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 0xe25f2e6bdd4b35225aebac5086aeb603a6929b2423addbce83be47a24a2e2e10. 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/1c4a5e60-f808-4ec4-9ac5-c6ddab027351.json and https://artists.proofprofile.net/proofs/artist/1c4a5e60-f808-4ec4-9ac5-c6ddab027351.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 0x59663089fd4024fee4f9a51a3ebdf5d830da0f593027f4110a81e0465eee6c67. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX872044246.
Без тебя я тону в этом море (prod. by devianprod)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049407e61b7c3046f8362956d30ec46a4f890c17073dbeebb3bc589e9d802f5b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/FR26V2014970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63686067b927bc1fe5ce0e1488100cdaeeb570f325cf46bc6e6e92d17acba82b. 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/FR26V2014971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9525bd417450d2c61eab40a0f0b92ac2d080deccd33d3103f90c238cdd63b8d. 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/FR26V2014976.
Потухли в доме все лампочки (prod. by blakkflame)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8df324d55bc72d8b475ee78b17bc9ff752c8378cca2611a27c905816c3ca1f. 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/RUA1D2207912.
Без тебя я тону в этом море (Barabanov Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59983bf4b6ae7f3f76aa4517d1edb2dbd39d872723fab8bda20f65ea7dca3d0c. 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/RUA1D2225150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae57287415ad9d67c20adcefc02b22045e74082d673e7d2a791c5eade49f11d3. 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/RUA1D2239717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29bc2f8fde260d541b77a8613d0ac421910ebb26c7ce1c30f23e39dc6b71f24. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/RUA1D2259158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4589ea0263eac5fefb24266da4e88fb597563ce4533fa85ea8569e3c271b255a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/RUA1D2264912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af09ef179a780eee7159b247ec4adc7b013d8fa602e44a1e42f685f600442ea. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/RUA1D2278733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f06e39ae6afe269b70641ac5ccf12e9d1987f52e72b90a348d246e73e1a2dc. 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/RUA1D2290833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc953ac39dd16a36f6d14aeb6c4ba138f07b5894f58b1108129307e0fc9ecdbaf. 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/RUA1D2299663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e68b836b76adee838ed1c932ed0bf1b372277165dd6fe4dbccb4cc87b126f8. 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/RUAGT2207805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50f904ad8f36a14ac99209cb6b7092fe9519a959c6ba67a6de98926d182f19f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUA1D2331376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd061abac6c61e46da72b52c0ddfb8e0823773c595bbc2fae2a2f676857c31fc. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/RUA1D2377531.
Ты даже не представляешь (prod. by Barabanov)