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 0x5b9bcb3df83b67e9a26633a6054df99db5d3d3ca750597eda083509708850912. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91e0f453-2a56-4a24-b535-27ab1ca1ba36.json and https://artists.proofprofile.net/proofs/artist/91e0f453-2a56-4a24-b535-27ab1ca1ba36.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 0x63e1efad8c66e67395d1e25268b8a9bf0cce9eb64d3a1f68c76d55d29db30a73. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/AUGBT2409933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee208770dd7a6ab92d0681ca9df0211d34c911df73f3697293eeb0db0c8d8b6c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUGBT2409934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc66062e07204768a452bd44fb51a220bff28e98a7543210e1f410e601a46a96. 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/AUGBT2409936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6becc638b7f9a9c23e6df6efe83273f6bf447c0fa7073698f147b5d081423fda. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/AUGBT2409939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681fdbb746862de20f73d9d4bfb070a99c4f2f5afd2e22945c159cc18517f5a8. 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/AUGBT2409940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d5b0ce7177a6ebe93804bc0f9a3193f78c7b6608bbad8c9bb8a0ab87d99357. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:33:55Z), 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/AUGBT2409941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17844dd74a165cf16c0b0b8b24fd5481ce361f80835c7b59a126eda941ed9748. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUGBT2409942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299f68d80a00d976ab08cae7ccc006f2ce9a0e09a027c9999dde2d944b4332cf. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/AUGBT2409943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05eef7803d8721195c7398aed41aca350c9f85f9aa59a2ca24b280ba90223f26. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUGBT2409950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d23f03b69ec0acc472a240ba94abf8b976ebdb7a78f151c321e22df9df08e6e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUGBT2409953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7e78e27126e5c56cb732302b3864e3fca2584c65955471cd237da03b54a692. 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/AUGBT2409954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c9e63dd34c5a76ece6ecccca640ad5e567c771a774aa98a6d91a00e95ee283. 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/AUGBT2409955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18162907ac0817f736779f8aeb3c8cbb81bab99cc3fc00f7bd651ca269ec9b3b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:47:14Z), 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/AUGBT2409956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219461f2d2f855a5fbe4dd3d66e3d9d4e8e4e5b39e0ac9d6398b1a7ff7c1fdcd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUGBT2409958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f75a7ad57e54fb20cee4b8c943a77f286a038e774f8e5cbd23ad601f1ff75e9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUGBT2409960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407731d624081e3e3216c51e90009903ad9a41a02876dd03743ce5d3dc76f09d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUGBT2409963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eed0217312cafe28f52e0847f29c2e5c9296b6ecbd1ae738bf2981c696227bd. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUGBT2409964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87faf720a73458e1e7b644514a4cdf32b9448e78fc9bedab5489393f0d6eac2f. 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/AUGBT2409967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97371993f764cddab1c5f628d4b521465e09d404f8ef43aa199affee650b8e9. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUGBT2409969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae358ab8f7945e6f0647d77b48545ce1af6f5e155634dcbb7ef9a64b3258cfd. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/AUGBT2409970.