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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2354fd2ba2ed15b2f609d182ac4b94ebfd84ca4a1812f3618b239683c51b5a. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae81996f-82be-4699-89b1-7c8343523ac8.json and https://artists.proofprofile.net/proofs/artist/ae81996f-82be-4699-89b1-7c8343523ac8.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b5fdc4fb312154ee751fc385cc0fa4d7f663b5a6ee7e85940f07c690057d40. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/USX9P1441167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0292b5ac126085d1933c2900f22a2f2cbb7ebab9f1829b3dfefd3d118ece8d90. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USX9P1441168.
Pé-Na-Roça (Aberto Até O Pôr-Do-Sol) / Hillbilly Roots [Open 'Til Sunset]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0f1de0c87e1cffdf38792d1f44e098f11a707444ece65161bc9ee51cce0944. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USHM81473023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391313de8cc77773236f10257fd24cf520cb2f5b1f7581ad8195b442ea24a400. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM81473024.
Dia 23 De Março... / March, 23rd... (Seu Viri)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8cc82bff1b70d4298393a7724a76f6ca69e87c3961fba2afad7114866bdb87. 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/USHM81473026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe8e0308b042bf189e2f86d5f53229163ee42cde54ac6c39d553f7632b80f50. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USHM81473027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d649fadb6394cc1aa4632482c36b577a4461a43501d5627d8d52fdfdb6fcc1b. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/USHM81473030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc1f74d4c67df2285a428090ef47f6a5f710bdcc4f4d9444f1a38e88f695a92. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM81473031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46af09ec849960af590d80536121aaa7c2140d70fce1b2b4e3eda82307d08d82. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USHM81473032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74ebba768aa8107a5a13d20f734e00c0e476ce7db93e52265515b8962733ac6. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USHM81473033.
Natural Mystic / People Are Strange (feat. Pipe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808df63d4aef93f53821bd918bffd7123214f2e4a0d2675c5b5ab5d439ecdbeb. 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/USCGH1825384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce61eeba7b3b5e441e097d74c0a87527db2da80618a1982d20d11bc56695834. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USHM21862132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7720772bcf9fea0283749a9b3c1fd21c1330c8dfa9bd4b4f8ed5e80580aa853. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USHM21862134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc944501f74bfdc9d72bc1d9ac92b48846a2ed15438b5b88681671aeafef37169. 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/USHM21862135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f440ef2757618c5ec6426bbeac1c08dfe3d54e6b3985981da7b312d9c3a33c. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/USHM21862136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f50ce530aab9d79e5996ebb668b46c16725cebbc4db4f03ce8ef367ef7530de. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USHM21862137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6078ca29730edb2b4677afe58caf494fb4e568404561338396e3c58edf1881b5. 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/USHM21862138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c3ff14888364db411dbeac10d992af8b179148569a65352fad20ac48a63de9. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USHM21862139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c1ad2dd78518ebe3b8516cad561115007573f28e4eff3274608a3684e90d1d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM21862140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ab63671792a35c0e10ff8f7fcfe9f2baf1cf2ca390e286de29128245ad7f5e. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/USHM21862141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0742a62e455431c7ae058805f30aeb3649ace90e37dbbad4555e9ab5a7b4f3d. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/USHM21862142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df433c96fa0f509f9247d692846085cb182e5217bef4d37c1415217b1c05ca2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM21862143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19e9fa0b9540004ccabbe3606854dc9287b63fd2f3645b6da65f890dd80602f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USDY41868924.