James Chimombe (1951–1990) was a Zimbabwean vocalist and a guitarist. His career included stints with OK Success, the Acid Band, the Ocean City Band, and the Huchi Band. His music melded Kenyan, South
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 0x7763a15a4ce388999d0e349882d647cf4c88431160db3cf822fb1244a80764d0. 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/0a3a563a-2ef1-4506-8382-817fe3b4c4bc.json and https://artists.proofprofile.net/proofs/artist/0a3a563a-2ef1-4506-8382-817fe3b4c4bc.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 0x77c671f349959c9f3dea11b2be05b0c16f0bda3c3a6227af0022e19a94bbc21d. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GB96Z1100869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd1c3599326367ce6d248cdeb73c138fd6161461aca0c58fcf057314b68f2c2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GB96Z1100871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150865c23661072157c500df23a039abae18dd12b505a8fde7cca58874a21178. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GB96Z1100872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728091c3aa6f0905dd2d5fc6bcbeb2af31087f5ed277cc9e4475f3ac8843f6e4. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GB96Z1100873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe691dbbaa24feac838645d511db2e57de2acc2dc4dc6f10bcd9984165a77f555. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GB96Z1101032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd739b5a4dfdd701586b3086e55677dec60ae2eda19837259f64017f249a3c49f. 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/GB96Z1101034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e356ca305fc83732cf0d1fd5ae2d03532dcc61ee284384c8a19cee730e5a8c. 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/GB96Z1101036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d75abe85a7228fc12fb6c29be1255e4d7fe0b11a4484b4c188cba8ef02db15. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GB96Z1101042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01ce6901eae6eeea1b8b81339014296a9ef8ec73d0713f950566e0a13f0cf21. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GB96Z1101044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050e66342c087eaf6c8b19153e1607183d253f309d0a71b0d96d244ad8c09bc9. 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/GB96Z1100955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d6a6898755f4711d7ca0354a0c4e7c28a18c81fa0b6e9f2c4a4ec607ca183e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GB96Z1100956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd920746d2034b97d059b9828b5119417af38ec6e2ea6410353303d539864d6e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GB96Z1100957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86395fb773fe07bdcd86cc7a1582d92924f2014bc60e516f9a12344f34a8be3. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GB96Z1100958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5ba45c931e223c8f3adab12247e6704e28b17962b0d7fae2c22607fcf586b1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GB96Z1100960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa884586193c09da6926c63a88f5a6e5098c49b33a7f3a7b61bcee130f5ef8e6a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GB96Z1100962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3995692ed668fb199f00135c93f6f72db4c0ebe71348b2b074a6f3bd6df012. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GB96Z1100984.