The Mannish Boys is an American blues band based in Los Angeles. They play classic blues in West Coast, Texas and Chicago styles. Founded by bandleader Randy Chortkoff, the band is named after the so
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 0x8b6d8222037d83e8b9e3e0590b7621b89137c6505d874bf5a306ce4d4adedd5f. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79255e8d-a9f2-43ac-83b9-a13b6194d3ab.json and https://artists.proofprofile.net/proofs/artist/79255e8d-a9f2-43ac-83b9-a13b6194d3ab.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 0x7436e20ce0ec120bc6e31d9e56635a955fe4683e94cd9a77ba0ec0213c0bb874. 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/US3H81000639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b67bc19d71d362adea4321d55e044c4f9fb0b267fb557c2154e4564993d4085. 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/US3H81000640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af85da6b8e526f8ea83cae7d2c627f523e2c1df81d6c19a1cbd724a193894ae. 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/US3H81000641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaa4b58032741ed39387e6341c92a1ddfa81348e8609fa447ac564951fa70f7. 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/US3H81000642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef06d5baf73a339fc9e087fa7f26e43a22ebb6be4f285584fbb1002811c635c. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/US3H81000643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e0d1943fcae3043394cfe463d19c45dc4a37903dc6f1b93ed864c4cc9b5742. 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/US3H81000645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e23aa79e1d72644407b8475ed60a50ccde8871763cf8881f6f9d7691c6e554. 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/US3H81000647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb806032789041758827e5a397b4d8494c1928bdaf8b2a72c86f42a1b8841b071. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/US3H81000648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3e6d818c2059b5dc6d7c0ff647ce208d2f014ed674107f6f7693fda9d76a36. 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/US3H81000649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa263b6a501bb0363f9bf0a29280bdd2c13daa12af319d16499a983b9a941494c. 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/US3H81000650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1621769298a08c91d5a217009aa83774099a855babd811b8c21596fcf6ee3e14. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US3H81000651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34534f20d392521b231a3bc0a167a660918349e96e5f8fb624c96234f4e1198e. 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/US3H81000652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2075f484b76deb4cdda61d50b0859156db0dcba11f5fbfa915fbbbc808c560b6. 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/US3H81000653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c60a892af3aa084c18cbb8f6b4b0c622f02cb6707cf133fced591138ab76b8. 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/US3H80700222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47df256c0f801e12fffad616ee3eaa2087857e8db6f2b32df97fc48ffc7000e3. 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/US3H80700223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6050ec91f157c53d1b722f083c045282b45b7a8a9f2bbd834c8abde042d374. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US3H80700225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5f6f9df027f2a2e8e435b57ccac13b432b5378b99c9f995c330af52a351b1c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US3H80700228.