Professor (commonly abbreviated as Prof.) is an academic rank at universities and other post-secondary education and research institutions in most countries. Literally, professor derives from Latin as
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 0x644625e73eb0022db2a3c14d18acbe522d1b1b57a227122a061769596dbf6a55. 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/9c09f103-c16e-4a79-9cfc-f2de7c2e0ef4.json and https://artists.proofprofile.net/proofs/artist/9c09f103-c16e-4a79-9cfc-f2de7c2e0ef4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Throw Down Your Arms (Live @Reggae Sun Ska Festival)
Throw Down Your Arms (Live at Reggae Sun Ska Festival)
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 0x33e3f451f03ac90b8accab158e00a78e320d33550c2038d2a9d5323061be3c93. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM7282084312.
Bonus (feat. Mlindo Da Vocalist and Vele)
Ndincedeni 2 (feat. Dalom Kids, MSK and Mr Luu)
Isibhaxu (feat. Mampintsha, Babes Wodumo and Pex Africah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738daf485740ba940f97f4a50b50683f33fbad983db2e070c1e8ca868a5616af. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA2BO2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e05bbb2186273ed5d0da8a034cf7866aadc63662cdac93fe232d12c688c2d23. 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/ZAA012200475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a6263d62a7485daea521b82b2048be542bc421a413ddc34242958eec5ba166. 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/ZA41S2302071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f037c20e2629e1b780fb8cd2286156402ea4c346ced870d6c99de51f1e4bb6e. 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/QMUY41800181.
Mlontshe (feat. DJ Tira, Danger, Professor & Dj Clock)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62955a829a76c60db09d52b0f393a5613655999c5c926663635cae632d4ea923. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA75S2000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681dfb1c68a914ba00853a676934b15db96b2b384db14817ac597933261587ba. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USQY51351991.
Isgqebhezana (feat. Professor & DJ Temlaz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8760c465ae87e6f68332ffc362639d0322c90c80db839d831201c436ccdd054c. 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/ZA2BO1800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06aa0b20f0e97e24ea8d96abb914e77f40ee1709d964a2e36ff447c8ef11b561. 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/TCAFO2197763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a8968d3be7a787563f660360118ebbea12152e972f60f24f797efff1ec780f. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ZA2BO1800027.
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
Chall'O Music Presents Chill Out Experience (by Jean-Marc Challe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4a1f94347289b569e2a261cc47d63ef2a1ebc39adaa4bf3838ea8f31f54ac8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEH741818881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef08fe0267675c718883afe66fd80351ec5a52aa8149641c08c055daaaf38b3f. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/ZA2BO1800030.
All or Nothing (feat. Character, Emza and Professor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed59d0b8703b401eff25eb0a697942b7c911b9a1577a69631c1a36bdb2d5120b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ZA2BO2000003.