Hubi may refer to: Hubert Hurkacz (born 1997), Polish tennis player Hubert Kós (born 2003), Hungarian swimmer Hübi, a village in the Lerik District, Azerbaijan Huzhou ink brush (), a Chinese ink brus
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 0x3e3512e608d5aa7c1c799b727a1e17b2767cc6adc780fab364761d04e8297112. 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/2d27997a-6035-42e6-a787-0412f6ee80fa.json and https://artists.proofprofile.net/proofs/artist/2d27997a-6035-42e6-a787-0412f6ee80fa.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 0xe8e378b74cc43e496fc1044d7d897da1211292a212949d1e4c16768cc7f21d4a. 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/PLS282400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8566d6c7fd770c0e8c6eaa7551e111cf45be78d65dd816f1029ad415b8973609. 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/PLUM72400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e83bea10a8a2bdbc605c1533cbabf6e5c91640663ea47d937cfcb7086cce356. 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/PL2DY2400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a61f67cd381bfa18f12618cb496f1819b2c799db9093f9dc32afebd86ff1cc5. 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/PL2DY2400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f6e137d0b18f3cc33b0b7358804c880f461b4dab10ba28349f2ae8efaa0b17. 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/PL2DY2400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67c05a21b5574d8a03379c84ee85e44c82fc6a759214919bed2b674f0282e46. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLUM72100419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86de1083c26960be0cc0410dc30f871306d008e817e634230720c1e4e7d78887. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLUM72400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2325912533fbe31d88a82e430eb09a1bff98172f0bab624d66e33852e039b7c. 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/PLF242211690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf543f5fc2d613a2ce0899ed869376d57ca9625a9adbdceed95df835d08a68d7. 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/PLF242211620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea976296b32c2d16c28d8198349101e74e288766fe4da88fdd0f4b2b46d33a89. 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/PLF242211699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e58e203546acef7403eaaab03d971a47313ecccdb0dcb5e213fb12263fd02ec. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/PLUM72300709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481b5c2a1782d475073456a46bf67eb3920668ca4bb8a1cc4614e8f33b0c2de5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/PL2DY2301435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01d3ce642afea41fbf69a0d12d42a52bab514c595376e8ceee656fe2ea31803. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/PL2DY2200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8457e3f68ed4bf9d528761af83271517d176a32da57ab81132eb0e557e67b0f7. 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/PL2DY2300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8764dfc79330d191eee9d81a78b983147c2e79922b8f54bf909ac391420f5567. 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/PL2DY2301432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0195d51756b2f2b39595f15de344731ca19ddf6ebbf482d61698e34252663554. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/PL2DY2301439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae22d5e90513604b5d8a44d14ce53e4faa3fe1722bc20f825eeb8011d73bd01. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/PLUM72300334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3640d0d5060adb2ba364db142c7b53a3a0e6ca81edaef2d877f0c399c9a06b21. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLUM72200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf543f5fc2d613a2ce0899ed869376d57ca9625a9adbdceed95df835d08a68d7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/PLF242211620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e16edabe145046b935587ce389c975775e166ef02ec54005d85090dbf2f4a3. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/PLUM72400283.