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 0x90e556b0fbd6d02d4e0695ddec00bdad7123693a7c69c7f7752a4a9fddfe7408. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cdbf96c-feae-4c8a-a06b-fc7850ac1645.json and https://artists.proofprofile.net/proofs/artist/8cdbf96c-feae-4c8a-a06b-fc7850ac1645.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 0x0f6bb7852b4f86cebbcbf3ba2cad1e21fd0cb7ceb58ff2daf73313719068bc26. 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/RUA3R1917938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9d0e3fb7f2f655f1b87f32e4395d942960afc527fae396147a41e18858e229. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/RUA3R1917932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85d07e602cf231645c688b1aa1683762dc251d21a6b6140e7e27a6cb0792cad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/RUA3R1840271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc920a6e68279da71b8160b12627cb45a66da88a5363e3f807f4b6bb933b20691. 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/RUA3R1840272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b9389c684de58a73ef3dea21757af88b7020adb4a160286a2b97cf887df7e1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUA3R1840274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490c86f97001bc7cb2cc5db91a907a4787b5b0115ab358f25d76a4ac9cd7316e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/RUA3R1840312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408bc7cee10cd2751fae341ab85f473a9e6393f8f69229be4e5fb5e90e5d4986. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/RUA3R1840311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0269f6b053f9d78ebad0a70d169ccfcad12a11b1897b9ebd917d98ed91cdebc2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:18:03Z), 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/US7VG2053708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cce57b51c90184bfbe6dc54353cc7f2f17cb409bc69286d4f43eb537cccca1. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/US7VG2053712.
Перевёрнутая подкова (Оригинальный саундтрек сериала «Магазин работает до наступления тьмы»)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc0c0990caa5ac0990b1169e192303988c31563a1be4667636f2fa06521c639. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZW9M2239163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c552f85d4bebf4b4d2875aa464d2b8f4320797ca14be96e26f136a1589b672. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:49Z), 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/QZW9M2239166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbbc5482609ca307abe3b5e9d98a246a2398451cff90b2697390303d8a7aae2. 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/QZW9M2239170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf828871b3d00151ec2bbb19cb9feccd023b31f0b6c1efb3c832981952c0285. 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/QZ5AB2457546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee7e72d4348080bafa685f77906ee8d01e2190e8c1b13a5833c9f164a5f2df7. 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/QZ5AB2457547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eec606497078a3a282d40e2e504dc6b5c698e7c64b1e48a1d8d23cee3a69f8f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ5AB2457548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cbe7dba03377f4317f2a4c5d9a0df97fa9c070254e0c6f7b2d7b025d17683f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZ5AB2457549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f132b846d92b49bfd5a06951a22d8d7c7954af74485e19aa610dd13056a437b. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZ5AB2457552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6780c6472f9b55a9568f5a2a274c00afeef72d210950b4c27a364dc0aeed924d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZ5AB2457554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5acff98ff7992261aa6c0a1749ff1edbb7a98182f637f356a1ea589ae6eb925. 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/QZ5AB2457555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534e088f6259deded546a3af16baae2ec524ca910dcae240d3521579e8da0ee5. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZ5AB2457550.
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 0x09ffc75ecff9994d967606a8496fe4a27189d9825ca8ddfbb680e348f7fcaca7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ5AB2457551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab61d725100a43b9ec73566874cee6fb484d98175a4b4a644441abf78a2bd74. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZ5AB2457553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3e32bb544bc83e8a905fca109f4d5ce7b5d8e7a2a3b1316746f011b930d7a5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNJY2473262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98706707b563cd175f554d1e38b0f00c2118a47cb3e3f6e49ad82080c1592437. 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/FRX202195696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85554b63dd4f30b61ab6a689c09aa95064d7b69d7d23ab7f11c2d7ddbfc70a19. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX202195697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98706707b563cd175f554d1e38b0f00c2118a47cb3e3f6e49ad82080c1592437. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX202195696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aebd6f704b896893ce0d7ff28e5c849e5dfb06790a2abe9a164ec53dbb9e723. 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/DGA062045478.