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 0x839ac7f41374e6ec8eba6b57a07efc876b387d67421d9859339ce098a286ca60. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f07a3ae7-7050-46f2-8f17-502e0ce0bab4.json and https://artists.proofprofile.net/proofs/artist/f07a3ae7-7050-46f2-8f17-502e0ce0bab4.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 0x87602ca950aedcb5d59bcb5c0c94194e76f7c909ce50ebe07097767813211462. 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/USHM91989025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6436b336e3e3371579f156f3dc322e8d1a31fa53526201222d675c4a13eccc58. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/USCGH2183436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11942e6c4e35fcc1dab6b744e6091011f66ac2cecc35fc98cc68a2b5d0c7b3d3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:27Z), 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/USCGJ2169346.
Hang on Go to an Empty Church and Think It Over
Hang on Go to an Empty Church and Think It over & Cello
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb7e3551ea629ade3655f2ff3692798008146b146aa06a8aa3f2db27d3d5051. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:41Z), 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/USL4Q2105577.
Chronicles of a Dream Before Life Tears It Apart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ce383ee827547ba50a499f13e5ada498f7e78467612a5d3fad17e2fcdc8385. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:57:30Z), 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/USCGJ2247075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75617b1d491be7f6ec092e5cefe46ceed46f450fa717589b4855bbaca42823d. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USL4Q2295365.