Traktor is DJ software developed by Native Instruments. It is also used as a sub-brand for Native Instruments' associated DJ hardware products. History thumb|The first version of Traktor DJ Studio, r
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 0x6e74ab7fc3bd1ed2f92e0827c22dbb78f7badf5ddd43bbe527bbc2958cb4058c. 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/0d778ac2-816e-4c89-9d29-ee6554f949b5.json and https://artists.proofprofile.net/proofs/artist/0d778ac2-816e-4c89-9d29-ee6554f949b5.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 0x41c88609b38efffa4ce386f96da562aaa20b8984a944c3fbba9f14f3aa28a261. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/CZA381103205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f5fcca22e2ac9a93f54c68e663b3012766c26614d06d18fc61acf1c77d359d. 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/CZA381103207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b815c62a60f8d58fbd5fe26001d9b70d6e8aee543d5b2a8603e219ae2aa043c. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/CZA381103209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccb5c54e7e5f109c9e6f91261a7298db26cd31ab1895420e2c7dd9524efa2c1. 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/CZA381103210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9fedc30a52993b748916e7a1274cddad412841ba7514f002ee51e1192639f4. 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/CZA381103212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc524f6b172f466216bbac882bfb2bb52826ab74a958b210574fc8fcc6e7ffd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/CZN461300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92850eb4ebac9c259c38609cda675f5116d045b1b449a2b3ac26c6a9672db168. 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/CZN461300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ae4b4654e9dcc2f02353fefaf60466f5b2742f51a0b97cee064ee52c6b38af. 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/CZN461300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09acceb3aea63c753e199899a8e2a2b3a7ae6443a0ddb56bda03d294a2d58c2c. 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/CZN461300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1df44689ba5d13d3140b7743313db8437e1832fa5682ea936468d9dcde4378. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/CZA381602204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e0995e57fafbfc624e64da0677075bfe5ecba810cb62ee2a9f500c1b544156. 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/CZA381602208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d80360d83e38932958b00e591df8d3844e3ebac16ddb7cfb4ab3ab532384d4d. 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/CZA231800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a9f648a9fdd220036f0f6b08c59b4ef1dbdf05eb916a34830cbfc34b107362. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/CZA231800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffcb415be74cc14fd9015ae59abb2ed5c39768875f048478f7fcfa9b884e7ed. 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/CZA231800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecfb39ef9140b45cb2c7a7d684fb96975edeb8331846137306c4e27ace9d4b3. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/CZAL41810002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03bc29f3e1864cdd1c0da6fea509335c6d72714825ee55a74bad8167d45a73a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CZAL41810003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97de5805a6a0879165fee6c58d4937b68e4db2d43fb876321c8ea817b8cbc59. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/CZA231800491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c515ee2ace852c01fe79fb312e4243afdbb97a015526cf815dabc64347af41. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/CZAL41810005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65abdd29073fd7d2fd938df976ed791acbd41af2a56567cd90004a76ac37170. 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/CZAL41810006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8a00cd93974f293c8ba6acbe08138026ce62b912555bbdaad17a2f2615fa8b. 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/CZAL41810007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc7e946978b4284530be3a494c65b9f45e83d776b61c81418ebda4872b203ae. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/CZA232100620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20753bcbdce13b473ff8c222b05583221da2505225166e8d760de8c2a8a6f505. 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/CZA232100644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b705f5b903444dd72fe835adab9402259107810dd84d229b35fdcb7b26d915. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/CZA232100646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedec24c26975819e362750c4e5d7a380f480cae2902e2c01c77217a48fb45082. 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/CZA232100648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d76a1dbfbeafa0d2034901295de69b981f53fafdf7437d76b2d3d356985f2d4. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CZA232100649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb6a8f4a8def65713882a4ea91d45c3b578ce1cfa3a1e7c31124a7fca9d6a4b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/CZA232100650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff583dbedecab9e56d8f74b63234c128eb244dcd1966d2193525b0bd615899e. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/CZA232100651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5c61421cefad9f2dd06d9c52cc585a7309affb0d4b1b157e4dffa171862d18. 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/CZA232100652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2c636fa54484fc2cf4a0106886bd6502625c90e4932f50c9e0fa14416122c8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/CZAL42200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f03655204c0ed9573d5de258bf52d47f3eeed591af2b5a70770b673d3e3f6f. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/CZAL42200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1cc4db579269ade5b5e86189221b182d088c67e7f4a8bfebb1c3ead18fae41. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/CZAL42200004.