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 0x4e89e395da325f78630811810bf135ddfc99dd55082de7f071b43769186bfbed. 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/0d6fe1f5-ae86-49c2-bb67-f037dd1b5fc7.json and https://artists.proofprofile.net/proofs/artist/0d6fe1f5-ae86-49c2-bb67-f037dd1b5fc7.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 0x67e4904283e4583ec165a3bda324f4fcba110cd312ef2ba6882a3d8907063969. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BK4DA2401900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca27725030fc77bea0b1b959f73e8b678d94747581512f6530fc89fc68770e34. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BK4DA2401901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c290b0a60a765a2da5b5fa2a6d810f3ea186657915ee2257a47d6df0b4f6b00. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2401902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189abb7689ab76f22bd1b1f64325dbea327984a29676899157df7a6fb327348e. 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/BK4DA2401903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c7893f2734a1aba90de613a705d66033741676594d2c1284e8e6012ed5ed3e. 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/BK4DA2401904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8d75cedb2619c4ca68355438ee23abaa36066c2e1919b5841192a4ca574d96. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2401907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965047ebf2439d223cd1d499e0acad5692c11807fa1340452943a102334e2bc2. 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/BK4DA2401909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8902581bd5f1f97a3e3d4ab7ffe011301ff9c15a56d33127db4cc3d7d095429. 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/BK4DA2401912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d060cb8a1941f609a40a789c30907e2b36409be142da3f85420abc9d98e1d0a. 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/BK4DA2401916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e2e83f21b4a7db6c9392a7893106183152fc736ae06ae0a9b092622857b52f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2401917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20a3921a5ea4f24a077b12f2201ebf9a2cc50b9f579801e50dd3e431bb6b91c. 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/QMBZ92466992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d4c49d21a09ca63ced624c3b5817eed0ba63e252274b716f250d74671c123a. 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/QMBZ92464490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419e45f68cb99059aa4ef0548d4b96cc9d15ae4301cc538bf0ef061c3ccad9a9. 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/QM4TX2509413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf045a02f6a8bf697cf5a47d432ea15b6d446022c7e38c6f158dc1253ef675915. 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/QMFMF2378378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eafa190ffc3b4ed9a60a0dbdef6a99fb23d076e744846b217a3084f5fe97eed. 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/BK4DA2455236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da1e02a34be0f5d9d584bd8852bb7c3988a78b81afb6ab2f7f00f9193dfae4d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2455237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f370f5de978802c8c58052f0848c2da0a84e3b39345eee2d6ccdada0abe46fe. 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/BK4DA2455238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cac295b7f0321a2ff7fac92b7478cb867cd95f57b184c253bd4a158bd6fc92b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2455239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e8f2d7d9b320640c778e0246df07a3d8c198e0001451cc5a1e10137c6eea1f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2438330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004c4e050fb6d93e6aed7e3efcbe4568ae2974e22f06fc43dffff76e9e1cef4e. 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/BK4DA2455241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9286e612c34efd5831af079c4346a4423e87651a90b6803bf965af5efe199c5. 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/BK4DA2451921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58be94dd37df3feec4a550d7e1956fffc12ecbe9e7735cda6dbbebc6957a3e0. 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/BK4DA2455243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cbf1915f828d28aa93e1b42fe5ff7bd05da88f945e729568fc1d85e60befbd. 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/BK4DA2455235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e33dcfea1610c2a1f2be84e98a722a608df9e3b52ad042c6ee8e401df65c5a7. 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/BK4DA2455244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf245a259cf2295bcca50b009f9973cd1645837dcc2f47c22aedd3fdea2cf8f4b. 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/BK4DA2455245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41eeda079e90a69b95282a71a295342f76b64915db40168c7c0642b5a18f8be. 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/BK4DA2455246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc552a8783d87072171448c303d40ec65b531a71c776c6b9cf3685788d912b2. 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/BK4DA2455247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fbafd5c74ee662f6d4655710a652453299e34b128fd045cb112613504a94e5. 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/BK4DA2455248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453927f592a5d8f8f90bf189b10a77938a2c9ef7bc9a0fdbe07890e66ba70656. 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/BK4DA2455249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc821235076c9178c7c9c7e05a20c7fb7f1e620e907421372a421393be4d68c91. 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/BK4DA2455250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf450814ef4f1489431c09f133eda5936280c0f14f476156747deb1e9e4d914e1. 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/BK4DA2455251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4e81878ce81d0b988160912247a8e6cc3d4bd4b9f6c016ac13c3d13747abcd. 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/BK4DA2455252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdead94d6d543a86b0d488717f09966810caab7b07c8aee724ffeced2e02ed684. 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/BK4DA2455253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea80fddbf9586bc8be24a1ffabb3cc045562c1446adaf4f174837b380ce04200. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BK4DA2455254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6403486e3f1942f4311612ef7988356fad4a970757a946a0270b48d3c2c9d66. 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/BK4DA2455255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7d29937f7cc8004675e948b041571f383d6aaece7a9f940e62f81b09a74250. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2455256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250a6ead48d2f8f625ba06fa6ab3732fe63e46baa4c78f938f8553fbafd66a45. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTBD2327641.