Charles Mingus Jr. (April 22, 1922 – January 5, 1979) was an American jazz upright bassist, composer, bandleader, pianist, and author. A major proponent of collective improvisation, he is considered o
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 0x1cfe1a007ae132d20164d841cc90e3e86da465d16bac412de4393a54e4148c0f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4f720cf-f718-431b-93d9-110c459ae5e8.json and https://artists.proofprofile.net/proofs/artist/d4f720cf-f718-431b-93d9-110c459ae5e8.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 0xe48f36892f3d0fd08d27def4dc8ff16d307b78cf926393f8b8379821caddb767. 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/USSM15900735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d174ef9c308a41ddd140ea462adadd08bc455897644f4cf87f77ee1ef04dfc. 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/USSM15900734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41e337c6fe11a65952900c82a140d865a6cb1d40161b6b2f2b053147f21a728. 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/USSM15900733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389c32612c98d784f3ca7d4592f4cec10843dcd4e918362873eb61dee255e429. 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/USSM15900729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d667c9d091192c323c89988b9042e958a8a5afa6c91573b349690ae37607f85. 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/USSM15900736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3a595ffdcad46e66ba8950f0c2a152b422453a5973658c83936b6035db37ee. 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/USAT20001823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b2e281b30eba6efa030c8c962f0ed258868b983fb2f8c545474474bebbd628. 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/USAT20001824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf146cad3861e9a64955001b4ead0e6fd78d83964cdb1194f9641f526dbe613e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAT20001825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cee6ba496aa60b6aacdff217baef6144e9cae0693b6b66cc28fb81c66bc9bb3. 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/USAT20001826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56a005e1c8b46e6c1e9a9834bea2292c97bc24d8f68ddec9bd7e85e4772bff4. 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/USAT20001827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e47df8f130a7f930813c60be89b9d0e63c1427b33d4e5d04a484be4b55f8715. 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/USAT20001828.
Wednesday Night Prayer Meeting - Alternative Take
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe981b0737758077ea761c7e6174a13d47f7c27f0d5efb311895b64cfc35f0a. 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/USAT20103321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288dbbd296e563da7b95b5d34e2b880aac316cb5d7d0fd561c1f4ffc97207e5a. 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/USAT20103319.
My Jelly Roll Soul - Alternative; Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979179edb4d61828167698cc403006262117d80dac22b5c8e8bfc0a53cc5a2df. 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/USAT20103318.
E's Flat Ah's Flat Too - Alternative; Take
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c56b699a827ae509ad98501b6cbb62da6138ad1b20c84cbfc65df918e41a1fc. 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/USAT20103320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf10a87c1dfd2aff05b558caff8958e447c5f775dde94a4d611e038fa59db0e8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM19906453.