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 0x88327d582ed78472720cb24b6b368ac7f19ea02bd6c6f9c7a7a8eb79b4bc3ee1. 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/069498ed-d841-4596-851d-ab5ed69a9582.json and https://artists.proofprofile.net/proofs/artist/069498ed-d841-4596-851d-ab5ed69a9582.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 0xb06e7d0f8365bbf6f56dd29556a8e8257824f267df3edc14f6f304844518e688. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTB32367456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9201f25b938d3056fb5f0a57cc55b1adf42de764afbf8412fba83e07776feda. 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/QZTBC2388277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165574abbefb26972e69ec4796fea28877cf50e7202bd023a3acf1b36740b940. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR10S2476962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a315e46aafaeb8147bddd133be2b861ed570f8276387e3ae3bd588c564ddc83. 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/GBWUL2415353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06e7d0f8365bbf6f56dd29556a8e8257824f267df3edc14f6f304844518e688. 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/QZTB32367456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0373c7584131885b0d125d0ac35be4c19f58651625024cb5ea88d39fb7f103b9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX202403282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c21d845971a1af22b3d76ddcbe3d327b4d7610422b8babe19425afdc0a3860. 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/GBWUL2499590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20efde9e77379a4428f315fda2581fdd9873c6cd2328ebc81baaeed1a56dbdbb. 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/QZZ8A2451869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4361e4a75aaaedd85ef34a941bee1281bda68c021729c0c0ef82214e4f1744. 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/QZZ8A2462533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7873ed945f8331c47e27a60e6cdaa0e56cbc06e68fd8230271b7124f687ac2. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZZ8A2462534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3223aca1cced54f6f84c541c9ef9dae858e79cddb0b33be76203eca7a911c8f9. 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/GX38U2596140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13dd7c2c95208eab1217396917e346941a81a95910f4025eb1cb4dc7876b867. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GX38U2533432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe484486e2d28f3fcf4ab0913014440fb33f72ecf62afd5bd2e5459e4c03af0f2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX5MX2390452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ef2da4f88f107a12110cfa5821d59e60fa104b77d19c465fecebb9d3b5d7e1. 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/USLZJ2471283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84cdc48b252bac4df72080d9be3c58608213fc125d57ee82d24aece1906fabc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN72440863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495780833114190e0748a023118f21652e3450e3d517684378ce19028cb18b2e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWFN2385300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415ba7a499f470cfcaa55d3329d71a9b6dc824b36336b6ca3a4d60dc7db4ac7a. 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/QZWV32326894.