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 0x5c8ac5af4828a1620b51ec5d1bc583454814e989e3ae52f3a09d7a0d08f29e75. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/850eb7f7-1529-4acc-ba0d-fbb15ee8359c.json and https://artists.proofprofile.net/proofs/artist/850eb7f7-1529-4acc-ba0d-fbb15ee8359c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Top Cips + Total Extension + Vertical Green
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 0xb1ef3e39126b3a183a74c86404c5ba875abbbc09cba2e13cc9fbe5c93b4fddf5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AUXN22181451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae32ddb005ef6d27195faf055d86046a889c3c05135340d9b1d14ae9ee40b20f. 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/AUXN22181454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785ef284509e0e124fdacf26201a3b3baf20a2010cf30e30c581b6b05eea2071. 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/AUXN22181458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3fbfa9086cd23dede595be0c2c742c672e39c4c3c1aabf0a377f429af6dcbc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AUXN22181460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc1f18241eabc120004399e5260982ae168937cc90a1040d72d3c1db31cf169. 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/AUXN22181463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dded16b51bd1d27092d8867708a0ec64acd61fe13384504977c26947724b3e9. 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/AUXN22181617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0109694a430d214a5e90b79ffd2f811cafb0568236c5014f0fcef03e809e66e0. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:22:14Z), 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/AUXN22181618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af1bfbce99e526ad618a6c247ab6c31cf83d1154de1892e4d1914c8b7a963a7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AUXN22181620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9497a7a982e5a04f8f1946c05242b225c7fb9c38d97cde81e27d457df87852a. 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/AUXN22181624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66763966cee07a070633e94c0106aab060a428d1bd25e7655e9c58a218ce0f1c. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:31:55Z), 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/AUXN22181628.
Brown / Power Ranck / Selection TR / Trophy