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 0xa0aa936ebee0b927dd923471488d8f351d87c4ed121275c605374b2aec6fe150. 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/b76659ba-f411-4870-89e1-24a46ddece3b.json and https://artists.proofprofile.net/proofs/artist/b76659ba-f411-4870-89e1-24a46ddece3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Slowed Killas (feat. Chris Travis & Yung Simmie)
Gualla (feat. Mike Jones & Chris Travis)
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 0xbf7e67fd6a0995f65c98c7e83de8eb51ab3f4d6352cfea49f0d819d871bda5ae. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCACN1673630.
Underground Mutants (feat. Black Smurf & Yung Simmie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d30cd2a835b4dbcb2df3918f1a997cdae9eeed6cbf637e66fc34ce87fabec04. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/TCACN1673636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a1f4d61fe357290c1c9161eaa7b1cd34234c345b89ebc96722208c32f14994. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCABW1425341.
Underground Mutants (feat. Yung Simmie & Black Smurf)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd49383427441e8060d01eaf9638b2a8d507fcba1c617c694b39e744f90bfcb. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCABS1373549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36b1ecbd27b6216330f6922821b85d22b7e323aa7e4d085d0ba7740ed584f0d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCACC1425766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65107f19a0313cb7a9822dbbd3030e9dbb9b3591f18fe4469d15793d8ac8016. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCACC1425770.
Anna (feat. J.K. The Reaper, Butch Dawson & Bukkweat Bill)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93d5d4a5b56620de7fa2200ba01f7ff65f29f50698c56323985385992540797. 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/TCACM1613077.
Essence So Charmin' (feat. Chris Travis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6065866d79bbe3543d61cc0a63e396d5299e2b59b9e0654462e117470f00c3. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:28:55Z), 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/TCACM1613133.