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 0x562d748f6843c2088f05d3ab003a367cc2a2b17c8ad76440b2a648cdd915e539. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0408dac9-9a66-40de-9cdd-ccf2a339ac53.json and https://artists.proofprofile.net/proofs/artist/0408dac9-9a66-40de-9cdd-ccf2a339ac53.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Latviešu Šūpuļdziesmas. Tavas dzīves ievārījums.
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 0xabb7aec74d93118cb3a1422eca0411dafb88e47fe3b11a5e132fde62c52265e7. 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/USA561408458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9b0fd43b4f0ad3e93cf4c3303c8b497733d00b9b7d0bb7674ffbb55bdb94a5. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:21:11Z), 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/USA561408459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d092f333fb8dcce6a21a2222c8ef3523b17c7f274895f2662c50834d6eeb1c8. 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/USA561408461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e61b1ddfa85f32d703a3221970aa89158900912f68c2b3a32e4e2095e7ad7c1. 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/USA561408463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598635f686b8646564d012f33b92142ac7116641b662e1009615d360dad98c30. 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/USA561408465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5192a931b2332f81d28c6bd4d609f33c4923a2c27897eeeeb6cee0a28447c04. 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/USA561408469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26985912a59a92d3b8646dc382f104ce8df833447b670e0ec1ee348bea124fa3. 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/USA561408472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1276102801bfcf95d25fc45e4b357c9bfc03a92e34e2f566450783e96368345b. 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/USA561408473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630ba6b76d9ad9e2341db0293f62b5c4e8992863a2a3c78690a9defc3fd3297f. 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/USA561408474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3e93482415119ae9a966ed79b0ce48cb6e6ee04b80a1df818d32cdb83da2c6. 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/QM6P41401082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4f4cefbbb49190e7f624263d3b37c70e7400b5804b265fcaf0395260edbd0b. 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/LVA100800219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53e014b52e6c13ef74af5a3e92ac3626fc5aee2e48a8efb6330391b8e1d667d. 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/QM6P41401083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03be83384bc970fb1570430c23da152f6324ac4d943780a45f3ebe33ceb7138f. 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/QM6P41401084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf46a3019c067b8c89730f1ddd6c61034acdf6f661863112e2f5b2cc68988f34. 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/QM6P41401085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30695c1a7e5635874555e4eaa5e9807f2ad11839b3d7c7fb69641d6621605566. 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/QM6P41401086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294b11681da2224138d1140dd8d53157710e5d2e3aca6fb79c52e11deaee9b60. 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/QM6P41401087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bf17d9052106f98d9386a729b9ee81efcbe79657045b8b48fc337eadcd2fac. 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/QM6P41401089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d90b29d599a58d3c19f9e2a460bbb41d6bbe09ca035bd378f3194ff656880f. 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/QM6P41401090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666281624ae8b6739a6302992151826ddfdf3a692811d2961400cb29cd4a192a. 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/QM6P41401094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfba65aa7e8df6cb5a4dbcd53b27ca41c9bc36ee270845f652d5ecb3651b0d1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:30:16Z), 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/QM6P41405532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5963da5ad00bf91be3b22f1d7df6076c75b6852ede9340efdecf114181a8bc. 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/QM6P41405534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d44d7c116bb8dc5d9759ac705843e02beab98fafb35fcff83941e5989f9da1. 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/QM6P41405536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918d9dc12e8a701e82712ddbc7020490773e8bb70346f5722828f98925380072. 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/QM6P41405539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ea406b6cbaf46429f7fd9aadf30b689fef796f75818c1e886af5117f6545a0. 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/QM6P41405541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa096404182990d6f3726c485b5f868264f731182504f032f6b14c884dfa974b4. 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/QM6P41405542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a4d0257b503da9d3d5c41d8d763dc11322bbb073d767c852bb5c256bf902e4. 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/QM6P41405545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862bc44ba27b796b88a9db09bbed578022508ad966149b9b5fc836aafe10b986. 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/QM6P41405546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bd147f0dddcda379c7d2c06201793ed9377435bd4153c1002397608b884d27. 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/QM6P41405548.
Latviešu Roka Tautasdziesmas / Pirmais sējums
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351b7d4b0c9fa860f5526392e345cb7b0addd8f1db55db6333aa831a2ca85a05. 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/QM4TW2036661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff54321f9c92364c311e532a4ea94794b8bb067c1db6c479c96f25e35509af28. 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/QM4TW2036664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d340c204994c2e8e4a6e0b9b1bc6eaac2cd09fdfdb644192394ddc841c3a615. 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/QM4TW2036668.
Dziesmas no kinofilmas "Vajadzīga Soliste"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f77129d1c49b5aa414d655b56d41f1a9090fe74e9361e36454455e05daf609. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:21:21Z), 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/LVC761400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe286bcd779ba23e4e32d04be371cb6b62c18267212a354d1f3dea231ba73de8a. 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/LVC761400317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c5cb77fa162b3b2d0641ddbff87ec9ef00dc82d31458b427d0602685fa00c0. 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/LVL151707638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d49547b75134923b85ce4cd01e09a5f9d56ea3e1b62b508d39c1c9b73678a1b. 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/LVC761400351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cee4d7e6fd5c764f35a8114a2a352519e9835884e1de2058a9cd77e4b5103c. 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/LVC761400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c518bbfac0ec97a593bb1b94c4ea1cbd5b721648960424d83639448df06f8cf. 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/QM4DW1650297.
Krusta skola jeb kliedziena attālumā no sirds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279ede6f1b3195afa856144dd824f800637d02779437f58de8d3d1d9e61a5711. 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/USA370580933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b09a5d235a2c8e1a4f041c9ed923beeb4abf0b2f0444768c0078e9f848e5066. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA370580934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a33b38c5231cfd755c093a96830aa4f0ef4c5f4ef8166cbe82ecb821e083a94. 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/USA370580935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f19fb93af949da382cae205f03ec18e96c84fec8e98687455bce5960e319fad. 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/USA370580950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93725baeee35d17486a7c2e65ae7ef54699c5648319663433ae806b485b56192. 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/USA370580145.