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 0x85bd3a8a6f3dadcc3d6e3dbd7a2d262369799fd73f88edfc941a706222add67b. 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/9d27bb6d-87d7-4e35-af5f-e3cb1d51f31c.json and https://artists.proofprofile.net/proofs/artist/9d27bb6d-87d7-4e35-af5f-e3cb1d51f31c.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 0x8a0a386951dee03faf0f95701a0e682ff6375c5a783ea0a2f2da193299e30b8b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6711700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a174314c09b65e3364261b937438e33655871f5014c6ed6156c7eede1d4e48. 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/CH6711700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1b1edbc79fbf606eed46e1c74ad70675ae71d2a78f68b69dcbe9cc08d37236. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH6711700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd27f2984d3c1c89140e1c53aa33fac89fdb511ced8281139733f493aa9bb568. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH6711700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4813ef75e97eee2041568b9dfc8c28c77f9591dddcdff0c7e28fa21eee28827. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH6711700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559388493d2feab0f3ef3c3bf25cf6aa5d5dd70a43907feed12bf40755ccfd9c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6711700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0019361766f23d743b0525726f259973a2cd2ef5ba6cda55892c465fe4fae902. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6711700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1c6eafd1d3dbc1ce56097c87117dc91bde588df79affd7542a2cc5db4d71e1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH6711700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fdde13a5182eaa4ec3e88bcee270f0790a3ed3089d98316eed30c1498b485f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CH6541701762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7471925f7cfdae9eeb049de1e8aba3c11cc48f25dd9c906a0334c42bd4590f5a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH6541701763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8ebb98e86698886ec62a558ccf4cfe32021ddc49c085c427a041db761e0b07. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6541701764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885e96a4a98afcc8566885283d4b226a49df2aaed493744c372722278a1ddaba. 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/CH6712100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f836fd7377cfb1a50e2a57c755b321624617f9026ef8486e1e27f3c9b6df250. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:41:50Z), 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/CH6712000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ea51dee4f60d2e14613d1157237027bfae850838c0751760c1fe2cc3f57433. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH6712200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d075fe155e0e738358c06634317128706a278dec67ea89ffa206ccac6e8a7c7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH6712200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f8e91668e84eace4d8ff3b93c590b15e98763d6a759d9a33a68f34ef8e853f. 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/CH6712200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005a0f1cbcaeaf59af4c1b79ae5161b7623781612a54f026bbb8e19ba2919b86. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CH6712200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce3dceaa3c7f1268c41777370dd911efc00de5cff249615ee89e6b59572bbb6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH6712200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882575cd1dc233e3c9313dd0f60895ef22a1722b9db0e757e5cddb75ebcfd6c1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:50:48Z), 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/CH6712400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716dfb8dae0c92aa8d6996455738fe237f8ed4f7e89c9bb900f88d3d353b41c0. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/CH6712400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2665c5d3a13c41ad2799dc77fc14cca9b2f3dba578d9b62789a1a910ad0d407. 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/CH6712400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b2aa961a6d013ffb2d2449978ea42d6e11055b0e9279ba241468b582c4fdb2. 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/CH6712500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72441f90677526cabede6603a7638cab00be7ba9e5614266f7142b90a3903ae0. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/CH6712500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785c15ceb60ed6d9744921708e775b2c515b52a9554f4fd177d5ba39c2c7e228. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/CH6712500005.