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 0x167aa696b537163d751704056d7aa87d3fb3c7e22928dfa6de21f5d387956c88. 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/7b96254c-58cf-40cc-a0e4-2be3618bf8df.json and https://artists.proofprofile.net/proofs/artist/7b96254c-58cf-40cc-a0e4-2be3618bf8df.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 0xc80611ba699051dc6ff65d4b8bcbe617eedcc6570c850a3a217d02a32aa398ea. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADS1885117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3934951c9fd549bd0d7883a37aa17d3bb8631db70a2699ffecf4deb626d9185. 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/US39N1900256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c084bb5c066ec8eea1a9f2fa9a83338d656116ce9d5fcf489f0573a784f54b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US39N2000253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3934951c9fd549bd0d7883a37aa17d3bb8631db70a2699ffecf4deb626d9185. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US39N1900256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee00edf9070c269a153735317a84742fac4cce9df95e6f68ab6dfe1fe9da9a20. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US39N2000256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9cddbda753fa79fb93a88d9e6e96b805853075572ce80e4675ddaef0239231. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US39N2000258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80611ba699051dc6ff65d4b8bcbe617eedcc6570c850a3a217d02a32aa398ea. 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/TCADS1885117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa623254b2cc767c295ccfbf0b32bc90ab336d2c11570f8c1e7a92f892a510ef5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US39N2001288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11162c2258c08bdcac44aa95b7309407d6872e5d18753c3aa4deeb0f526beea7. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:58:21Z), 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/US39N2102295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825443a7a94d47c0a940027f9b671a4ab0e52bcd4cc6ec3ae6e3670310996905. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US39N2201731.
Been That (That Guy 2) [feat. Kutta Beatz]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1583145cdd5ffe482858c486e6d2d9ac23e905bfc014306e617f5080af2122ce. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHG2373653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c392faa349b2c2b6a2fef6bc018bd69485526d96c3d2de5546c9cba91b5eb44. 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/CA5KR2208124.