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 0x0835a3bdf83378815d95912e72f45c3f6783eaf2523809d24ccf3ee27f50fa4a. 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/4fa26c33-441d-4c44-9274-dbd2c14a1643.json and https://artists.proofprofile.net/proofs/artist/4fa26c33-441d-4c44-9274-dbd2c14a1643.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 0x9bc06af390622f03fe58dbc913b829251774cfeee2e3b4908bfb810a5b9504bc. 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/FRX452341762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dcbc2bf58d5a1234dfa27f46f1842851719240904f0d2d874284b549882dcc. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZFYX2008941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b9980b0e52d672473166bddae68aa30b38cfda1538a0c72bd8f7b8c54cbad2. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZMEQ2118028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4218f9fcb8eb718ddb7ca3912bcd7a13debd9f537df5b908f29445d8acf63f4d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZFZ52082928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca41f59fc224335e864aab85b516da0f50fb620747e5c828875812f0a1df3f09. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:55Z), 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/QZFZ52081903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee2385995f5ae0296b7b09168d27ce7955754142c4a09ca6d6d0e242afec7f8. 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/QZFZ52081904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f800071d764c2ee729cd6704aea7ae4eed3e410ec074e6d415157690f9d62b. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZK6M2064935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1186f54cb716d8454f1903701d9ebc5a0091882f07cedef04d45541c7b23c944. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZMEN2020506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d2f4726ef1fc8b97254743d2d12885821dcb3b24cb6cd444c41cb68cf598b0. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZNWZ2135661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526efc25539e82ab293f3d85dfccb15f0b49eb1dc7a8873524d70c8cb0eab6c5. 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/QZFZ52082937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d44b939c8aacad9c26e19462c5935902520e00705cb4bc839034571f342dd41. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:02:18Z), 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/QZNWZ2135759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5286b27ec738ab7e58b681014b151a5cc95942a95016571d41c78de71d94b1ec. 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/QZDA62288818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b77454792e000e659d5365477daccf5efe695f7e10b2bc21216ee2c19428e60. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZMEP2256250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd062fc7bc562a07cf26549357ac5635aea08ea4b7284654b8fcb4a2de50b89b4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:57:21Z), 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/QZNWZ2294647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9e9e12652c32745e1fef92db4c819cd5b6f764d54f82c9a5865f3d8dc33918. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZTAX2268687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4850cd1f7dbd87164d16e82f2a145eba05874b65169e4aad90e03bbf9cffc690. 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/DGA092217300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96aeb18697609da4682ed16de22c4b739edbb2b8cf8f12a5a51be51db04cafd1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FRX282326283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc53acc10fd92c2e3303f165273097dbd59238128ac74e1fcece88cd300949c8. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/FRX282361915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec454223281d211b7be269e1a9beed093e67a80a2f143ec4324eaf2c12b7aa3d. 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/FR10S2577006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f887b10cf18de4907493d4b1377be0eb9273617b61f7086acc79637a72b8d2. 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/FRX762544644.
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