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 0x4564036b8a4a9d3a916d19d33391027d5e1eed1ae65ec1ed7a09e1274a74a1bd. 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/587a09db-0ade-4a4a-b674-4a8e2d97ddf5.json and https://artists.proofprofile.net/proofs/artist/587a09db-0ade-4a4a-b674-4a8e2d97ddf5.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 0x572fccba6d1508cbc509d7e391c61957d6dab6d062544f68e1ac8c5f4ae56618. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARHXW2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e1ea2121494a723d07b92ceb7da1f95177d6eabb09be07ce85a477e7702988. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/ARHXW2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cca021a0058e877d2f29f7f257e169578b8cf09749eb9a2264ee8acb23907c. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USDY41958899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693fe6a3192c7bc1c47d5fc406c3b92e029adfc12d5d1114805e650cb841baf9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USDY41958900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d68f6c9ab2b5baf9a73a84dcd4afb1a9231f28dfcb65b77f031e817e7bead7c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDY41958907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bea829b21db1ca11a5772f12513724b334db5abb0b37a0d5705c611c68505f9. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:35Z), 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/USDY41958908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30143ec9f5709e19913ff3638b9261f8887ddebb5e888a4c71c14bc942f19f17. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USDY41956683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d262c3ea54fa7168205f3d6302b09b11859c9de29095042783eda06e825a55b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:40:52Z), 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/USDY41956685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f011b285ccbaf8e710056e461a9086b93cc831652a40504160cd49e4fc65031. 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/USDY41956687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4522f5c0802d7c66f567707b81b268b0c5adbb03f8515032c60c02db5a0e51e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USDY41956688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13996e8dce1df319050d13ce7561f21997be353143922143c43a200f1d3133c9. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USDY41956690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71cc948ad982e88f704e81508b73fef49ab4ab518316453f26289c1d11d090f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:03:47Z), 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/USDY41956692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a6dca34b248a34390d1c4ca0b41d65f506e9c99c80db209594db3b1ec19265. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USDY41941127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d42afcd5712279270fdce219b4fc48c196323f9c599f12d97a7bdf5d19613a. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/USDY41941128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd1874b4d82df5e8b1096f9365103ff1826fce1803a690a5c798cfe2d2ae7c8. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USDY41941132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759f84e7fd36b91c60763d3307a1806cce18357b475349af1ac8ad262d5e2488. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/USDY41941134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44deffa94796e49488417c78227379b3e625d9eafa6d343f57d7e8b2b01c99d. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:49:58Z), 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/USDY41941136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600be4819056fbeab7c189520bf11673d95d3bed42fb7a5a60af38a5de4d2933. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USDY41941138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e941b904205e1e906dede7185e781096672c5502e998aee75291ff423008399. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USDY41956660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e9ba674a08ac0c1506aa41ed9d8977af35d18cc3eb4f13bbfbfec30dc47963. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:37Z), 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/USDY41956663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe990fa54616b1e86084fe16337bd90ed6383a48046a3df95ac5c7e7e38b0a603. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USDY41956664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465751b1abac17c36fbe465cda5ab998d4eec58c4b0ba709e1368ce318c757e7. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USDY41956665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8e83341a542e8d60c625273705f7edf6e9d64574ebe0f8cf4625b1dbcc8624. 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/USDY41956666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa080617bba6f95c2fb79db097207eda25d7c4337232fa5167ba83821d7b1c49. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:05:22Z), 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/USDY41956668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dd8507b498970f9abcfdb9d1f861c1a5b2956afd637bbd3207f3754ad762b2. 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/USDY41956669.