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 0x30cdedf8c0baa1e69b202301eba460319c6ed7a4027dad51bc3562cd014929ac. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/940ad162-ab8f-478a-b24f-a0f6096731d6.json and https://artists.proofprofile.net/proofs/artist/940ad162-ab8f-478a-b24f-a0f6096731d6.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 0xbb7f8938eef1919bb524d2c4d4017a4e6aad67d4eead09aabe9222985a6366db. 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/AR2642100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dedb29f3765e8327955e3958ccfd0c8052e546a3268b6f8a121368b0e977422. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AR2642100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a08fb18103fc83f34f0cae6c0f720a454aa5433b103acdad274a7d85bd59c5. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/AR2642100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268e195ce359f6784ba79701f752c01cbffaa0bfa3fa9bef81371b0b383cd4d4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ARE401700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f933f3422f3e29b6d2f9d5ae6db1d2e56c5d872aa1c26ef6ba2dca66eafc7fd. 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/ARE401700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9977d30edccbd4e0c25c6dec738287f8f4ab56f16bab42c34e1ce337ba06c2. 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/ARE401700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef640506369a499f240fc41c5885385bfca4a434027be8ef00dc7bed9724726. 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/ARE401700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6238ba5baa62dc2a7e9f9fc78e311456de1730c5574a26e0c23421edaf7d9d. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/ARE401700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46561840eb1cdbaa9724845af54a8e76d15a7715074eb8850fd4f1dfc7352c98. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/ARE401700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd93361eff1f93fb332da664a2637cfc4addf9c7eb2b95aa84bc88f0ddeef75f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AR2642100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06cc606df9864dcd001d5f0f51bd562fdedf7b791e959bedfb1d9310f86d933. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/AR2642100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5cb6fc38c06025c688fad03841517bdb604f76e7816c0de5ccb8ff6480a670. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/AR2642100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac025b5c2ff9f50c0055de44cf819813d594033315b9dfa8c8218219e9a651b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/AR2642100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a501e29e1bd16b70a897d4f67813488c5a2f89b5556a1bf93c011fe50f11b40. 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/AR2642100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0e90bd63bb38e1606e8c7edc9a0ba0d300e6e1dcdfc662edc9d23ce272670c. 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/US83Z2216109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c67da7cdfd9fb561155dafeae70389befeddaf171b7fd7898f3f4843d04933. 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/US83Z2216110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65282d2717318f4a3a1e61bc15c15f5126b902f03a48201b4d9aa44ceb64ac8. 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/US83Z2216111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4297629ea39ce8433210d11d1c9e84e036e9c257a738a3a80ea0f7a21792c94. 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/AR8TN2200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916dcae209388e7e8a7a3c99d62e60986ea703466bd49e32194298106bda271f. 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/ARE401700002.