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 0xf6522bbb6ef467f9790b5dbe702a2aa8b023d8ef9647ee9de2e4984540a6ce7c. 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/153e375b-1b72-4ac2-8284-8402685798f6.json and https://artists.proofprofile.net/proofs/artist/153e375b-1b72-4ac2-8284-8402685798f6.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 0x5537f18f05e4eae990fb121a6b73acf3c5a6a80c4c7f1b0437aab3284dd4d7eb. 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/GBSMU6067088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864341c787cebbb31645131ba6eb076171a93b135f39b80395f4afc4babb4bd6. 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/GBSMU6067091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cde8a6bb1532d5f6a67371db0657e6f62f67ac1cc674fd0b33e94458ca99a8. 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/GBSMU6067094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2147a5ebdfbfba2899a36e59dd4b869a568b72d0868bda1546c5994209ff2e. 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/GBSMU6067095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3342afd11a5a4237b95705b0716b805c2e03bf6fbf91c47ca390dfceba31511. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GX38U2121940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa441c5cfabbf4273306a31f7470cf906efce883decbe1e0b9932e1aeb75fc662. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX38U2121943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76ed3b96156a01c6125b0c5c3755f46d940f9802c80b12d1a550838fa68166f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:04:16Z), 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/GX38U2121944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0924c3d9cc7e505caeb43e8a38f5702f5de8bdca16d10ace23b802269568ae50. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:33Z), 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/GX38U2121945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8762c7ace7226156ccfb37b38f07c902eb50f7068dfc2bdb02528b9ed883cae. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:18:46Z), 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/GX38U2121948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2d5d91a48c4dea36464df26245e1bb081e3a43c001e11e13b8aa0647bd3cf3. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GX4R52289856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a81582f24f3915fe8980281697bb78e975fd37e79deb3e22b96043a4bafabc9. 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/GX5MY2328527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f6997e0cc1cadf2a8acc426f90f3926ea60169c8a73d9cc7b989bfda8d587e. 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/ART0G1802300.