4343-8a85-b79f89b629fa.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 0x30114afbf9c5c07eb7682877bd3006842c4db471a7f37784664deaa72cfd03e5. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BXOK61900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefb1c43458025a8d8d4c46aa144422b71edf355472968e48859260d81f45626. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BXOK61900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495323d17e3c5fbb2518426c2e1f847f6e89245a412ad86530345b51d1d611dc. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BXOK61900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c1dd2f7f1aa54877f5a2e6111b049d200cb9de03289b3994bdc6780173e3c3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BXOK61900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09b151e693cbadabc26c668aa8a1f45a058fa1c81f19ca0c0863fdfa161d6bc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BXOK61900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9fd1655f05961b3d30338afaeeacfd77dbc6a3b9dd5552b7117b243c8db589. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BRZGQ2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a609ce93652583e5039e37c29cedfb7d69b7c1c90a8d186b73c8de55f3acd7b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:04:17Z), 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/BRZGQ2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c6ea5176d50e2cb0cec3c26440c4f5d3e9a82baf04e8938f18100efe72a3c5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BRZGQ2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd308a36d19accfab5740721262182924e8bddd26c0b7c0c2aa6a0519064c5e2f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRZGQ2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6ff93b524ed66a9a736ff1b322d3d6ade5ed24575e7d0e8c9e960b5248b97d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BRZGQ2100010.
Há Quanto Tempo Eu Não Danço Uma Vaneira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788533f2c4b840bed0214cc43bf090e1e159033d53a37f4c3ad13e6cb21f064c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BCSO32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf2255bd096284cbed31aa8235dc6c993cb153ff4570f1eb5b5ae0ecdbe02c0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BCSO32400002.
Xotes do Sul: Xote Antigo / Caminhoneiro Apaixonado / Xote do Caminhoneiro / Gaitaço / Do Litoral à Serra / Barbaridade Tchê / Duas Querências / Xote Largado / Tempo de Guri / Querência Amada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb186fb85a35f0e2362cb65cd080f9b1b7c2f840aabafc83cdab89ba260a3c864. Chain 2 (Bitcoin): anchored in block 958045 (2026-07-14T18:53:23Z), 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/BCSO32400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c90336809df9382e5b8b244e22a9fa8e49dec88ce0c632b48e71fe2e04f6eb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BCSO32400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6c999cddfbdddb306bc7f264524e170a1e582e9c00a8138cd72273ed2cc6dd. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/BCSO32400007.
Há Quanto Tempo Eu Não Danço uma Vaneira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a236ec89173b233562ee12fab94ea27db9f6b7216be26747922c4cdf308732. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BCSO32400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade3e9caf1139fbe0c4eab32d9a3d02a433fa2375275bc7854d919f41e7a25bf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BCSO32400010.