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 0x5cc4395feeea21251ffaef95dd03398ef788646d97a89110c8e00153548e55ff. 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/e594e038-dcfe-4420-b875-9c9601f98ade.json and https://artists.proofprofile.net/proofs/artist/e594e038-dcfe-4420-b875-9c9601f98ade.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 0x197707be2e3a2f7eab8a76d93c597d53eba14e2e076080c626933f4f5d1bfb2f. 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/RUA591800212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cba1cdd1148d2b13b386a8202cd9fcfe2136d209ee1ec2329bcc66b741176c5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA591800206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b70fd2901469e0818c72969c8b0eedd7a093e5c745a29e4275b92236bf4963. 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/RUA591800388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6d8d48bd98ff7c44b1d9f0c292af0246c74007e1d64eb595b22160d018f0c7. 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/RUA591800706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c2eaaf5b9b6c1974911366df5bbf979470b2d20142f1750532d4f88287030d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T00:05:41Z), 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/RUA591801372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11effd61b7ba9d29abe0ce7853e531b0fb9109ac24c456d84e06e2b85a4ffc2e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/RUA591802503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33aa0e8dcd99c5190b52238d459bdd122c2adf958031ef52961044567bfa809. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/RUA591802515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a70a7e7f85d76076f3374309e67a6c42e66584df787649c89c2160a9b7aa9f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/RUA591802518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae93ae04b800317eb4dc877631f154aa998aafd59562fe2570290ac5a59b05df. 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/RUA591802521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3318a01b1664986b28def51bd141a53bcbd88e3a0d4f245767c12ca70a8a4b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/RUA591802524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cec264bb049003cde53fa54549ee88059ea81257005689277880e5bf7a578cf. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/RUA591802527.
Я хочу (Radio Edit) [Alex Mistery Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e693403cda33fa2be3c881f52b75bf7baca57eefffe23fbf677ae2222cee217. 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/RUA591900743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1f7504761a9574a288e3299a1b85a7efc7b83c31c0e65758ff77bc59083e65. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/RUA591900752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f29244a632bdc7db22be9552971ead2727e7c8de29b50476a3752d23db95377. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/RUA591901666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d862478b55da6506cd9757a85e017e4a2eafc36bc9b011d0af10fed0c58957e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/RUA591902225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83726b78b937eee7a5de225c83cbc5da6beb31344abcecf7fedacc50dfd3fbbc. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/RUA592000446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ae57897f30df93c99fff2e572bcbf2fe8a691f1c1a54f261bb0e0fed13c45a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/RUA592000510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83fff8d2f404c662b1fb118d0d9862058862c3924abcad5df1b5632483c71d9. 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/QM4TX2114811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b66accb05514f209416e2e7b344639c3d7644b03ee530a60f7df2aebaee03d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RUAGV2302811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f8cb0d645b26cea22c41d31a09b0dafbc6334057f8c35bae262fb13c5d8cef. 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/RUAGV2306737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ed33deebb70ef4b57448d8f10e0a8c46c606386c88361ceb627c70b766074e. 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/RUA1D2494098.