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 0x3fa6d5a79b043adb0de65d5f9e2fb90127effa9df54041382bb56f18ab75fb69. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69e95ef3-854c-4ae7-b3da-877bb48e82ba.json and https://artists.proofprofile.net/proofs/artist/69e95ef3-854c-4ae7-b3da-877bb48e82ba.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 0x8eefd8b95bbc435dc6c65206a7db31d684dfc843f7b6e4065d258109c05f574a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:29:15Z), 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/CA5KR1549260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f6059e52a756fa8ed2c7221cecd7688cd9d94a2e0c8b6fca96974bc7b00570. 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/CA5KR1549261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e80cd116ca09cede62f8db1d534c53ea4ed18adc6744a6ee9fb7e792f96eccc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CA5KR1549270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383fd1c876963934cfb742838a721a8d7541529b0ae4a5b32cd434f2172237b3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CA5KR1549272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd75a77304dccbfb3cf20cc9a5390a11ac0f71097c970124a406096ada1efd3a. 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/CA5KR1915687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94feef527f0c933eab51ab9807c224e870f8be06acfff0b32541e221d5e5bcbc. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CA5KR1921981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b00692620f5936a40e7186dd3abd6ef2bb2505904e51889e2e500e6bce562c3. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/CA5KR1921983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7e199ae5a7e050926620a6f46b80c5e4695906a8aee6e82c59c7413a9090a0. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/CA5KR2135605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9af6e389c4df2485d3aa4c4fa6f1f16c2d78fddde571bf1c01504f464d4930. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CA5KR2135606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3f6c64d8db4cc51826e8d458fa20a5bd424168bc057681cf758721a54d80da. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CA5KR2135612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fe4527f4372cfa93bda7ef6d37aa1cd0d8f99e996e59bdba029c06e2d9fc29. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CA5KR2135618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5115f7eca2044ea72450716844a586b8c7c178dc57cb8bbdb6e020be3482c4f9. 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/CA5KR2143767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879e20fc29339c9ed158c020f85a7cedd75ae42b21869eebde273313785616af. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/CA5KR2143768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e888da2d98375d064ee82a65a23df19e293ea185c5663d610f3293f9e229445. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:03:30Z), 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/CA5KR2143770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39621e6c67fa033e393523b81e5f8baa0f6e51dead61f19dc27cd80c0cd18c9a. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/CA5KR2143771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa2c214d47465413c1c8683c44371b8bd184dadc48841340cc723ca65c0f656. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:05:31Z), 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/CA5KR2143773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8667ce8835cc8f5e99e0806b657ff654095b285a9e9618ece0aba6dbc4ddad. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:43:02Z), 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/CA5KR2184266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64a554186c71186c6c5c8070f9492cf625bbda68d24c9dc4f79a823c5fb1e1a. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:44:16Z), 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/CA5KR2184267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa164213c9aa23ac173f0d5b06d4486dad9085f799ba8edd82a38aef53bfeb7c1. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/CA5KR2184277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c49b7a0e705a659ed998d66472dc778068deb3d388030706c39feed82d6bdf. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/CA5KR2192052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32cd2b1285a3e28b2f9e97f946e80c072c406992c868011c244eb728495a829. 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/CA5KR2192056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7f6f85b1162d55f1f8479282b1a616839cd37ff27780d8093a9968085b7a9a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CA5KR2192061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246f25ed45bfc3fcc22fdc032f4014e177c969c69620fd65b3198eaaa4c051b7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/CA5KR0005017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0360368c7a76ee7ac232c3028fb40084caf944dc4f0a2a0b2a79f048a10b6b9a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CA5KR0005018.