Koz or KOZ may refer to: People Cüneyt Köz, Turkish footballer Dave Koz, American jazz saxophonist, keyboardist, and composer Rich Koz, American actor and broadcaster Koz (musician), Canadian musicia
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 0xf6ce0c04c4dd2a085336907ac866de33a785e96b0b69756db0cc32cdef791e3b. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3836f164-ed36-4cee-9a7a-1fc8db359aa4.json and https://artists.proofprofile.net/proofs/artist/3836f164-ed36-4cee-9a7a-1fc8db359aa4.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 0x07b38b23b44d3727e671ea8ae513fbc00a725660287f1be82207c19e09d7d521. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TRCMP2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38caf16e95741bc06f3aac89d04b8b67b041ec9fc7c1b3714582864770b6eca. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TRCMP2400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdda78a443984971a0407b745ed6274c22e90f62f61c3dea47c8b73b6835e28. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/TRCMP2400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b63062f43a5fa8db8215674abfec27a38f6bccf1fb93de33b2da054a00c2fa. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/TRCMP2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23457aab643b3fef4a975dbbcc4193d71e182d1a92e60cc524683caed153f139. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/TRCMP2400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1982710a85ca3d6fef4f841f64699904b1554461404a4d54cd5fe322d0aa43. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TRCMP2400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eee40efd242b4dc2c9f58f601e21df5c437f9c944663fc85d82824e1163fb8. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TRCMP2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc332295838bf0659ffc4c6d05b50a60feb6c503120ba833e03185af4aad307. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TRCMP2400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9258de4d9359f6d6529d7436b0290437c4ff5b6fb24e444dbf15769f1703365. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TRCMP2400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272b38349cab494d90a469a023e6718ffd9bdf47373553e7e1af798eed2fb087. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/TRCMP2400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151cd8f0ee414352a3f88e594d61e177cc693f873b0fba07c326a686b980e20e. 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/TRCMP2400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c4b80e0245a9a90c468b0a83bccd96eea2dc4f8a0c8b081946b1250ca534e5. 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/TRCMP2400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84499eacc8b63914371aaec6e81c3de74ac8b98ab9bb78b743b23dc63c2db328. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TRCMP2400168.