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 0x3eea9a734cec186491e415e86d699fd8c32728fb9f1877a6155d8ee473a2d4fb. 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/05ba4faf-8586-460a-990d-1df0d817489c.json and https://artists.proofprofile.net/proofs/artist/05ba4faf-8586-460a-990d-1df0d817489c.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 0xc4d7c9ea30e665f707ffa07da460c5fb10111470912bb9c6ddbe235f4fdef5f8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEW872203354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232efb7c0f78ed57f3c533033fbc9ac186cef7ee569acb9b6a6643869d27b33f. 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/DEW872108273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d90ad43d22fddaf08dc462e9ad9e31f6c0f59daf4790e3f7de9062cc79839c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEW872108274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac02df3c7170764efb11339aedbe476075ab0ff4467684b8812b4cfd98cc62d4. 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/DEW872107819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22662b8bad48399c15c61b82cfe322fbdee6b0f7916ac45dd5f7f4ca65b8bd6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH3132217074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91e63cb6ca2b209c6fdbbc2873015434e8485f95254825eb5ae7ed43281ffce. 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/GBCPZ2423237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11317140b085eddbd2afa672d654478d202506550bde447636b1c8267f8fa21e. 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/GBEWA2401740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa879118cf3cb1940d307eaa9c0187cce08bbb780ab98518110d7b939a4b16aec. 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/GBEWA2401741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed995861d81c792e03cd129d38e440e0555c35955eed46ef8a2ddd25680dead. 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/GBEWA2401742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c8245b37abda83c934b833730b0356e54070565277f0d0d8b29e0b3e5e20c7. 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/GRPA12400229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927151b85b292ddb5ef59f527dd0c439eae0fe5ef17c27306eed338ecd7000da. 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/GRPA12400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea8f0a5447b78ba012d05f9b98ed9c37738076e5c8241f0909bf833ccb5edee. 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/DGA0L2317009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06751d6511abd7b86d29dfc0487d9977d6f892aca1d72bdfc4cf4c05fead3bb0. 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/US39N2305257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9624deeeddf7848026f2b3fbf8ed2aed75e0704823552edcbe0beb64245dab. 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/DEU672201153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace7618f0ed359e188eb7a4c177c6e7b5221fb386b0efa41f790bee7c71cd9df. 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/DEU672201154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50ded367a3260c37b64a2871f3077f0624b8836c20d566335377f62508860f8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEU672201155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ec63ddd18af1a80d4c5709f05868a4444ff6e53c08196fd67e2448656317a9. 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/GBEWA2102780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1667969c9c88c4b410a873ba2e1c3ef53edb17918c7e2c4ad4fcd4bf2310ed10. 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/GBEWA2102781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ca7dbb07dda270600475604dc7e568df290f3f20d28a7f5d3b68e9264b7857. 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/DEW872205068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11718639d70d12fd16c2bed844d09b9e5be9d3466009490ad9b7716fd0c9d51. 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/GBEWA2100375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d7c9ea30e665f707ffa07da460c5fb10111470912bb9c6ddbe235f4fdef5f8. 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/DEW872203354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac02df3c7170764efb11339aedbe476075ab0ff4467684b8812b4cfd98cc62d4. 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/DEW872107819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232efb7c0f78ed57f3c533033fbc9ac186cef7ee569acb9b6a6643869d27b33f. 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/DEW872108273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c4222bd1a57dde39674622a3ff9c48469258c84fe3aa8ebff34f83306dbb3f. 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/NLF712301707.