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 0x3c06e36ae74baf25a250feefe56f67658bff81a8d50498c449d3ba308d9f6654. 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/53fc58b3-e48c-469f-8933-8eb8c53d68a8.json and https://artists.proofprofile.net/proofs/artist/53fc58b3-e48c-469f-8933-8eb8c53d68a8.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 0xaeb450c56b9c5630a7695fd52d99f7c244dd25d2ca82090baefae942aea9073d. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/DEUE12399216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2393fd6fd2c6d491b309cbb62dcf8ce9dda2560617ef80047006a9a7e4f1479c. 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/DEUE12399217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ceea25cac1b8f976bd77a016c12447f77d67cd6a1ce39bea741dcb21241fb71. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DEUE12399218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9f1a5337d80b197bda14cff8fbd5bae4db0f889c2a6249d50d7d92e3ea650b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEUE12399219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153acbf5a2a2bc793def01ac63520049b172cb1ef4a453db1e403e7893ceca0a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:03:26Z), 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/DEUE12399220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e13de96739c27abfd1788edcb54937e5c3daa3fc0f0057247d02723b49fcc1. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:20:49Z), 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/DEUE12399221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c227fe70283ae251990beb120b9719977f8eaf101c3c6b899d81cb97873172c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEUE12399222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8c5ee69f435561cfb4e953dfcd90bfca18aedd7a66da19cd84b660f16537be. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEUE12399223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11b942d9e7a44f4571f5f78876961775ce559919cfe027e6d1a487677b2ed60. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/DEUE12399224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1349fbd5e326d4674bb2e34f697e915bc4cfb02a82a11b437f8016a585769e30. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DEUE12399225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b5052dc4a059b0ca4aaa995d04b9001d0814a69f97e4e3e0261b683ba3aceb. 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/DEUE12399226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0ba0520211bb0fb1c8dee7c739fae6cb589c0f31df40e19046ef32e45e997d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/DEUE12399227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f6613fd8c08d76a0a9eaff50a400466c22855c0ffca7d858a44b2261cabe56. 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/DEUE12399228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f772073d6554a401e25620c516bf814f3b40c7f0a35c23f0d6c1052d3f7483. 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/DEUE12399229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59d46d08f153b4b8213050ffe3596972b264dbb37368220ec6a95d4b45da417. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:07:20Z), 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/DEUE12399230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfee3ca211ec186acab7ae53adb544ab41f4379f6834e2936032b71e4ce64bf. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:01:56Z), 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/DEUE12399231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fd756f12de43d5fe3544636e69c25352e7b4d26d70d515d617d70ca8d1e97e. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEUE12399232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87d8b3f4f0109f30b50e409a9c4254f8e4bdf452ebc7b2e2c2bd4a28ee43766. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/DEUE12399233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3bf6cdb6bafb28873ecf2a275d40d66ba980c4f2e56ea84d780da50c0190a9. 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/DEUE12399234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e648c3af2bc3f61149f94bf37baf45505a3c38d9bb6b64999004050bc4b03e. 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/DEUE12399235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fe05c6478e5b711ed0629037a857407ff567d2e43a735dc389743ede08120c. 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/DEUE12399236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526e79ab23e5441ffebc461da79ad5734be834762b3e44435c487730a4e3a50f. 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/DEUE12399237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67e5269be9c1e3855dc717a836b6b5bfbda3612a66634d022d6479cb82068fe. 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/DEUE12399238.