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 0xbf0dbfc321552663ab84c8cb6f1866568419651c16f18b0092cd45d1b4afc9b3. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27e97b6c-b1aa-461f-9359-4c351a60b036.json and https://artists.proofprofile.net/proofs/artist/27e97b6c-b1aa-461f-9359-4c351a60b036.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 0x7c3fc5afec03656ee9b1cb983bec5e1788af5906dbbe1a5424b4444b4d9bf65b. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/UKXN22484879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc86bca5e6c9e5fe4da1d42ba869e18048c6f3eb85e361ea8a95a973cb14dcfe. 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/UKXN22484880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a43ea9dfdc996280c7b472dc502da1306364ae424e391b1df7a301770f14a1. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/UKXN22484881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa425ba61eb452879f0737c952e64292aa10c72376488a2b527ba7c6f3c5b4df3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:58:06Z), 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/UKXN22484885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e081f4024e7669bfa355dbe733c5af9fedb5d90a87dc3ae013dacc85c8b3af8. 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/UKXN22484886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c4c33534779775cc2aaaf827e1ecdb099d65c5434918eae17e7546cf366db9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA22447244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b0375ef7f27c1fa2cb6ffe384926b1e72048525ad0af09c0d6626ea73b8fc8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBMA22447246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5cc13b3dcd20207a6f881b9d9ee9679bb371b221e9c7e8509fff05ea02e63c. 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/GBMA22447247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0a3bdd32bfd5293f955564ba99594d0f786240a756819349e4d1130e806a12. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBMA22447250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4b430ec058ef70130caa873fc37a13c6999566ace644d8a6c3ecab9c57d466. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GXF9Q2440013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2abd2f87b233cedefb6c1fb2e60136e88dbcd96af5af15797d9bc20c84c0035. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/GXF9Q2440014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbdde177f0015f6dd005dc96f7901b0c798d06b74bfe1bc2a9489d0f8225d1b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:35:52Z), 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/GXF9Q2440015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba745d1d5d90b335dc222d4cb6c4b5e61f323bea6855c3b2d1605cf3a50e2c7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:02:02Z), 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/GXF9Q2440016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb07fbefac93558b162de3df217fe08acf57a4d348f2bdabc2f005b6fb371c4. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:50:42Z), 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/GXF9Q2440018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcbf6bc114a61e144315154b7387f56ed7addb69a64eda65bc30cfe370945e7. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GXF9Q2440019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc122d3e37c91b92e969a465d9785cf7a19724f9919cb0a8d453095bb0b2daea6. 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/UKXN22585766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b25ba4aec9cde3e5ce3b8764f20f0ad98ed43cf33c3c83c9b6a2f4723f6032. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/UKXN22585767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c47730e23a4a5121aa4aed93c0b05cd9a9f34b05cc3620414beb3301fb1c07. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKXN22585768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf467f60d7432472006732e018e7ceeba3e12e9a95f9300fae2bd5b8886e293c5. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/UKXN22585769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac23677451df7b07b4236098979fc20b658306f24488e37c683d19e347160237. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKXN22585770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea48a1fec9ea2f98d90ffc225456c906a1de166c196a325c0547c4f90c1f2fe4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/UKXN22585771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0067412ae0f0ea152044ce90c79d43f4272d7245d0fb81c440e5e540384a8900. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/UKXN22585772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85148d12d5d672af31bc264deed89f5f95bfedfdeb4f3f0fbdf2c13dc251b637. 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/UKXN22585773.