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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 0x8075e82273ba0072a2ebe39a0bf3525bce71511ef03eb02c221430872d207f5b. 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/8f145623-b5ec-49b5-ac77-e571d90cbe74.json and https://artists.proofprofile.net/proofs/artist/8f145623-b5ec-49b5-ac77-e571d90cbe74.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 0xcccd1b105949dc5f2ba990e69f34c63390d6dc31320f8dcc246702c3457ed42e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/RUB421800991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b8476fd87a4dcc119f7cb1afcc586b2c00c8174bbb64cf4e2108161bb8bac7. 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/RUB421800993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee31d5d7a404a9a66398915ab82170976e8be9d54a987a3a3cc92f7b9d5ca791. 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/RUB421900768.
Бессонница (Alex Shik & D&S Project Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e86db8fd5cf099c2b3328dd7a40e86b72f58528b1aba4898c12539eef0408c. 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/RUB422000584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88f099a9a4183065ebf50e1495a6ec9e058132c6620cd1c461efd516a164513. 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/RUB421901546.
Глупое сердце (Mike Tsoff & German Avny Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e2ddf026b66a9e8a3cef39544887968ab7270757afc8b0a5f6f84e046e730d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUB421901835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb664fa3ef87b66e656dc647b11e3e3433cd452d16186c6f95647486fd3e38e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/RUB421901821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f3ed17de67473a078e03da65432c0d54c801811857c8bf97db2ca219c10caa. 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/RUB421901853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737a61d02ca45b598602310f35346058ba9b71d979db8a4fe5d017ecacca8780. 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/RUB422000715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db327874d605ccbff2be08bb8ed8857ed82bf73d552432069b8d85340217f86. 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/RUB422002081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed134d0551b6b46858197deabca7a4530147981e973cc7e184aa8794759ea52e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/RUB422100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d83c44d5b0b6d96f8ddce51dcdf392e9a6301e54118ef7b72e0ed141890bc0a. 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/RUB422100523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae7c30f80559917bb0f27f5a5aa07ed68190e0623a5e3238ed18e81e13d0522. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/RUB422101222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bf274316644d836710387018accecc9fdd358731ced4a82e64d56d432df74d. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/RUB422101684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6697c826e3fb1aa47e4aadef0e7ec84f83fc538ee1aba238f304d7115b5d0970. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/RUB422103954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18295c0f04569823ca9514b85d856a053fbef0fcebf7ce2fe98831fbe5c20a6a. 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/RUB422201434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16c4c6a427439a9141ef7fe3609f5edb765657f0c63b434ff1c6e67c202fd8f. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/RUB422201683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f982024c4554d1cf7a4b3da1528350f076e3094b58a15727c4643025b38f673. 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/RUB422201809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518e1e96e3b4bb9f37cae0865cd803a1b4685e2f2c2f79486c907524fdaabec6. 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/RUB422202466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378a4120e24557de2c58a78fe05f238a2e9655647ce3f008cba6aed58e6a857a. 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/RUB422203080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b462c3fc5494f55658d20c7a015b932f51a512c308bd304225791bdde7922e. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/RUB422203584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e9deeb75e6e4587c787a5b53be48831328b14b71e2b5eb1e48dc9fa4b5075a. 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/RUB422301462.