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 0x9e183fca24611d1339a7729135115ecf9ccc743caf22027e140fa890024ea82e. 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/24c3ed91-c79c-43ea-9240-e580349af3c3.json and https://artists.proofprofile.net/proofs/artist/24c3ed91-c79c-43ea-9240-e580349af3c3.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 0x193b6ab46d81480c5d18b770d8f2bf09855baa42ba70539ee531aa0a4304bd8a. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZPLR2347214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda94468424708d239522a7e85d9f886b8f6b7160ff3d862d1090f409fb4905c7. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZNWY2373142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ce9fb0210cf9fbb9cfc3ced866fc6177e9bb31bd8d50933f1dec0b51594ec9. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZNWY2373156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e46e0ca7097323f2ab196a694e43723bd222eb25e3b63cff3d16f8640542c18. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWY2306010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e1a7489e26b84c7ca7c7b193bc2679823655cbb5f62dd30d78d0e8b6c70fd1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:58:21Z), 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/QZNWZ2304677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf171d6bdd63e8a12c63ef72e687288bd2bc1f9832f9891aa1364d860ab39413d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZPLR2348837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040ce4f59d88d85cea57f053c8100d5b4b76c9a7495581df956eff370fa5d328. 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/QZPLR2347199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b109199ad73da2255787336f55a0eb7315be1a59c02cc618ea07cd63748927. 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/QZPLR2347210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2232ee06757bc706a1def0fbcefb95ed0b63892c505f189e105c6a31af679e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNWU2458235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc016fa2273c0d86769e4ebb6ef9a033264fb9c9661bdfb2f0f341fcb487fef2a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZNWU2461973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959828b19e414ec9e1a310f6fa5daf9f23f54b98072a861f7d2e263673f368f7. 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/QZTB32475975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8992bdfb917b6498adf87b9711991faabde535ab5bb71f42a881d83880984433. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:54:53Z), 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/QZWFG2489564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749af35d7feec899a62a2a9f738d24f779b5d4430e67e48fa5709b41927fbed6. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZZ772400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0663c863036c088910b4787332e8479a0cb6e965380da59988265dd3a9271804. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QT3EX2458427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacff1b4b8737d900b27f16b91d110282521afb37ff0292c5b59e5dd059932fda. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QT3EX2456331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75d2a207be620a19d22971b8852b2e82fa08433695cf050b3274cb2d20d91a2. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QT3EX2458376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82107747ac0c8a94aa4618e673ca90348b91a943b38aaa988d9a7abb4ec9fab8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFYY2509718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc7d4d8e4c045f736855f3e25d49439d2d94b4be11dc4b0ce75b6a66ba0218b. 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/QZFYY2500218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632ab67e44e112489daaafb90ae6e214e4b2c14e21e577d77a0a04eebd5b3217. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZFYY2500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cc4d90876d0614145058a551f5c944ede6bdb6127835ba799ca078a53f00e6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6K2570807.