Bastard Sons of Johnny Cash are an Americana/alternative country band formed in San Diego, California, in 1995. It is led by singer Mark Stuart. They received permission to use Cash's name by Cash him
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 0x5ce6f14c00d6e6ec6203b0797f020b0bd9ab1ec43fbdac69ca63f77aedacc4aa. 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/dcbd4fd3-a804-44d8-9906-58948f7f45e2.json and https://artists.proofprofile.net/proofs/artist/dcbd4fd3-a804-44d8-9906-58948f7f45e2.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 0xe5ffb70fc7e538fcdd35f2de36c4fac4e1ecad1bd6269e349b48b4fd699368df. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGH0505589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df6e39c3895e257536b174868950c79ccfa8ee004c20d4113abee4dd4407d19. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USCGH0505583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ffb70fc7e538fcdd35f2de36c4fac4e1ecad1bd6269e349b48b4fd699368df. 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/USCGH0505589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17aa8f37da8dcfa4ed6e8fa3ef1edd91ebaa3da9a7fd90e918d3a28a0cfafff. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USHM80542269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8975b134882b5c0ccfb2f915b6181f2b26a859e68436dbb700d11d8b59f3dd. 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/USHM80542270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a20a612f29ea91f0486b40c4528164b63d3c2f8ed6896d9b6ce4df5059fbd2. 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/QMCBW1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dc3a8595c0acd7a3121c27865a2b9fd1102f91fbfe2a0b3b47890f780f26e1. 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/QMCBW1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4847c4c39b7d96d218a04e77dc11634f2d58583de4187c464a981d1f8bc0cbd4. 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/QMCBW1300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a20a612f29ea91f0486b40c4528164b63d3c2f8ed6896d9b6ce4df5059fbd2. 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/QMCBW1300001.