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 0xeaa1108390bc606fcc7dcb4342f7f0b717efb1c90b5c9e8eebeb656bdce7480b. 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/2a2562f7-225f-4bee-820d-5780accb478b.json and https://artists.proofprofile.net/proofs/artist/2a2562f7-225f-4bee-820d-5780accb478b.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 0xb8b8b43aea1183d05c619b3e18b7bd0db5d4eef04034dd9a93b7c9d9057b4d53. 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/DEG931801379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb082a9f63043af7f137de8fc0222191afff0485a582e13ae00d4e5328d6321bd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEG931801468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3440f7b4bb3a98b3eb47facf5744bb3abb973712b5caae20dbf42896887b83a9. 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/DEG931913420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce31b0a851472d5f06aad620dba0d04202d1d61a2d874cb2cf4279f393c5371e. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/DEG932003711.
Dancing with the Birds (Headroom in the Dark)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb291434154590d9902184fc1e1b107d4d9a4d3c5fd39d655371094241bbfa7ff. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEG932103932.
Wheels Keep Turning (Flying Mojito Bros Refrito)
Tigers Roar (Flying Mojito Bros Refrito)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b327bbdd4fd3ebac38634a5c513718096c484ebf55a4f3f2b129e3b96922b27. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/DEG932300892.
Tigers Roar - Flying Mojito Bros Refrito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad1f2d252210a650fdecb2cb1af163cd760968855e0c64bc5c40464b44ce34b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEG932300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d74f983a757f654efc22a67ea2378c78f57e59311e1430621a66f4e530cd77c. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEG932300897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1122d3a504a5e5ae989ac8e34034068daacc9cd9353a4c96cb857ea4f8d8d1c6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEG932300894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50151ee58c0c4962f0fce61dc14ffce78a557040dadd770963d5dd87e284cb9c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GBRH31201141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05d68a2b53bdd89c5c6a46bbeb46b05f9b4b8637d35048135006ff24f5d34de. 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/GBRH31201142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a982f0eece470a2fa29483fe1404a6552be3e6946bdf307984fa19cfcbca66. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/GBRH31201143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115a2cf53c906afe084792294b184e5f85b257634bdf0a4cc078ce303501464b. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBRH31201155.
Holding Out Forever (feat. James Alexander Bright) (GA25 Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b473fc7147e9d2b5e5376dad90b4ff87c687ce345ada947bee0c6b2fd4e70af. 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/GB5KW2202576.
Too Slow to Disco NEO presents: The Sunset Manifesto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba94888d02d165ae1e52456786a0e8ec310dc7794f9e43b3d172ac4757737ca. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/DED622000125.