John Blaq (born Kasadha John on 16 July 1996) is a Ugandan musician, songwriter & performing artist . He is commonly known for his bass vocals and dancehall music accompanied with the introduction [
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 0x313e383d42b39d77ef4339be0907dcc3327156f2ab1732e3653074eec8141abd. 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/b7424700-beb1-4bb8-9655-9123585bbe13.json and https://artists.proofprofile.net/proofs/artist/b7424700-beb1-4bb8-9655-9123585bbe13.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 0x43e7814064c9cc5023623a3dfa41567345db75e65dc7cb438dfc8df7686e5c2f. 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/QZDA81915276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274a0cf73badd7db694f85d069a19314ba9cefedc8bc1a05c3aabf3ec9e8109d. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZDA81920527.
Don't Stop (Tonvako) [feat. Daddy Andre]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae59c304b1c978580a9885231687abf19880e4941777a68a2c6c2bbafa59f9f3. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZES61997854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a075ce4245382d9b7e35b0b8003e873b590e28a7fe09eaa1d93b54ebb79ae1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZES81975431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b7b12243704a334c1590115d48fdd4a33094f1a8160921e360ba86b3b8d356. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZFYZ1994042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8528c9660a4847237d59b46eac5714c5a32ef395faad04546ec5f88d94d89a. 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/QZFZ41955129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd3f1f8cbb7082c6f0c66af82ec38319dc3d535c67cb644515af4f68b77df4f. 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/QZZ972406436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2ea4d68f1579cc296a7b548b1eab9530db51621e7f82951c2f0a123f4e774f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN71952645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8217f7e5306db90d33951afce0ef7525e73e0fecae437c6d149dc08387996ef. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZK6N1918859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176860304392c685387bdf001e2b1b4e2fed6809e8f879d6ef3dd3f9fd5bef91. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZFZ52061157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176860304392c685387bdf001e2b1b4e2fed6809e8f879d6ef3dd3f9fd5bef91. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZFZ52061157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd273bd4d575f561094d51b874decccf85927f25a726d1729e7d14736535a5cf5. 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/TCAFO2155459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9674972486fe71034bc3e868c9c231c3787394809c168df39ee713f57c076c34. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAHW2422876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1696fcbba8fda3784b1d1e1cabe5643a97644af385abee688df82d65e3e4d64f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAHB2306754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d8fc6947665ba5485bfe081f7353e965914a47c896109a16e53aa8ab8a6ae9. 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/TCAGI2209147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36423648ca3d18c97d7f51465e3de4f9a52ec2035dfdd6579ba44227094546bf. 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/TCAEZ2079044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67eb3ae7678faaa02218d8383e72c5326d60422a9b853293ed8396aece2c954. 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/TCAHO2330159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87832336c1a98ee42da467f3275eb90883de1f9c0c015ca43bb6f81ff6411d09. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAGT2311026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea75ecdb65c302f5133abbe4c6f4a93c02392a83fa185f391c374983c19f1488. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCAEX2092440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ae3a8dfcf72ee565f022e3fcab737035b468367dcf8a4bec83089ed5fb5ffc. 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/TCAHA2314166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fe1232d97049f308a50102b15ac8b1abf55d123c764de6ee4bff8cd24a9dac. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/TCAGF2234009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f7b70d72d86118c9eedf05698d9b8581d6ebbf934d08ecf9560d33bfd3437e. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZNJV2517330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5355655178c0dd82bd72d7fe5dc3a61b93e50195e3b71d7120dbc21e041aec98. 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/TCAEK1967804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b8fef6c3639a159cc7e0e5a4ddc891e230904a70ca12f3f1384654edd6dc58. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZZ972347821.