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 0xfbb336117e1e9f938c0c485107baac1535ba5eacce9777f6c5beb5788f5e621e. 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/1d60cdb0-90a1-46f2-ab4f-e0fe452007e5.json and https://artists.proofprofile.net/proofs/artist/1d60cdb0-90a1-46f2-ab4f-e0fe452007e5.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 0xcc98b87abbe1e7af0927b98a1945343238bcb8d101da9e89a3df45aa1dc3883a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:53:02Z), 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/FR10S1508632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2ec61215b6615577bf77603ecf8adf0ef68b89b3b29b0f9fb51e54adbade64. 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/FR10S1508633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65057f1c445d84501156b5a47b848aea8c861c0d52f20e5cfd72315c27d6e7d9. 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/FR10S1508653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf965b4ad36c02442822da2c3c0996eaa9b808b25b92bc885238415a749b8f86d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR10S1508654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc489734513f6bbd0ba0093a01103f7afd0008c5be61b55f31fbca5e60e5b26ae. 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/FR10S1508636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee2c21ebdb837186138063568ca5f59fdfb27e9218ce7c86582856165da276c. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/FR10S1508696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578336544200569f295b3352e02386e2be1be50c743d0c870d426d081fcf1e56. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:48Z), 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/FR10S1508658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc89f76f2338024e356c9643ee4b02fea13401c55b786611e41fd039cf07a060. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:30Z), 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/FR10S1508638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb775f3e74c596f4d44e1ab0f50bba01042461793da735291085e49e049151303. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FR10S1508641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6cccdf6ebe44a1c5658a5ee4d8a4a88f49c9f7342f90a97c18083e78cf4ded. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR10S1508644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec3eb65bf9f090026764d4fb8a2cd7356ad3609b2cd9801407060abe99baf47. 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/FR10S1508665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6292d5bc4606e59408e1743955956da3d91ea6ee8d912e7840d3b4dc18ec86f. 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/FR10S1508686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c32c064648bb04051ed134d250668c5a66d326c2d19a4231184f9a53c16ae5. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FR10S1508687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf3be28233b8a6038a92c480cf6b7c8229084594a436fa133ce0b1ed727c060. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:13:51Z), 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/FR10S1508648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05cfe616ee161a6903ba39831a8c18327fb52dc3fcc4a4b2a43c7b3d34f6991. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR10S1508668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f79f4446174f7a83ef0193b153a0600efc70adc568df02b466998945901d2a. 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/FR10S1508690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a87d7968983058c74a2fa2848cde3f800928b5f07334085a48e54224176055. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FR10S1508650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ca67c2ac9b27aee4da989e2a558fad1749ffb51677190c7035dc29b3054e62. 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/FR10S1508651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144dedf12073418192effc8b443038dde2f825357167b5f48edf566e2b3ea906. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR10S1508643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a87d7968983058c74a2fa2848cde3f800928b5f07334085a48e54224176055. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR10S1508650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2df9d5f4ac0c755a139a18e7a24be4a40459f82f9ae5f87b7f3ec7b0234f43. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FR10S1508657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2622472a5b2d3f09ea9a82bd47af69d308961563c5490056cdeb5e82d1ca69cc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR10S1508681.