A circus is a company of performers who put on diverse entertainment shows that may include clowns, acrobats, trained animals, trapeze acts, musicians, dancers, hoopers, tightrope walkers, jugglers, m
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 0x28c27c175b3254d53627b968c82bda0a7954f687cb8ea7bce3df35ded2e4b42a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5d3a8a2-f25f-47f8-aa64-899126000354.json and https://artists.proofprofile.net/proofs/artist/b5d3a8a2-f25f-47f8-aa64-899126000354.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 0x0f2b77b2a1eccba971435c501cac33bbc73ccc23aa181814a94dbf92b3796e81. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:48Z), 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/FR5M61200380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbb1c8b92ae50d7bab7cfdbc3e6a446f3611eafddcc26580017a94ce288f9a2. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:08:20Z), 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/FR5M61200420.
Anticon Presents: Music for the Advancement of Hip Hop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2ee79a068738a8184d5efcd5ffadf2a2577cd706b278ec973cde527ed0cd31. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:16:31Z), 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/USA2Y0400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17093c16e79696eba0d3a9b78bbfe7ae4ea46efa53b251e15c4589f5ccdc0fe4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA561015958.
Buscando (Bonus Track) - Karuan vs. Circus Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15d0cb4440ad316f938f997f18d3930e274e6761fc466aa259053853fce13c2. 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/ATX790640041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15d0cb4440ad316f938f997f18d3930e274e6761fc466aa259053853fce13c2. 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/ATX790640041.