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 0x32890d70d961aa27f10fc74d8d9b52eee8615e05c047bb079f09a30e5cd21041. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c844acbc-b6ce-4349-a984-d8904328d380.json and https://artists.proofprofile.net/proofs/artist/c844acbc-b6ce-4349-a984-d8904328d380.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 0x68d8752374a5fc6e7578d8fc65be7347234e5acaf4d1ded4843a9ead4d08e3f7. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAJH2532389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2264c95a13b9dca74df76c56031b3ab15823a3396fc27008ecb244333de55146. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAJH2532065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b783bf5e2fad97f7a1fa0f61af26528fdc0168161c8dd2cce3c1e0ca7420cd. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:42Z), 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/TCAJH2580293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725902e62c60b9595ead0f6cd89abf1ff7c340862eeaa2f743a97843fc77403b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:27:02Z), 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/TCAJH2532298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f47233878388b681a7c0af2b6edf4508ba8c5a96e26285163cc7b04fa196f35. 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/TCAJJ2556095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3f8dd676f6c0f35f2559a904fa56c6f222ad8d1b84fb477d753d790657b55d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAJJ2555902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94d55b10370381c0892c14e237f9b67c60c3c97ca35895a03e4594de5019404. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TCAJL2500249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedd09edbb1aa45a3f8a1d51d0d07e553f7ee240ff1210e0b092d63152b25c20. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:25Z), 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/TCAJK2500435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434e05847b3599ac78b8c7eb07ab7dd793e4dc9105d4b1272dd156076aac2a1a. 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/TCAJK2500536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93d224525e55d8aaa2f02d8818130eefd6dd17ff97b277f473d0b6364f5a961. 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/TCAJM2500395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30d204e9e288c053e183c13182fe6c7802c783294f17a900ccb81a033c37c8d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAJK2500465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3892e4fdfc39e579be883be9584069cfdc99b71582c074a08b417fc6967b1d4d. 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/TCAJK2552110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628013d02fd5ae36efca9857d6febb582b7cd194666c146fab7afc66a3b23f7d. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:58:14Z), 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/TCAJK2552006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222e5f9c656e7e6f94daab30ac12a5cfcad5010402d914ade9f76b465ea2d066. 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/TCAJK2552064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0305361bedd102f68152c601c7024567417896045fd4b459c365eb89265752. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:01:42Z), 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/TCAJK2552162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384f032cab6d32ba66618596fee7bb6be2ddc2e7af018c2cc5a670da74a32065. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAJK2552193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f07b4bfadc3d4a242d56d6760d80de47f2da0fe9406fd90b75471684b349c5a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:00:51Z), 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/TCAJK2588025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6ac8a41dadbb91099c7f15bced4bccd0e5aa371d80a9d0670a4b73b79d78bc. 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/TCAJK2587519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3b408c85d07c00669b4cfc185fd1361f3446a780e85ce3f10f81d77282051a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAJK2588190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf343220f41f658a0bc480173328bb47ba095073694708942d0b5bbf7639825. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:22:09Z), 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/TCAJK2588124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ddddb63a464d09f455c4a16fc2d38a348282fd345cb34c7b5366b6f1466b38. 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/TCAJK2587733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d614600ed6f1eaf152195448d848232dd83d65c8af9b50763c8abb87da6d85. 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/TCAJL2523764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1fe9e2b8d5986f8c735b4ccf6ffb3c66c2da31c0d63bd141d9799b257691c4. 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/TCAJL2523721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db1917f7eda4bebb60a5383bc6731301329b7d9ae9bb565700443b14f434ac0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAJL2524031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47881d2862169bda86649fe9b325ddc510698b914d92e5acc307fde62b276429. 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/TCAJL2523521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e73755c0a70881e6c01f2a66dfe880089c12d127b1792037a97bb53d2efc6b9. 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/TCAJL2570241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdb82155040ee72ad318d23f6f77454a3515c9c18d8740cfb19ec55f05502ab. 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/TCAJM2557291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a207dd0c63628af2e6a6f58cdaa36e49efb44d22efb0fc1a89fb8eadd9690e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TCAJM2557192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad29d8511805bbe68a925aa39e3e6212799176bf1cb28e863942e8eb39e8f49. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:34:32Z), 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/TCAJN2526737.