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 0x85f4a11f7cccbea73a5bc9c2d9d30ce3227edb3d5704c02a06c90a98676b1923. 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/3f6cb280-2b59-49fa-b74f-c09bbd0b180b.json and https://artists.proofprofile.net/proofs/artist/3f6cb280-2b59-49fa-b74f-c09bbd0b180b.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 0x151544e038accad2a44f20b6e5d2d9355cf024d2bb197b592f551e8fba71d5ee. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR2X41703127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65b4f4059f4393b8b91d34f11ee343c4c708ef8bae372e3498fef8c7e83e891. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMPU51293469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68264a3fce59ea5089a65e023f90f7659b1344e65a4ac4f2b89235f4c3ee349f. 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/TCACN1638361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38455799c7c4bb1a2d71a1cb44a414fd1414522f90881ead4a70b6a334941050. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUB422001077.
Пряными травами (DJ Kapral & DJ Andrey Nash Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00972672b53981e94ab397b240e242685c14d785eb8c97a556800e393c30ae0. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/RUB422103607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad83c00fbc25dde045ed7a57698f0d6f199340bd1f9b552bf2baddb30ecc107d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/RUB422203087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7787b275a1b3f7c88ba63da9613e3b1d529f332bb28ee53cfdf5f3deb089b2a5. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:10:20Z), 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/RUB422304014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c69d90a3726096df9f34f186fff3a25c0b30d1fab8cde0b1c44d4a2ed71463. 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/RUB422402574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d94d90aa89642ac453aa158a27384a0589f284cb2c87f28c72b64866716a17c. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:38:18Z), 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/RUA1D2500343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09269975dd8d1bcf9d4a216c5ebadf74ade9b1e7afa54acadd18c38c0f08c5a. 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/RUB422501066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83043595aa8a27a37911abaefc02b780716351b0dd75ea56bff78588c2d7895. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/RUB422501470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa531fe717f46205fcdd2198740ed2bc420ae2af51332e4891a8f67bb231509. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:24:03Z), 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/RUB422503671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5935ac8816f20abbf97ac34ae2dac606768829630b8622197d574eb900cdfa31. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2355574.