Joseph Haule (born December 29, 1975), popularly known by his stage name Professor Jay, is a Tanzanian hip hop recording artist, politician and former member of the Tanzanian parliament for Mikumi con
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 0x5d8237b89e1405b1bdf16a432df967109434f21180f33e8006c593f6204cc6e6. 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/9de6c2ab-2c7c-46a6-9e5d-c52988986d52.json and https://artists.proofprofile.net/proofs/artist/9de6c2ab-2c7c-46a6-9e5d-c52988986d52.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 0xd4769abc1497084f98f03cd5c2720bfa295e3c1d88627e97a462314e567123ae. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TZA1X2000187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319a67feac0b00bc09840df47230f43115f1edd6cca8d2169227db263da4fbeb. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:31:50Z), 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/TZA1X2000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc796153d5e09f157f9c7effab3979ddec829bcec864479165224b43c3cd47b78. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TZA1X2000399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2b02ca580e323dd8e8dcaade1456b765fb8db3a50dfcd0ac0ece3ff4ec1a53. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:29:07Z), 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/TZA1X2000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc796153d5e09f157f9c7effab3979ddec829bcec864479165224b43c3cd47b78. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/TZA1X2000399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2b02ca580e323dd8e8dcaade1456b765fb8db3a50dfcd0ac0ece3ff4ec1a53. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/TZA1X2000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37219a294fa4de31701d55b0abe10713f5b41c6d3c84c5107ead4d231c4b87c9. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:48:45Z), 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/TZA1X2000403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcac69e69aff826aa31e108d827c29dad69f20da75565b15d0f030b30f55ab8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TZA1X2000408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0b8c6819d818848294a03a56eb83a08be2d2ad7c25caf2bd0d25aeafb81406. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TZA1X2000410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5413ddca77ad036f884a732684a24686e5ee977cd05290711e9db33cbe880728. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TZA1X2000177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc670c7d25e880f9140172867c6af602b3f19031ff9722007ebd78f1e29c5510c. 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/TZA1X2000419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc670c7d25e880f9140172867c6af602b3f19031ff9722007ebd78f1e29c5510c. 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/TZA1X2000419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0276051cac9e0b15218ca145ac8c00559a7e17c40b9e4c2f5d91be5be28f6081. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TZA1X2000418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc79a7689f5d50e1c3b7b768aac804cfe9b6b0a7fc22b4c0d3bc66ec930654e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TZA1X2100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb665558c6542a4176a25ea0816a2b5fe1e4578f5647c8721f37ca14fef849a8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TZA1X2100823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e30c0f046173e56e48962e3794ffe23d5b2726dd93dda7f7d699881031dc9e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TZA1X2300653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff68d22d102bbacda3aa46e84109ddaea8f25c33e140bce29ce3e07558c52a1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:08:52Z), 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/TZA1X2300709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1abb4821233163b10d109dd21a719e04f35224a0feb276fd1be85ad6b35f750. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:50:39Z), 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/QZQAY2546287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282a0e7dd8a152deb53a16dff7f6952bc939d02998a95fd37797a6592a240a5f. 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/QZJG51932351.